50 results on '"Industrial experiment"'
Search Results
2. Determining Optimal Electrical Discharge Machining Modes for the Disc Tab Grooves of Small-Size By-Passengine
- Author
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Petrochenko, Sergei, Ablyalimov, Oleg, Kodirov, Nozimjon, Rakhmaev, Rakhimzhan, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, and Guda, Alexander, editor
- Published
- 2023
- Full Text
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3. 三山岛金矿深部高应力节理化巷道围岩控制技术研究.
- Author
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赵兴东, 朱乾坤, and 曾 楠
- Subjects
- *
MINING engineering , *TUNNELS , *ROCK bolts , *MINES & mineral resources , *ROCK testing , *ROCK mechanics , *TUNNEL ventilation - Abstract
With the depletion of shallow mineral resources, deep mining has become an important part of the mining industry. One of the key characteristics of deep mining is the dramatic deterioration of geological conditions in mining engineering under the influence of "three highs and one disturbance". The surrounding rock exhibits significant jointing, which brings great challenges to the control of deep tunneling. Taking the typical jointed tunnels below-900 m level in Sanshandao Gold Mine as the engineering background, this study conducted engineering geological investigations, literature surveys, and laboratory rock mechanics tests to obtain basic data. The Dips software was used for structural plane grouping, and the Unwedge software was employed for wedge analysis and stability assessment. The Rock Mass Rating(RMR), Q, and Geological Strength Index(GSI) methods were used to classify the rock mass and estimate its mechanical parameters. The mechanism of discontinuous face reinforcement with rock bolts was elaborated, and the required support pressure for tunnel support was estimated. Based on the Q and RMR support charts, a support scheme was designed, and its effectiveness was validated using RS2 numerical modeling. Industrial experiments were conducted at the-960 m level, and the results demonstrated that the designed support scheme effectively controlled the deformation and failure of deep high-stress jointed surrounding rock in tunnels, providing a basis for safe and efficient mining in deep mines. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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- View/download PDF
4. Exploration of Large-Scale Application of Efficient and Clean Utilization of Low-Grade Bauxite.
- Author
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Chen, Yang, Long, Fei, Cao, Xuejiao, Li, Yibing, Zhang, Weiguang, Zhang, Tingan, and Lv, Guozhi
- Subjects
- *
BAUXITE , *ALUMINUM industry , *ENVIRONMENTAL protection , *SUSTAINABLE development , *CARBONIZATION , *ALUMINUM oxide - Abstract
In recent years, the rapid development of the domestic alumina industry has greatly accelerated the consumption of high-alumina–silica-ratio bauxite resources in China. The development of an efficient and clean utilization technology applicable to low-grade bauxite in China is not only a requirement for resource and environmental protection, but also a powerful guarantee to maintain the sustainable development of China's aluminum industry. Based on this, the authors' team proposed a new process for the treatment of low-grade bauxite ore via a calcification–carbonization method from the perspective of equilibrium solid-phase reconstruction and achieved the first industrial-scale trial run on the basis of existing laboratory research. The results show that the mass fraction of Na2O in bauxite residue can be reduced to 0.95% in the treatment of typical diaspore bauxite, the A/S in the bauxite residue can be reduced to 0.85 after two-time carbonization–alumina dissolution, and the actual alumina dissolution rate can reach 81.32%. The relevant results verified the feasibility and advantages of the calcification–carbonization method in industrial production. [ABSTRACT FROM AUTHOR]
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- 2023
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5. Industrial Experimental and Numerical Simulation Study on the Combustion and NOx Formation Characteristics in a 600MWe Utility Boiler with a Novel Swirl Burner Burning Bituminous Coal
- Author
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Shen, Tao, Li, Zhengqi, Lu, Pisi, Yu, Qiang, Song, Xin, guan, Jingyu, Förstner, Ulrich, Series Editor, Rulkens, Wim H., Series Editor, Salomons, Wim, Series Editor, Lyu, Junfu, editor, and Li, Shuiqing, editor
- Published
- 2022
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6. Evaluation of a new three-phase fluidised bed flotation column for industrial experiment study.
- Author
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Han, Ning, Li, Yifei, Zhang, Zhiyuan, Han, Jikang, Chen, Peng, and Li, Yanfeng
- Subjects
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ENERGY consumption , *FLOTATION , *COAL , *VELOCITY , *STEEL - Abstract
Three-phase fluidized bed flotation column (TFC) is a new type of separation flotation method with high efficiency and low energy consumption. In this paper, the industrial experimental effect of TFC is investigated. The influence of operating parameters on the flotation separation effect was investigated by adjusting the operating parameters such as gas velocity, liquid velocity, and bed height. In addition, when the sampling depth and sampling radius are increased, the ash content in the selection zone increases with it. The relationship between the amount of mid-coal circulation and the ash content was also investigated. The ash content of refined coal gradually decreased from 10.28 % to 9.28 % when the amount of middle coal circulating was increased from 0 % to 50 % of the feed. This study explores the separation effect of TFC from industrial experiment perspective, which lays a good foundation for future industrial-scale applications. [Display omitted] • Industrial experiments were carried out on three-phase flotation columns. • The effect of operating parameters on the flotation effect was studied. • Fine coal ash increases with sampling depth and sampling radius. • Fine coal ash decreases with increasing central coal cycle volume. • Lays a good foundation for industrialized large-scale applications. [ABSTRACT FROM AUTHOR]
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- 2025
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7. Evolution behaviour and modification mechanism of inclusions in NM500 wear-resistant steel with calcium treatment.
- Author
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Sun, Han and Yang, Jian
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CALCIUM , *MANGANOUS sulfide - Abstract
In this article, the industrial experiments of calcium treatment on the modification of inclusions in NM500 wear-resistant steel were carried out. There are four types of inclusions, which are Type A of Al2O3 based inclusions, Type C of inclusions containing CaO without S, Type S of inclusions containing S, and Type M of MnS. Three types of CaO·MgO·Al2O3 inclusions after calcium treatment are embedded MgO·Al2O3 + CaO·Al2O3, wrapped MgO·Al2O3 + CaO·Al2O3 and combined CaO·MgO·Al2O3 + MgO. There are four types of CaO·MgO·Al2O3·CaS inclusions of multilayer MgO·Al2O3 + CaO·MgO·Al2O3 + CaS, embedded MgO·Al2O3 + CaO·Al2O3 + CaS, wrapped CaO·MgO·Al2O3 + CaS and composite MgO·Al2O3 + CaO·Al2O3 + CaS·CaO·Al2O3 in the steel after calcium treatment. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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8. EXPERIMENTAL STUDY OF THE QUALITY OF ORE CRUSHING FOR UNDERGROUND LEACHING
- Author
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Vladimir I. Golik, Yuri I. Razorenov, Vitaly I. Komashchenko, and Olga G. Burdzieva
- Subjects
industrial experiment ,deposit ,ore ,metal ,blasting ,crushing ,leaching ,extraction ,component distribution ,lump size ,content ,model ,Engineering geology. Rock mechanics. Soil mechanics. Underground construction ,TA703-712 - Abstract
The relevance of the study is caused by the need to find new ways to increase the production of metals. The volumes of substandard ores in terms of metal content of new and under construction man-made deposits can be involved in production with increase in the wastelessness of subsoil development. The aim of the research is to improve the quality of explosive crushing of ores for underground leaching of metals by experimentally substantiating the parameters of separation from the massif and crushing of metal ores. Object: ore-bearing massif and technological processes of breaking and crushing of ores of a particular deposit during a full-scale experiment in a pilot block. Methodology: critical analysis of the theory and practice of breaking and crushing ores for leaching in the store, organization of monitoring of the leached massif during the extraction of metals, modeling and interpretation of research results. Results. The paper introduces a brief reference on the history of the issue and describes the technique of carrying out an industrial experiment at a deposit of exposed ores. The authors have systematized the indicators of explosive breaking of ores in their shoring and proposed a criterion of ore crushing by explosion. The mathematical processing of the results of ore blasting was carried out. It was shown that the leaching method, even with a recovery factor of 70 %, does not compete with traditional technologies due to the loss of a useful component and requires improvement. The regularities of useful component distribution in the classes of chipped ore, described by the logarithmic-normal Gauss law, were established. It is shown that the size of the piece, which corresponds to the arithmetic mean of the content of the useful component, objectively characterizes the quality of the ore chipped for underground leaching. The difference between the proposed method and the traditional calculation of the weighted average linear size, which does not take into account the uneven distribution of metal between fractions, is formulated. The authors proposed the generalized model of explosive preparation of ores for leaching. The study of the useful component content distribution in the chipped ore, depending on the material composition, the nature of mineralization, the total metal content in the ore-bearing rocks, the technology of ore preparation can have a significant impact on the leaching indicators.
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- 2021
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9. 细粒级尾砂高浓度胶结充填试验研究与工业应用.
- Author
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盛宇航, 李广波, and 沈自军
- Abstract
Copyright of Nonferrous Metals (Mining Section) is the property of Beijing Research Institute of Mining & Metallurgy Technology Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2021
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10. 基于未确知测度理论的高海拔地区矿体 采矿方法优选研究.
- Author
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廖九波
- Abstract
Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
- Full Text
- View/download PDF
11. Industrial investigation of decarburization and desulphurization behaviour of 120 t new single snorkel degasser.
- Author
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Shen, Chang, Liping, Wu, Junbo, Guo, Yuanwang, Pan, and Fei, He
- Subjects
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DESULFURIZATION , *OIL well gas lift , *SKIN diving , *SLAG , *METAL refining , *BEHAVIOR , *FLUORITE - Abstract
New single snorkel degasser (NSSD) has been developed for vacuum refining of high-efficiency decarburization and desulphurization. Lifting gas modes of the NSSD have three modes: ladle bottom blowing, immersion tube's side blowing and side-bottom combined blowing. The side blowing is composed of equidistant argon-blowing pipes arranged on immersion tube, which can freely control ladle top slag behaviour. Then, effect of different lifting gas modes and process parameters on decarburization and desulphurization behaviour is investigated by industrial experiments. Results show that: ① compared with other lifting gas modes, side-bottom combined blowing mode under asymmetrical blowing with larger flow rate difference on immersion tube can not only achieve higher decarburization rate, but also does not need discharge slag before vacuum treatment. ② The NSSD can not only obtain high desulphurization degree of above 80% by slag-steel reaction and side-bottom combined blowing mode under symmetrical blowing on immersion tube, but also avoid unfavorable fluorite desulphurizer. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
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12. Airflow and Combustion Characteristics and NO x Formation of the Low-Volatile Coal-Fired Utility Boiler at Different Loads
- Author
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Li, Song, Chen, Zhichao, Jiang, Bingkun, Liu, Guangkui, Li, Zhengqi, Zhang, Xiqian, Zhu, Qunyi, Yue, Guangxi, editor, and Li, Shuiqing, editor
- Published
- 2016
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13. BGRIMM 浮选机放大方法与技术.
- Author
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张明, 沈政昌, 樊学赛, 史帅星, and 杨义红
- Abstract
Copyright of Nonferrous Metals (Mineral Processing Section) is the property of Beijing Research Institute of Mining & Metallurgy Technology Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
- Full Text
- View/download PDF
14. Effects of Negative Testing on TDD: An Industrial Experiment
- Author
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Causevic, Adnan, Shukla, Rakesh, Punnekkat, Sasikumar, Sundmark, Daniel, van der Aalst, Wil, editor, Mylopoulos, John, editor, Rosemann, Michael, editor, Shaw, Michael J., editor, Szyperski, Clemens, editor, Baumeister, Hubert, editor, and Weber, Barbara, editor
- Published
- 2013
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15. Walsh Matrices in the Design of Industrial Experiments
- Author
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Moraga, Claudio, Allende, Héctor, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Moreno-Díaz, Roberto, editor, Pichler, Franz, editor, and Quesada-Arencibia, Alexis, editor
- Published
- 2009
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- View/download PDF
16. Technological Process Innovation via Engineering and Statistical Knowledge Integration
- Author
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Palumbo, Biagio, De Chiara, Gaetano, Marrone, Roberto, and Erto, Pasquale, editor
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- 2009
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17. The influence of steel preheating level in the tundish on the primary structure of a continuously cast ingot
- Author
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J. Pieprzyca, T. Merder, M. Warzecha, and J. Skorupa
- Subjects
tundish ,continuous casting ,liquid steel ,mold ,industrial experiment ,Mining engineering. Metallurgy ,TN1-997 - Abstract
The article presents the results of industrial measurements carried out on continuous casting machine during its normal working operation. The aim of the research was to determine the influence of steel preheating level on the size of particular crystallization areas of ingot primary structure.
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- 2015
18. Heat Transfer Characteristics of Heat Exchangers for Waste Heat Recovery from a Billet Casting Process
- Author
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Ju O Kang and Sung Chul Kim
- Subjects
waste heat recovery ,cylindrical shape heat source ,thermoelectric generator ,radiative heat exchanger ,numerical analysis ,industrial experiment ,Technology - Abstract
The application of the thermoelectric generator (TEG) system to various industrial facilities has been explored to reduce greenhouse gas emissions and improve the efficiency of such industrial facilities. In this study, numerical analysis was conducted according to the types and geometry of heat exchangers and manufacture process conditions to recover waste heat from a billet casting process using the TEG system. The total heat absorption increased by up to 10.0% depending on the geometry of the heat exchanger. Under natural convection conditions, the total heat absorption increased by up to 45.5%. As the minimum temperature increased, the effective area increased by five times. When a copper heat exchanger of direct conduction type was used, the difference between the maximum and minimum temperatures was significantly reduced compared to when a stainless steel heat exchanger was used. This confirmed that the copper heat exchanger is more favorable for securing a uniform heat exchanger temperature. A prototype TEG system, including a thermosyphon heat exchanger, was installed and a maximum power of 8.0 W and power density of 740 W/m2 was achieved at a hot side temperature of 130 °C. The results suggest the possibility of recovering waste heat from billet casting processes.
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- 2019
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19. 链条炉分区段烟气再循环对锅炉运行及 NOx 排放特性影响的工业试验.
- Author
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栾积毅, 高建民, 武雪梅, and 邵东伟
- Abstract
Copyright of Journal of Engineering for Thermal Energy & Power / Reneng Dongli Gongcheng is the property of Journal of Engineering for Thermal Energy & Power and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2017
- Full Text
- View/download PDF
20. К вопросу создания автоматизированной системы теплотехнического исследования печей для нагрева массивного металла
- Subjects
НАГРЕВ МЕТАЛЛА ,AUTOMATED SYSTEM OF THERMAL ENGINEERING RESEARCH ,ПРОМЫШЛЕННЫЙ ЭКСПЕРИМЕНТ ,CHAMBER FURNACES ,АВТОМАТИЗИРОВАННАЯ СИСТЕМА ТЕПЛОТЕХНИЧЕСКОГО ИССЛЕДОВАНИЯ ,CONTINUOUS FURNACES ,ПРОХОДНЫЕ ПЕЧИ ,КАМЕРНЫЕ ПЕЧИ ,INDUSTRIAL EXPERIMENT ,HEATING OF METAL - Abstract
Рассмотрен вопрос создания автоматизированной системы теплотехнического исследования печей для нагрева массивного металла. Нагревательные печи станов горячей прокатки являются главным технологическим оборудованием, через них проходит практически вся выплавляемая сталь в мире. Их функционирование определяет качество металла и энергоэффективность производства горячекатаного металла, в первую очередь, листовой продукции. При этом данные печи представляют собой достаточно сложную техническую систему. Основу состояния печного агрегата определяет температура. Установленные штатные средства измерения контролируют температуру продуктов сгорания в зоне, температуру подогрева воздуха и топлива, температуру продуктов сгорания перед рекуператором и др. Температура поверхности металла, а тем более, внутри нагреваемых слябов, в печи не контролируется. В статье представлены основные признаки и характеристики элементов, составляющих измерительную систему в нагревательных проходных и камерных печах. Рассмотрены задачи, структурная схема и стадии создания автоматизированной системы теплотехнического исследования печей, которая позволит добиться необходимого и адекватного управления процессами, происходящими в агрегате. The issue of creating an automated system for thermotechnical research of furnaces for heating massive metal is considered. Heating furnaces of hot rolling mills are the main technological equipment, they pass through almost all the steel produced in the world. Their functioning determines the quality of the metal and the energy efficiency of the production of hot-rolled metal, primarily sheet products. At the same time, these furnaces are a rather complex technical system. The basis of the state of the furnace unit is determined by temperature. The installed regular measuring instruments control the temperature of the combustion products in the zone, the temperature of air and fuel heating, the temperature of the combustion products in front of the recuperator, etc. The temperature of the metal surface, and even more so, inside the heated slabs, is not controlled in the furnace. The article presents the main features and characteristics of the elements that make up the measuring system in heating continuous and chamber furnaces. The tasks, block diagram and stages of creating an automated system for the thermal engineering study of furnaces are considered, which will make it possible to achieve the necessary and adequate control of the processes occurring in the unit.
- Published
- 2022
21. К вопросу о математическом моделировании нагрева металла в печах с шагающими балками
- Subjects
ANALYTICAL MODEL ,НАГРЕВ МЕТАЛЛА ,СТАТИСТИЧЕСКАЯ МОДЕЛЬ ,ПРОМЫШЛЕННЫЙ ЭКСПЕРИМЕНТ ,STATISTICAL MODEL ,ПЕЧЬ С ШАГАЮЩИМИ БАЛКАМИ ,WALKING BEAM FURNACE ,МАТЕМАТИЧЕСКАЯ МОДЕЛЬ ,АНАЛИТИЧЕСКАЯ МОДЕЛЬ ,MATHEMATICAL MODEL ,METAL HEATING ,INDUSTRIAL EXPERIMENT - Abstract
В статье рассмотрен метод совершенствования тепловой работы нагревательных печей с шагающими балками станов горячей прокатки на базе статистического моделирования. Используя результаты, полученные в ходе проведения автоматизированных направленных теплотехнологических промышленных экспериментов на проходных нагревательных печах широкополосных листовых станов горячей прокатки российских металлургических предприятий, разработана статистическая модель, связывающая температуру верха, середины и низа сляба в конце каждой зоны печи с параметрами агрегата и значениями штатных средств измерения в процессе нагрева. Показаны достоинства и недостатки аналитических и статистических математических моделей. Приведено сравнение экспериментальных данных со значениями, рассчитанными по статистической и аналитической моделям для печи стана 5000. Сформулированы основные выводы, базирующиеся на результатах проделанного исследования. The article considers a method for improving the thermal operation of walking beam heating furnaces of hot rolling mills based on statistical modeling. Using the results obtained in the course of conducting automated directed heat-technological industrial experiments on continuous heating furnaces of wide-strip sheet hot rolling mills of Russian metallurgical enterprises, a statistical model has been developed that relates the temperature of the top, middle and bottom of the slab at the end of each furnace zone with the parameters of the unit and the values of standard measuring instruments during the heating process. The advantages and disadvantages of analytical and statistical mathematical models are shown. The experimental data are compared with the values calculated by statistical and analytical models for the furnace of the mill 5000. The main conclusions based on the results of the study are formulated.
- Published
- 2022
22. Asymmetric relay autotuning – Practical features for industrial use.
- Author
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Berner, Josefin, Hägglund, Tore, and Åström, Karl Johan
- Subjects
- *
PID controllers , *AUTOMATIC control systems , *SELF-tuning controllers , *PARAMETER estimation , *INDUSTRIAL controls manufacturing - Abstract
The relay autotuner provides a simple way of finding PID controller parameters. Even though relay autotuning is much investigated in the literature, the practical aspects are not that well-documented. In this paper an asymmetric relay autotuner with features such as a startup procedure and adaptive relay amplitudes is proposed. Parameter choices and handling of noise, disturbances, start in non-steady state and other possible error sources are discussed. The autotuner is implemented and tested on an industrial air handling unit to show its use in practice. The experiments show good results, and prove that the proposed simple autotuner is well-suited for industrial use. But the experiments also enlighten possible error sources and remaining problems. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
23. Charcoal production environmental performance.
- Author
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Kļaviņa, K., Kārkliņa, K., and Blumberga, D.
- Subjects
- *
CHARCOAL , *BIOMASS , *PYROLYSIS , *CHARCOAL industry , *FOSSIL fuels ,ENVIRONMENTAL aspects - Abstract
Charcoal is a well-known material obtained through thermal conversion of different types of biomass in an anoxic environment. The greatest share of the overall charcoal amount is produced in inefficient batch pyrolysis chambers. Thus contribution in an in-depth charcoal production process research for process optimization is of great importance. In this study an industrial experiment of charcoal production in a continuous up-to-date retort is performed. The selected industrial object has a high level of automation and process control. The retort is connected to a continuous monitoring system that records and stores the process parameter values. Apart from the process control parameter measurements attention has to be paid to the charcoal production plant pollution as this industry often gets contradictory attention towards its environmental performance. The air pollution is evaluated by air quality measurements at the production facility site. The obtained experimental results from an industrial facility with a state of- the-art technology give an opportunity to evaluate the potential of the charcoal industry to be a sustainable player in the renewable energy market. [ABSTRACT FROM AUTHOR]
- Published
- 2015
24. Dynamic Modelling of a Large Scale Air Lift Fermenter
- Author
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Trystram, G., Pigache, S., Yano, Toshimasa, editor, Matsuno, Ryuichi, editor, and Nakamura, Kozo, editor
- Published
- 1994
- Full Text
- View/download PDF
25. ВЫБОР ОПТИМАЛЬНЫХ РЕЖИМОВ ЭЛЕКТРОЭРОЗИОННОЙ ОБРАБОТКИ ПАЗОВ ДЕТАЛИ «ДИСК» МАЛОГАБАРИТНОГО ДВУХКОНТУРНОГО ТУРБОРЕАКТИВНОГО ДВИГАТЕЛЯ
- Subjects
electroerosive treatment ,априорное ранжирование ,turbojet engine ,шероховатость поверхности ,a priori ranking ,surface roughness ,industrial experiment ,промышленный эксперимент ,электроэрозионная обработка ,турбореактивный двигатель - Abstract
В статье рассмотрены конструктивные особенности детали «Диск» малогабаритного двухконтурного турбореактивного двигателя. Указаны проблемы, связанные с обработкой пазов для крепления турбинных лопаток детали «Диск». Обосновано применение электроэрозионной проволочно-вырезной обработки вместо протягивания. В статье выполнено априорное ранжирование факторов, влияющих на шероховатость поверхности пазов после электроэрозионной обработки. Значимые факторы в результате проведенного исследования – сила тока, расстояние между электродом и заготовкой, скорость промотки проволоки. Проведен промышленный эксперимент и получена математическая зависимость, описывающая связь шероховатости обработанной поверхности с силой тока, расстоянием между электродом и заготовкой, а также скоростью промотки проволоки. Определены оптимальные режимы обработки для достижения требуемой шероховатости поверхности после электроэрозионной обработки., The article considers the design features of the "Disk" part of a small-sized double bypass turbojet engine. The study outlines the problems associated with the processing of the grooves for fixing the turbine blades of the part as well as justifies the use of electrospark wire-cutting processing instead of stretching. The article provides a priori ranking of the factors that affect the roughness of the surface of the grooves after spark eroding. The important factors in the conducted research are the current strength, the distance between the electrode and the workpiece, and the speed of wire winding. The study conducts an industrial experiment and obtains a mathematical dependency that describes the relationship of the roughness of the spark-eroded surface with the current strength, the distance between the electrode and the workpiece, as well as the wire winding speed. Finally, the study determines the optimal treatment modes for achieving the required surface roughness after spark eroding., Международный научно-исследовательский журнал, Выпуск 6 (108) 2021, Pages 146-151
- Published
- 2021
- Full Text
- View/download PDF
26. Experimental study of the quality of ore crushing for underground leaching
- Author
-
Golik, Vladimir Ivanovich, Razorenov, Yuri Ivanovich, Komashchenko, Vitaly Ivanovich, and Burdzieva, Olga Germanovna
- Subjects
Mineralization (geology) ,месторождения ,Explosive material ,дробление ,metal ,распределение ,Materials Science (miscellaneous) ,взрывная отбойка ,Management, Monitoring, Policy and Law ,deposit ,Industrial experiment ,Mining engineering ,Component (UML) ,lump size ,Extraction (military) ,content ,ore ,Waste Management and Disposal ,Subsoil ,component distribution ,geography ,geography.geographical_feature_category ,model ,подземное выщелачивание ,компоненты ,blasting ,crushing ,Massif ,Geotechnical Engineering and Engineering Geology ,Shoring ,leaching ,Fuel Technology ,руды ,extraction ,Environmental science ,Economic Geology ,Leaching (metallurgy) ,металлы ,промышленные эксперименты ,извлечения - Abstract
Актуальность исследования вызвана необходимостью поиска новых путей для увеличения производства металлов. Объёмы некондиционных по содержанию металлов руд новых и строящихся месторождений техногенных массивов могут быть вовлечены в производство с повышением безотходности освоения недр. Цель: повышение качества взрывного дробления руд для подземного выщелачивания металлов путем экспериментального обоснования параметров отделения от массива и дробления металлических руд. Объект: рудовмещающий массив и технологические процессы отбойки и дробления руд конкретного месторождения в ходе полномасштабного эксперимента в опытном блоке. Методология: критический анализ теории и практики отбойки и дробления руд для выщелачивания в магазине, организация мониторинга выщелачиваемого массива в ходе извлечения металлов, моделирование и интерпретация результатов исследований. Результаты. Дана краткая справка по истории вопроса. Описана методика осуществления промышленного эксперимента на месторождении вскрываемых руд. Систематизированы показатели взрывной отбойки руд в процессе их магазинирования. Предложен критерий дробимости руд взрывом. Выполнена математическая обработка результатов взрывной отбойки руды. Показано, что способ выщелачивания даже при коэффициенте извлечения 70 % не конкурирует с традиционными технологиями из-за потери полезного компонента и требует совершенствования. Установлены закономерности распределения полезного компонента в классах отбитой руды, описываемые логарифмически-нормальным законом Гаусса. Показано, что размер куска, который соответствует среднеарифметическому значению содержания полезного компонента объективно характеризует качество отбитой для подземного выщелачивания руды. Сформулировано отличие предлагаемого метода от традиционного расчета средневзвешенного линейного размера, не учитывающего неравномерность распределения металла между фракциями. Предложена обобщенная модель взрывной подготовки руд к выщелачиванию. Изучение распределения содержания полезного компонента в отбитой руде в зависимости от вещественного состава, характера минерализации, общего содержания металла в рудовмещающих породах, технологии рудоподготовки может оказать существенное влияние на показатели выщелачивания. The relevance of the study is caused by the need to find new ways to increase the production of metals. The volumes of substandard ores in terms of metal content of new and under construction man-made deposits can be involved in production with increase in the wastelessness of subsoil development. The aim of the research is to improve the quality of explosive crushing of ores for underground leaching of metals by experimentally substantiating the parameters of separation from the massif and crushing of metal ores. Object: ore-bearing massif and technological processes of breaking and crushing of ores of a particular deposit during a full-scale experiment in a pilot block. Methodology: critical analysis of the theory and practice of breaking and crushing ores for leaching in the store, organization of monitoring of the leached massif during the extraction of metals, modeling and interpretation of research results. Results. The paper introduces a brief reference on the history of the issue and describes the technique of carrying out an industrial experiment at a deposit of exposed ores. The authors have systematized the indicators of explosive breaking of ores in their shoring and proposed a criterion of ore crushing by explosion. The mathematical processing of the results of ore blasting was carried out. It was shown that the leaching method, even with a recovery factor of 70 %, does not compete with traditional technologies due to the loss of a useful component and requires improvement. The regularities of useful component distribution in the classes of chipped ore, described by the logarithmic-normal Gauss law, were established. It is shown that the size of the piece, which corresponds to the arithmetic mean of the content of the useful component, objectively characterizes the quality of the ore chipped for underground leaching. The difference between the proposed method and the traditional calculation of the weighted average linear size, which does not take into account the uneven distribution of metal between fractions, is formulated. The authors proposed the generalized model of explosive preparation of ores for leaching. The study of the useful component content distribution in the chipped ore, depending on the material composition, the nature of mineralization, the total metal content in the ore-bearing rocks, the technology of ore preparation can have a significant impact on the leaching indicators.
- Published
- 2021
27. Розроблення товарної політики підприємства в умовах олігополістичної конкуренції
- Author
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Солнцев, Сергій Олексійович
- Subjects
металургійний ринок ,ринок молольних тіл ,commodity, metallurgical market ,market of grinding bodies ,industrial experiment ,конкурентоспроможність товару ,олігополістична конкуренція ,competitiveness of commodity ,маркетинг ,товар ,commodity policy ,marketing ,338.33 ,товарна політика ,oligopolistic competition ,промисловий експеримент - Abstract
Основна частина магістерської дисертації виконана на 121 сторінку, містить 26 таблиць, 47 рисунків та 4 додатка. Метою даної роботи є розроблення товарної політики компанії «Метінвест» на ринку молольних тіл для гірничо-збагачувальних комбінатів. У ході роботи були сформульовані основні положення та категорії товарної політики, систематизовані основні моделі функціонування ринку з олігополістичною конкуренцією та наведено теоретичний механізм вдосконалення товарної політики підприємства. В результаті проведення аналізу внутрішнього та маркетингового середовища компанії, було діагностовано маркетингово-управлінську проблему яку сформулювали як модифікація асортиментної групи великих молольних тіл ( 80- 120 мм) для гірничо-збагачувальних комбінатів. Для вирішення виявленої МУП була розроблена методологія збору та аналізу первинних та вторинних даних. Для збору первинних даних були застосовані такі методи дослідження як промисловий експеримент, інтерв’ю з експертами ринку та глибинні інтерв’ю зі споживачами. Збір кількісних даних відбувався за допомогою методу основного масиву. Для аналізу зібраної інформації була застосована якісна та кількісна оцінка даних. Основними результатами дослідження є розробка комплексної товарної стратегії компанії «МЕТІНВЕСТ» на ринку молольних тіл, формування практичних рекомендацій по виведенню найбільш конкурентоспроможних варіацій товару із врахуванням внутрішніх можливостей підприємства. Слід звернути увагу на складність аналізу промислового ринку молольних тіл України, та відсутність досліджень на дану тематику. В ході роботи був розроблений ряд теоретичних моделей, які можна застосовувати уніфіковано для різних ринків з олігополістичною конкуренцією та розроблені унікальні методики аналізу даних. The main part of the master's dissertation is made on 121 pages, contains 26 tables, 47 figures and 4 appendices. The purpose of this work is to develop a product policy of METINVEST in the market of grinding bodies for mining and processing plants. In the course of the work the main provisions and categories of commodity policy were formulated, the main models of market functioning with oligopolistic competition were systematized and the theoretical mechanism of improving the commodity policy of the enterprise was given. As a result of the analysis of the internal and marketing environment of the company, the marketing and management problem was diagnosed, which was formulated as a modification of the assortment group of large grinding bodies ( 80-120 mm) for mining and processing plants. A methodology for collecting and analyzing primary and secondary data was developed to address the identified MMP. Research methods such as industrial experimentation, interviews with market experts and in-depth interviews with consumers were used to collect primary data. Quantitative data were collected using the main array method. Qualitative and quantitative evaluation of data was used to analyze the collected information. The main results of the study are the development of a comprehensive product strategy of METINVEST in the market of grinding bodies, the formation of practical recommendations for deriving the most competitive variations of the product, taking into account the internal capabilities of the enterprise. It should be noted the complexity of the analysis of the industrial market of dairy bodies in Ukraine, and the lack of research on this topic. In the course of the work a number of theoretical models were developed that can be applied uniformly for different markets with oligopolistic competition and unique methods of data analysis were developed.
- Published
- 2021
28. Numerical simulations and industrial experiments of liquid steel alloying process in one strand slab tundish.
- Author
-
Cwudziński, A.
- Subjects
- *
NUMERICAL analysis , *STEEL alloy industry , *NICKEL , *CONSTRUCTION slabs , *CASTING (Manufacturing process) , *DISSOLUTION (Chemistry) , *METALLURGIC chemistry - Abstract
The present paper discusses the results of tests in which batches of nickel in the form of crowns were introduced to liquid steel in a continuous casting slab tundish during experiments to investigate steel alloying during casting. Suction liquid steel samples taken from both tundish and mould were assayed for chemical composition. Computer simulations of liquid steel flow and alloy addition behaviour were performed using the commercial program Ansys-Fluent. Owing to the complexity of alloy dissolution and dispersion in metallurgical processes, a decision was made to use the Species Model. The obtained fields of liquid steel flow and nickel distribution and the curves of nickel concentration in time constitute a source of information about the dynamics and complexity of the steel alloying process during continuous steel casting. The present studies show influence of different addition positions and different flow control devices on liquid steel chemical homogenisation process. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
29. THE INFLUENCE OF STEEL PREHEATING LEVEL IN THE TUNDISH ON THE PRIMARY STRUCTURE OF A CONTINUOUSLY CAST INGOT.
- Author
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PIEPRZYCA, J., MERDER, T., WARZECHA, M., and SKORUPA, J.
- Subjects
- *
CRYSTALLIZATION , *INGOTS , *METAL castings , *MOLECULAR structure , *CONTINUOUS casting , *LIQUID metals , *STEEL analysis - Abstract
The article presents the results of industrial measurements carried out on continuous casting machine during its normal working operation. The aim of the research was to determine the influence of steel preheating level on the size of particular crystallization areas of ingot primary structure. [ABSTRACT FROM AUTHOR]
- Published
- 2015
30. Improvement of Hot-Rolling Mill Heating Furnace Efficiency from Industrial Experiment Results.
- Author
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Epishin, A., Asaturyan, I., Belen'kii, A., Bursin, A., and Ulanovskii, A.
- Subjects
- *
HOT rolling , *ROLLING-mills , *FURNACES , *HEATING of metals , *ENERGY consumption , *METALLURGY - Abstract
Data are provided for a study of metal heating in continuous heating furnaces for different types of billet. Examples are provided for use of different instruments for analysing furnace thermal performance obtained after industrial experiments. Results are presented in the form of graphs and tables. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
31. Numerical, Physical, and Industrial Experiments of Liquid Steel Mixture in One Strand Slab Tundish with Flow Control Devices.
- Author
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Cwudziński, Adam
- Subjects
- *
FLOW control (Data transmission systems) , *SCIENTIFIC experimentation , *STEEL mills , *STEEL castings , *GLASS casting , *MAP (Computer program language) - Abstract
The paper presents investigation results related to a tundish furnished with a flow control devices (FCD). The facility under investigation is a one-strand tundish used for casting concast slabs. To evaluate the influence of FCDs on the pattern of liquid steel flow, an industrial and a laboratory experiments (physical and numerical simulation) were carried out. In collaboration with Vesuvius, a refractory materials manufacturer, and the ISD Czestochowa Steelworks Ltd., pilot industrial tests were carried out. Based on data acquired from the industry, a glass tundish model on a scale of 1:2.5 was made. A tundish in the form of virtual models was prepared for numerical simulations using the Gambit 2.4 software program. Commercial software Ansys-Fluent® was used for solving the mathematical model of the liquid steel flow. From the industrial and laboratory experiments, results were obtained, which provided a basis for plotting curves describing the steel mixing process in the tundish. In addition, the computer simulations provided also a valuable source of information about the flow directions, flow intensity and temperature of the liquid steel, represented in the form of maps. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
32. Industrial Experiment of Goaf Filling Using the Filling Materials Based on Hemihydrate Phosphogypsum
- Author
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Wentao Lan, Kuanwei Rong, and Hongyan Li
- Subjects
Cement ,lcsh:Mineralogy ,lcsh:QE351-399.2 ,Consolidation (soil) ,Ecological environment ,Hemihydrate ,0211 other engineering and technologies ,Geology ,Phosphogypsum ,industrial experiment ,02 engineering and technology ,010501 environmental sciences ,Geotechnical Engineering and Engineering Geology ,01 natural sciences ,Mining engineering ,underground mine ,filling materials ,Filling materials ,goaf filling ,021105 building & construction ,Groundwater-related subsidence ,Environmental science ,hemihydrate phosphogypsum ,0105 earth and related environmental sciences - Abstract
The surface stockpiling of phosphogypsum not only occupies a large amount of land, but also seriously harms the surrounding ecological environment. The preparation of phosphogypsum into filling materials for mine filling can not only maintain the stability of surrounding rock, reduce surface subsidence, enhance the recovery of resources, but it can also completely solve the problem of phosphogypsum stockpiling. Under certain activation conditions, hemihydrate phosphogypsum has a strong cementing property. It is an important way to reduce the filling cost by using hemihydrate phosphogypsum instead of cement as a cementing material. Through laboratory experiments, the filling materials based on hemihydrate phosphogypsum were developed. In order to further verify its feasibility in practical filling engineering, the industrial experiment of goaf filling was carried out in a phosphorus mine. The results show that the filling system was simple, reliable, and easy to operate and manage. The strength of the filling body basically reached the expected strength target of 2.5 MPa in 3 days. The consolidation speed of the filling materials was faster, which is beneficial to the safe underground construction of the mine. The results of the industrial experiment of goaf filling indicate that the filling materials based on hemihydrate phosphogypsum are suitable for mine filling engineering practice, the work amount is small, and the filling cost is low.
- Published
- 2020
33. Avocado oil extraction: An industrial experiment
- Author
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L. Martínez Nieto, R. Barranco Barranco, and María V. Moreno
- Subjects
avocado oil (obtaining) ,continuous process ,industrial experiment ,Nutrition. Foods and food supply ,TX341-641 - Abstract
The results of an industrial experiment to obtain avocado oil by continuous process similar to that for obtaining olive oil are analyzed. Possible ways of improving the method and thus the yield are pointed out.
- Published
- 1992
- Full Text
- View/download PDF
34. Industrial experiment of copper electrolyte purification by copper arsenite.
- Author
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Zheng, Ya-jie, Xiao, Fa-xin, Wang, Yong, Li, Chun-hua, Xu, Wei, Jian, Hong-sheng, and Ma, Yu-tian
- Abstract
Copper electrolyte was purified by copper arsenite that was prepared with As
2 O3 . And electrolysis experiments of purified electrolyte were carried out at 235 and 305 A/m2 , respectively. The results show that the yield of copper arsenite is up to 98.64% when the molar ratio of Cu to As is 1.5 in the preparation of copper arsenite. The removal rates of Sb and Bi reach 74.11% and 65.60% respectively after copper arsenite is added in electrolyte. The concentrations of As, Sb and Bi in electrolyte nearly remain constant during electrolysis of 13 d. The appearances of cathode copper obtained at 235 and 305 A/m2 are slippery and even, and the qualification rate is 100% according to the Chinese standard of high-pure cathode copper(GB/T467-97). [ABSTRACT FROM AUTHOR]- Published
- 2008
- Full Text
- View/download PDF
35. Industrial experiments on desulfurization of flue gases by pulsed corona induced plasma chemical process
- Author
-
Wu, Yan, Li, Jie, Wang, Ninghui, and Li, Guofeng
- Subjects
- *
CORONA discharge , *DESULFURIZATION - Abstract
Based on the large amount of data obtained in the laboratory, desulfurization studies of the flue gases on industrial experiment scale by Pulsed corona induced Plasma Chemical Process (PPCP) were accomplished. The flow rates of flue gases were 3000 and 12,000–20,000 Nm3/h. For a 1000–2000 ppm concentration of SO2, the removal rate of SO2 can be more than 80% with the flue gas temperature 70–80°C, water volume ratio 10%, resident time 5–8 s and energy consumption 3–4 Wh/Nm3. [Copyright &y& Elsevier]
- Published
- 2003
- Full Text
- View/download PDF
36. Multi-Criteria Methodology Contribution to the Software Quality Evaluation.
- Author
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Blin, Marie-José and Tsoukiàs, Alexis
- Abstract
Industrial evaluations of COTS software largely used the quality models provided by the international standards. But the context and objectives of COTS evaluations are fundamentally different than those primarily defined by the standards. Several key issues are often forgotten: (1) the existence of several evaluators and several quality models sharing common factors, criteria and measures, (2) the purpose of the evaluation model, (3) measures of different types, and (4) the recursive nature of the model since each node is an evaluation model itself. We had the occasion to study the results of real standard-based COTS evaluations. Faced with the difficulties to exploit them, we experimented the use of multi-criteria methodology. This work allows us to understand some of the problems generated by the application of the standards to COTS evaluations, and to propose new principles for evaluating software quality that should be considered in an evolution of the standards. This paper reports our experiment. [ABSTRACT FROM AUTHOR]
- Published
- 2001
- Full Text
- View/download PDF
37. Exception Handling: Formal Specification and Systematic Program Construction.
- Author
-
Bidoit, Michel, Biebow, Brigitte, Gaudel, Marie-Claude, Gresse, Christian, and Guiho, Gerard D.
- Subjects
- *
PROGRAMMING languages , *SOFTWARE engineering , *COMPUTER programming , *COMPUTER software , *TECHNICAL specifications , *SYSTEMS theory - Abstract
We present an algebraic specification language (PLUSS) and a program construction method. Programs ate built systematically from an algebraic specification of the data they deal with. The method was tested on a realistic problem (part of a telephone switching system). In these experiments, it turned out that error handling was the difficult part to specify and to program. This paper shows how to cope with this problem at the specification level and during the program development process. [ABSTRACT FROM AUTHOR]
- Published
- 1985
38. Industrial Experiment of Goaf Filling Using the Filling Materials Based on Hemihydrate Phosphogypsum.
- Author
-
Rong, Kuanwei, Lan, Wentao, and Li, Hongyan
- Subjects
- *
FILLER materials , *PHOSPHOGYPSUM , *UNDERGROUND construction , *WASTE recycling , *GUTTA-percha , *LAND subsidence - Abstract
The surface stockpiling of phosphogypsum not only occupies a large amount of land, but also seriously harms the surrounding ecological environment. The preparation of phosphogypsum into filling materials for mine filling can not only maintain the stability of surrounding rock, reduce surface subsidence, enhance the recovery of resources, but it can also completely solve the problem of phosphogypsum stockpiling. Under certain activation conditions, hemihydrate phosphogypsum has a strong cementing property. It is an important way to reduce the filling cost by using hemihydrate phosphogypsum instead of cement as a cementing material. Through laboratory experiments, the filling materials based on hemihydrate phosphogypsum were developed. In order to further verify its feasibility in practical filling engineering, the industrial experiment of goaf filling was carried out in a phosphorus mine. The results show that the filling system was simple, reliable, and easy to operate and manage. The strength of the filling body basically reached the expected strength target of 2.5 MPa in 3 days. The consolidation speed of the filling materials was faster, which is beneficial to the safe underground construction of the mine. The results of the industrial experiment of goaf filling indicate that the filling materials based on hemihydrate phosphogypsum are suitable for mine filling engineering practice, the work amount is small, and the filling cost is low. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
39. Testing in Industrial Experiments with Ordered Categorical Data
- Author
-
Nair, Vijayan N. and Dehnad, Khosrow, editor
- Published
- 1989
- Full Text
- View/download PDF
40. ABOUT INFLUENCE OF STRUCTURAL FEATURES OF HEATER STOVE ON DISTRIBUTION OF TEMPERATURE INTO CHAMBER
- Author
-
Liush, Yuliia Borysivna
- Subjects
нагревательная печь ,энергоэффективность ,распределение температуры ,промышленный эксперимент ,тепловая энергия ,нагрев металла ,нагрівальна піч ,енергоефективність ,розподіл температури ,промисловий експеримент ,теплова енергія ,нагрів металу ,heater stove ,energy efficiency ,distribution of temperature ,industrial experiment ,thermal energy ,metal heating - Abstract
В работе представлены результаты промышленного эксперимента по определению характера влияния конструктивных параметров печи на распределение температуры по объему камеры. Получены зависимости ее изменения в зоне размещения нагреваемых изделий от местоположения горелочных устройств и окон для отвода продуктов сгорания, а также от изменения расхода газа на печь., У роботі представлені результати промислового експерименту з визначення характеру впливу конструктивних параметрів печі на розподіл температури за об’ємом камери. Отримано залежності її зміни в зоні розташування виробів, що нагріваються, від місцезнаходження пальникових пристроїв та вікон для відведення продуктів згорання, а також зміна витрат газу на піч., The results of industrial experiment are In-process presented on determination of character of influence of structural parameters of stove on distribution of temperature on volume chambers. Dependences of her change are got in the zone of placing of the heated wares from the site of gas-ring devices and windows for taking of foods of combustion, and also from the change of gas expense on a stove.
- Published
- 2016
41. Heat Transfer Characteristics of Heat Exchangers for Waste Heat Recovery from a Billet Casting Process.
- Author
-
Kang, Ju O and Kim, Sung Chul
- Subjects
HEAT exchangers ,HEAT recovery ,HEAT transfer ,HEAT radiation & absorption ,WASTE heat ,ENTHALPY ,THERMOELECTRIC generators - Abstract
The application of the thermoelectric generator (TEG) system to various industrial facilities has been explored to reduce greenhouse gas emissions and improve the efficiency of such industrial facilities. In this study, numerical analysis was conducted according to the types and geometry of heat exchangers and manufacture process conditions to recover waste heat from a billet casting process using the TEG system. The total heat absorption increased by up to 10.0% depending on the geometry of the heat exchanger. Under natural convection conditions, the total heat absorption increased by up to 45.5%. As the minimum temperature increased, the effective area increased by five times. When a copper heat exchanger of direct conduction type was used, the difference between the maximum and minimum temperatures was significantly reduced compared to when a stainless steel heat exchanger was used. This confirmed that the copper heat exchanger is more favorable for securing a uniform heat exchanger temperature. A prototype TEG system, including a thermosyphon heat exchanger, was installed and a maximum power of 8.0 W and power density of 740 W/m
2 was achieved at a hot side temperature of 130 °C. The results suggest the possibility of recovering waste heat from billet casting processes. [ABSTRACT FROM AUTHOR]- Published
- 2019
- Full Text
- View/download PDF
42. Industrial Experiment of Reducing Superheat of Steel by Nozzle Cooling
- Author
-
Yan, Hui-cheng, Qiu, Sheng-tao, Tong, Tai-qin, Cai, Yun-teng, Wang, Zhong-ying, and Zhao, Pei
- Published
- 2011
- Full Text
- View/download PDF
43. О ВЛИЯНИИ КОНСТРУКТИВНЫХ ОСОБЕННОСТЕЙ НАГРЕВАТЕЛЬНОЙ ПЕЧИ НА РАСПРЕДЕЛЕНИЕ ТЕМПЕРАТУРЫ ВНУТРИ КАМЕРЫ
- Author
-
Liush, Yuliia Borysivna; Запорізька державна інженерна академія and Liush, Yuliia Borysivna; Запорізька державна інженерна академія
- Abstract
В работе представлены результаты промышленного эксперимента по определению характера влияния конструктивных параметров печи на распределение температуры по объему камеры. Получены зависимости ее изменения в зоне размещения нагреваемых изделий от местоположения горелочных устройств и окон для отвода продуктов сгорания, а также от изменения расхода газа на печь., У роботі представлені результати промислового експерименту з визначення характеру впливу конструктивних параметрів печі на розподіл температури за об’ємом камери. Отримано залежності її зміни в зоні розташування виробів, що нагріваються, від місцезнаходження пальникових пристроїв та вікон для відведення продуктів згорання, а також зміна витрат газу на піч., The results of industrial experiment are In-process presented on determination of character of influence of structural parameters of stove on distribution of temperature on volume chambers. Dependences of her change are got in the zone of placing of the heated wares from the site of gas-ring devices and windows for taking of foods of combustion, and also from the change of gas expense on a stove.
- Published
- 2016
44. Industrial Experiment on Coke Spraying With ZBS Additive in Blast Furnace
- Author
-
Zhu, Zi-zong, Zhang, Zhu-ming, Tang, Qi-yong, Yang, Xue-feng, Zhang, Kun-hua, and Zhao, Xian-sheng
- Published
- 2006
- Full Text
- View/download PDF
45. About influence of structural features of heater stove on distribution of temperature into chamber
- Author
-
Liush, U.
- Subjects
нагрівальна піч ,нагрів металу ,нагревательная печь ,distribution of temperature ,розподіл температури ,теплова енергія ,industrial experiment ,промышленный эксперимент ,тепловая энергия ,621.783.2-027.236 ,thermal energy ,энергоэффективность ,heater stove ,енергоефективність ,metal heating ,нагрев металла ,распределение температуры ,energy efficiency ,промисловий експеримент - Abstract
У роботі представлені результати промислового експерименту з визначення характеру впливу конструктивних параметрів печі на розподіл температури за об’ємом камери. Отримано залежності її зміни в зоні розташування виробів, що нагріваються, від місцезнаходження пальникових пристроїв та вікон для відведення продуктів згорання, а також зміна витрат газу на піч. The results of industrial experiment are In-process presented on determination of character of influence of structural parameters of stove on distribution of temperature on volume chambers. Dependences of her change are got in the zone of placing of the heated wares from the site of gas-ring devices and windows for taking of foods of combustion, and also from the change of gas expense on a stove. В работе представлены результаты промышленного эксперимента по определению характера влияния конструктивных параметров печи на распределение температуры по объему камеры. Получены зависимости ее изменения в зоне размещения нагреваемых изделий от местоположения горелочных устройств и окон для отвода продуктов сгорания, а также от изменения расхода газа на печь.
- Published
- 2015
46. The Soft-Contact Method and Instruments for Measuring the Surface Temperature of Solids
- Author
-
Denisov, M. A.
- Published
- 2003
- Full Text
- View/download PDF
47. Optimization of Combined Blown Converter Process
- Author
-
Zhou, Xiaobin, Ersson, Mikael, Zhong, Liangcai, Jönsson, Pär, Zhou, Xiaobin, Ersson, Mikael, Zhong, Liangcai, and Jönsson, Pär
- Abstract
A 1/6th scaled down physical model was used to study and optimize the stirring condition of a 30 t converter. A number of parameters were studied and their effects on the mixing time were recorded. A new bottom tuyere scheme with an asymmetrical configuration was found to be one of the best cases with respect to a decreased mixing time in the bath. Mathematical modeling was employed to study the flow field characteristics caused by the new tuyere scheme. In the mathematical model, a comparison between the existing and the new tuyere setups was made with regards to the mixing time and turbulence in the bath. In addition, a new volumetric method for calculating the mixing time was applied. The results showed that, on average, a 23.1% longer mixing time resulted from the volumetric method compared to the standard method where discrete point are used to track the mixing time. Furthermore, an industrial investigation was performed to check the effects of the new tuyere scheme in a converter by analyzing the [O], [C] and [P] contents in the bath. The results showed that the application effects of the new tuyere scheme yield a better stirring condition in the bath compared to the original case., QC 20141121. Updated from manuscript to article in journal. Previous title: "Optimization of the Combined Blown Converter Process".
- Published
- 2014
- Full Text
- View/download PDF
48. VALORISATION DES SEDIMENTS FLUVIAUX POLLUES APRES INERTAGE DANS LA BRIQUE CUITE
- Author
-
Samara, Mazen, Laboratoire de Mécanique de Lille - FRE 3723 (LML), Université de Lille, Sciences et Technologies-Centrale Lille-Centre National de la Recherche Scientifique (CNRS), Ecole Centrale de Lille, and Frédéric Skoczylas(Frederic.Skoczylas@ec-lille.fr)
- Subjects
valorisation ,sédiments fluviaux ,pollution ,industrial experiment ,brique cuite ,valorization ,essais industriels ,calcination ,river sediments ,fired brick ,phosphatation ,[SPI.MAT]Engineering Sciences [physics]/Materials - Abstract
The accumulation of sediments at the bottom of rivers and channels leads to their silting-up. An important part of these sediments is actually polluted therefore; their management has become an environmental and economical concern. Treatment processes permit a reduction in toxicity and volume of dredged material. Thus, raw sediments were subjected to a preliminary treatment using the Novosol® process developed by the Solvay Company and composed of two phases: phosphatation and calcination. The objective of this study is to demonstrate the practical use of treated river sediments into brick production. Treated sediment (TS) is an odourless fine grained powder of a density of 2,66 g.cm-3 (comparable to quartz). It is composed mainly of quartz with a marked presence of calcite and hematite. The granules making up the bulk material are composed mainly of agglomerates of fine sintered particles. The laboratory experimental study has shown the practical use of TS in brick-making as a partial sand and clay substitute. The results of qualification tests (compressive strength, freeze and thaw resistance, water absorption) have shown that the substitution ratio has had an important impact on the quality of the brick. Two factory experiments were carried out to confirm the full-scale practical use of TS as a brick raw material. They showed that TS can be used with substitution rates up to 28% without any alteration of the manufacturing process. Bricks produced with 28% of TS showed a higher compressive strength than the standard ones. Finally, it was also shown that particle size and mineralogy of TS are important factors which influence the quality of bricks.; L'accumulation des sédiments au fond des cours d'eau conduit à leur envasement. Une grande quantité de ces sédiments est contaminée par des polluants organiques et inorganiques. Leur gestion soulève donc des défis technologiques, économiques et environnementaux de plus en plus importants. C'est dans ce contexte que la société Solvay a mis au point le procédé de traitement Novosol® qui se décompose en deux phases : la phosphatation et la calcination. La présente étude porte sur la valorisation des sédiments fluviaux pollués, après traitement avec le procédé Novosol®, dans la brique cuite. Le sédiment traité (ST) est composé majoritairement de quartz, de calcite et d'hématite. Sa masse volumique absolue est de 2,66 g.cm-3 comparable à celle du quartz. L'étude expérimentale menée en laboratoire a montré la faisabilité d'incorporation de ST dans la brique cuite comme un matériau de substitution au sable et à l'argile. Il a également été montré que la résistance à la compression est influencée par la quantité de sédiment. En effet, l'augmentation de cette dernière entraine une diminution de la résistance mécanique. Deux essais industriels ont été réalisés en se basant sur les résultats obtenus en laboratoire. Ils ont montré que le ST peut se substituer au sable et à l'argile avec des taux de substitution allant jusque 28% sans aucun changement de processus de fabrication. Les briques produites avec 28% de ST ont une résistance mécanique supérieure à celle de la brique standard. Enfin, il a été également montré que la granulométrie et la minéralogie du sédiment sont des facteurs déterminants qui influencent la qualité des briques produites.
- Published
- 2007
49. VALORIZATION OF POLLUTED RIVER SEDIMENTS AFTER TREATMENT IN FIRED CLAY BRICK
- Author
-
Samara, Mazen, Laboratoire de Mécanique de Lille - FRE 3723 (LML), Université de Lille, Sciences et Technologies-Ecole Centrale de Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Ecole Centrale de Lille, Frédéric Skoczylas(Frederic.Skoczylas@ec-lille.fr), and Université de Lille, Sciences et Technologies-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)
- Subjects
valorisation ,sédiments fluviaux ,pollution ,industrial experiment ,brique cuite ,valorization ,essais industriels ,calcination ,river sediments ,fired brick ,phosphatation ,[SPI.MAT]Engineering Sciences [physics]/Materials - Abstract
The accumulation of sediments at the bottom of rivers and channels leads to their silting-up. An important part of these sediments is actually polluted therefore; their management has become an environmental and economical concern. Treatment processes permit a reduction in toxicity and volume of dredged material. Thus, raw sediments were subjected to a preliminary treatment using the Novosol® process developed by the Solvay Company and composed of two phases: phosphatation and calcination. The objective of this study is to demonstrate the practical use of treated river sediments into brick production. Treated sediment (TS) is an odourless fine grained powder of a density of 2,66 g.cm-3 (comparable to quartz). It is composed mainly of quartz with a marked presence of calcite and hematite. The granules making up the bulk material are composed mainly of agglomerates of fine sintered particles. The laboratory experimental study has shown the practical use of TS in brick-making as a partial sand and clay substitute. The results of qualification tests (compressive strength, freeze and thaw resistance, water absorption) have shown that the substitution ratio has had an important impact on the quality of the brick. Two factory experiments were carried out to confirm the full-scale practical use of TS as a brick raw material. They showed that TS can be used with substitution rates up to 28% without any alteration of the manufacturing process. Bricks produced with 28% of TS showed a higher compressive strength than the standard ones. Finally, it was also shown that particle size and mineralogy of TS are important factors which influence the quality of bricks.; L'accumulation des sédiments au fond des cours d'eau conduit à leur envasement. Une grande quantité de ces sédiments est contaminée par des polluants organiques et inorganiques. Leur gestion soulève donc des défis technologiques, économiques et environnementaux de plus en plus importants. C'est dans ce contexte que la société Solvay a mis au point le procédé de traitement Novosol® qui se décompose en deux phases : la phosphatation et la calcination. La présente étude porte sur la valorisation des sédiments fluviaux pollués, après traitement avec le procédé Novosol®, dans la brique cuite. Le sédiment traité (ST) est composé majoritairement de quartz, de calcite et d'hématite. Sa masse volumique absolue est de 2,66 g.cm-3 comparable à celle du quartz. L'étude expérimentale menée en laboratoire a montré la faisabilité d'incorporation de ST dans la brique cuite comme un matériau de substitution au sable et à l'argile. Il a également été montré que la résistance à la compression est influencée par la quantité de sédiment. En effet, l'augmentation de cette dernière entraine une diminution de la résistance mécanique. Deux essais industriels ont été réalisés en se basant sur les résultats obtenus en laboratoire. Ils ont montré que le ST peut se substituer au sable et à l'argile avec des taux de substitution allant jusque 28% sans aucun changement de processus de fabrication. Les briques produites avec 28% de ST ont une résistance mécanique supérieure à celle de la brique standard. Enfin, il a été également montré que la granulométrie et la minéralogie du sédiment sont des facteurs déterminants qui influencent la qualité des briques produites.
- Published
- 2007
50. THE INFLUENCE OF STEEL PREHEATING LEVEL IN THE TUNDISH ON THE PRIMARY STRUCTURE OF A CONTINUOUSLY CAST INGOT
- Author
-
Jacek Pieprzyca, Merder, T., Warzecha, M., and Skorupa, J.
- Subjects
lcsh:TN1-997 ,tundish ,continuous casting ,liquid steel ,mold ,industrial experiment ,lcsh:Mining engineering. Metallurgy - Abstract
The article presents the results of industrial measurements carried out on continuous casting machine during its normal working operation. The aim of the research was to determine the influence of steel preheating level on the size of particular crystallization areas of ingot primary structure.
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