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Study on the Influence of Industrial Coke Oven Size on the Quality of Metallurgical Coke.

Authors :
Hao, Liangyuan
Zhang, Jianliang
Cheng, Huan
Xiao, Luying
Liao, Fei
Hu, Wenjia
Source :
Processes; Aug2024, Vol. 12 Issue 8, p1637, 16p
Publication Year :
2024

Abstract

The large-scale coke oven is a developing trend in coking technology, and the influence of the industrial coke oven size on the quality of metallurgical coke needs to be revealed. Under the same raw coals and blending ratios, metallurgical cokes were obtained from top-loading coke ovens with carbonization chamber heights of 6 and 7 m, respectively. The macroscopic quality and microstructure of the refined metallurgical cokes were comprehensively tested. The results showed that the conventional cold and thermal strength indexes of Coke-7m were better than those of Coke-6m. The comprehensive thermal strength at multiple temperatures further showed that the thermal strength advantage of Coke-7m was mainly manifested at low temperatures (1050 and 1100 °C) or a high temperature (1300 °C), where the solution-loss reaction mode of coke tended to be the "uniform reaction model" or "unreacted core model". At medium temperatures, the solution-loss reaction mode tended to be the "gradient reaction model", which had a greater destructive effect on the thermal strength of coke. At this time, the thermal strengths of the two cokes were close. Microstructure characterization revealed that industrial coke oven size mainly affected the carbon structure of coke but had little effect on pore structure. The advantage of Coke-7m regarding carbon structure is an important reason for its superior macroscopic quality compared to Coke-6m. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
22279717
Volume :
12
Issue :
8
Database :
Complementary Index
Journal :
Processes
Publication Type :
Academic Journal
Accession number :
179379306
Full Text :
https://doi.org/10.3390/pr12081637