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2. Mechanical characteristics of magnetite as a function of particle size during column-based magnetic separation

Author

Shujuan Dai, Mingrui Zhang, Xiaofei Guo, and Weijie Ren

Subjects
Chemistry, Economies of agglomeration, Process Chemistry and Technology, General Chemical Engineering, Magnetic separation, Filtration and Separation, General Chemistry, Function (mathematics), Magnetic particle inspection, chemistry.chemical_compound, Chemical engineering, Magnetic nanoparticles, Particle size, Granularity, Magnetite
Abstract

Column-based magnetic separation can concentrate magnetite while preventing magnetic particle agglomeration. Changes in the force characteristics during this process greatly affect the separation o...

Published
2021

3. Influence of particle size on the magnetism of magnetite and the development of an energy-efficient three-product magnetic separator

Author

Shujuan Dai, Mingrui Zhang, Xiaofei Guo, and Weijie Ren

Subjects
Mineral, Economies of agglomeration, Magnetism, Process Chemistry and Technology, General Chemical Engineering, Magnetic separator, Filtration and Separation, 02 engineering and technology, General Chemistry, 010501 environmental sciences, 01 natural sciences, chemistry.chemical_compound, 020401 chemical engineering, chemistry, Chemical engineering, Product (mathematics), Particle size, 0204 chemical engineering, 0105 earth and related environmental sciences, Magnetite
Abstract

The magnetism of minerals plays an important role in magnetic agglomeration. In this paper, the relationship between the magnetism of magnetite ore and particle size was revealed by mineral liberat...

Published
2020

4. One-pot synthesis of carbon dots co-doped with N and S: high quantum yield governed by molecular state and fluorescence detection of Ag+

Author

Jingjing Bai, Fei Liu, Wang Yulong, Li Zhenzhong, Zhao Yanliang, and Weijie Ren

Subjects
010304 chemical physics, One-pot synthesis, Biophysics, Quantum yield, chemistry.chemical_element, Nanoparticle, 010402 general chemistry, Condensed Matter Physics, 01 natural sciences, Fluorescence, Hydrothermal circulation, 0104 chemical sciences, chemistry.chemical_compound, chemistry, 0103 physical sciences, Physical and Theoretical Chemistry, Citric acid, Molecular Biology, Carbon, Co doped, Nuclear chemistry
Abstract

Fluorescent carbon-based nanoparticles, called chronically as carbon dots (CDs), were synthesised from citric acid (CA) and 2-Aminothiophenol (2AT) via an N and S co-doped hydrothermal method. Afte...

Published
2019

5. Tension–compression asymmetry in yield strength and hardening behaviour of as-extruded AZ31 alloy

Author

Jinbao Lin, Lifeng Ma, Xinyi Wang, and Weijie Ren

Subjects
010302 applied physics, Materials science, Yield (engineering), Viscoplasticity, Mechanical Engineering, media_common.quotation_subject, Metallurgy, 02 engineering and technology, Slip (materials science), 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Asymmetry, Mechanics of Materials, 0103 physical sciences, Ultimate tensile strength, Hardening (metallurgy), General Materials Science, Composite material, Magnesium alloy, 0210 nano-technology, Crystal twinning, media_common
Abstract

The effects of texture and twinning on the yield asymmetry and differential work-hardening behaviour of an as-extruded AZ31 alloy under uniaxial compression and tension are investigated using a viscoplastic self-consistent model. The results show that the yield asymmetry and differential work-hardening behaviour can be attributed to the combined effects of strong fibre texture and the polar nature of twinning. The variation in the relative activity of each deformation mode under compressive deformation is much more complex than that under tension. Under tensile deformation, the major deformation modes are prismatic and pyramidal slips, while twinning and basal slip are the major deformation modes under compressive deformation. The presence of extension twins and contraction twins is confirmed by microstructural observations.

Published
2016

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