Journal ArticleDOI
Pilot-scale study on enhanced carbothermal reduction of low-grade pyrolusite using microwave heating
Kangqiang Li,Jin Chen,Jinhui Peng,Jinhui Peng,Roger Ruan,Chandrasekar Srinivasakannan,Guo Chen,Guo Chen,Guo Chen +8 more
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TLDR
In this article, a pilot-scale study was initiated to evaluate the enhanced effect of microwave heating on carbothermal reduction process of pyrolusite, and the results indicated that the non-conventional technology by microwave heating to reduce low-grade pyroxite is very promising and could be considered for full scale applications.About:
This article is published in Powder Technology.The article was published on 2020-01-15. It has received 62 citations till now. The article focuses on the topics: Pyrolusite.read more
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Kinetics characteristics and microwave reduction behavior of walnut shell-pyrolusite blends.
Kangqiang Li,Qi Jiang,Guo Chen,Lei Gao,Jinhui Peng,Quan Chen,Sivasankar Koppala,Mamdouh Omran,Jin Chen +8 more
TL;DR: Fitting analysis based on Coats-Redfern method revealed that chemical reaction was the control step of the process of reducing pyrolusite by biomass, which the finding matched to the isothermal kinetic analysis results determined through unreacted shrinking nuclear model.
Journal ArticleDOI
Investigations on the microwave absorption properties and thermal behavior of vanadium slag: Improvement in microwave oxidation roasting for recycling vanadium and chromium.
Kangqiang Li,Qi Jiang,Lei Gao,Jin Chen,Jinhui Peng,Jinhui Peng,Sivasankar Koppala,Mamdouh Omran,Guo Chen,Guo Chen,Guo Chen +10 more
TL;DR: The maximum dielectric constant and highest microwave heating rate of vanadium slag both appeared at the temperature regime of 500 °C-550C, which was also the main temperature regime for oxidation decomposition of olivine phase and normal spinel phase in vanadiumSlag, demonstrating the appropriate process temperature for microwave heating technology to recycle vanadiumslag.
Journal ArticleDOI
Efficient improvement for dissociation behavior and thermal decomposition of manganese ore by microwave calcination
Journal ArticleDOI
Optimisation on the stability of CaO-doped partially stabilised zirconia by microwave heating
Yeqing Ling,Yeqing Ling,Qiannan Li,Qiannan Li,Hewen Zheng,Hewen Zheng,Mamdouh Omran,Lei Gao,Jin Chen,Guo Chen,Guo Chen +10 more
TL;DR: In this article, controllable microwave heating was used for the uniform thermal field and consequent microstructure improvement to further improve the stability of partially stabilised zirconia, which was 88.14% prepared by electric arc melting.
Journal ArticleDOI
Modeling and kinetics study of microwave heat drying of low grade manganese ore
Jinjia Du,Lei Gao,Yong Yang,Shenghui Guo,Jin Chen,Jin Chen,Mamdouh Omran,Guo Chen,Guo Chen,Guo Chen +9 more
TL;DR: In this paper, the microwave drying experiments were conducted under different particle size distributions and different microwave power conditions to explore the basic theory of microwave drying characteristics and kinetics of manganese ore, and the experimental data were fitted and analyzed by using thin layer drying dynamics model.
References
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Microstructure and crystallographic texture of an ultrafine grained C-Mn steel and their evolution during warm deformation and annealing
TL;DR: In this article, the evolution of microstructure and texture of a 0.2%C-Mn steel during large strain warm deformation and subsequent annealing has been investigated.
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Water gas shift reaction for the reformed fuels over Cu/MnO catalysts prepared via spinel-type oxide
TL;DR: In this paper, a 1/2 ratio for catalytic activity of the Cu-Mn oxide system was obtained after high temperature calcination at 900 ˚C and subsequent reduction.
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Carbothermal reduction for preparing nZVI/BC to extract uranium: Insight into the iron species dependent uranium adsorption behavior
Huimin Zhang,Yang Ruan,Aiping Liang,Kaimin Shih,Zenghui Diao,Minhua Su,Li'an Hou,Diyun Chen,Hui Lu,Lingjun Kong,Lingjun Kong +10 more
TL;DR: In this article, a green carbothermal reduction process was conducted to prepare environmental friendly biochar-supported nano zero-valent iron (nZVI/BC) in order to investigate the immobilization behavior of uranium on ZVI, oxidized nZVI and Fe3O4 from wastewater.
Journal ArticleDOI
Percolation leaching of manganese ore by aqueous sulfur dioxide
TL;DR: Aqueous SO 2 has been found to be an effective leachant for manganese dissolution owing to fast dissolution kinetics and low temperatures as mentioned in this paper, and Bench-scale experimental results have established the best conditions for the leaching operation in terms of SO 2 concentration, pH, solution flow rate, ore particle size and time.
Journal ArticleDOI
Influence of aluminum and manganese concentration on the shape memory characteristics of Cu–Al–Mn shape memory alloys
U.S. Mallik,V. Sampath +1 more
TL;DR: In this paper, a linear regression analysis was performed on four sets of Cu-Al-Mn shape memory alloys, in the range of 10-15% of aluminum and 0-10% of manganese, by ingot metallurgy.