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Study on Reduction Roast and Magnetic Separation Process of Mixed Rare Earth Concentrate AITranslate

LI Kai; TIAN Jie; LI Mei; GAO Kai; ZHANG Dong-liang
Key Laboratories of the Ministry of Education of Light Rare Earth Resources Green Extraction and Efficient Use,Inner Mongolia University of Science and Technology;Key Laboratories of the Ministry of Education of Light Rare Earth Resources Green Extraction and Efficient Use,Inner Mongolia University of Science and Technology;Key Laboratories of the Ministry of Education of Light Rare Earth Resources Green Extraction and Efficient Use,Inner Mongolia University of Science and Technology;Key Laboratories of the Ministry of Education of Light Rare Earth Resources Green Extraction and Efficient Use,Inner Mongolia University of Science and Technology;Key Laboratories of the Ministry of Education of Light Rare Earth Resources Green Extraction and Efficient Use,Inner Mongolia University of Science and Technology
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Publisher: Editorial Office of Rare Metals and Cemented Carbides
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Abstract AITranslate

The reduction roasting technology was used to reduce the iron minerals in a mixed rare earth concentrate from Inner Mongolia to elemental metals,and then the magnetic separation technology was used for high efficient separation and enrichment of iron,rare earth,niobium and other elements.The effects of reduction temperature,roasting time and carbon content on the reduction roasting were investigated by single factor experiments,as well as the enrichment and recovery of rare earth and niobium at different roasting temperatures.Under the optimized conditions of roasting temperature of 1175℃,roasting time of 90 min and C/O ratio of 1.5,the iron metallization rate reaches 92.52%,the iron grade and recovery rate in magnetic materials are 89.71%and 92.12%,the niobium grade and recovery rate in non-magnetic materia-ls are 3.85%and 87.92%,and the rare earth grade and recovery rate are 7.15%and 88.23%,respectively.

KeyWords AITranslate

mixed rare earth concentrate reduction roasting metallization rate magnetic separation activated carbon

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Basic Information:

DOI：

Chinese Library Classification Number:TF111[冶金工程—冶金物理化学]

Citation Information:

The reduction roasting technology was used to reduce the iron minerals in a mixed rare earth concentrate from Inner Mongolia to elemental metals,and then the magnetic separation technology was used for high efficient separation and enrichment of iron,rare earth,niobium and other elements.The effects of reduction temperature,roasting time and carbon content on the reduction roasting were investigated by single factor experiments,as well as the enrichment and recovery of rare earth and niobium at different roasting temperatures.Under the optimized conditions of roasting temperature of 1175℃,roasting time of 90 min and C/O ratio of 1.5,the iron metallization rate reaches 92.52%,the iron grade and recovery rate in magnetic materials are 89.71%and 92.12%,the niobium grade and recovery rate in non-magnetic materia-ls are 3.85%and 87.92%,and the rare earth grade and recovery rate are 7.15%and 88.23%,respectively.

quote

GB/T 7714-2015 [1] LI Kai, TIAN Jie, LI Mei, et al. Study on Reduction Roast and Magnetic Separation Process of Mixed Rare Earth Concentrate[J]. Rare Metals and Cemented Carbides, 2020(3): 5-10.
MLA [1] LI Kai, et al., "Study on Reduction Roast and Magnetic Separation Process of Mixed Rare Earth Concentrate." Rare Metals and Cemented Carbides, no. 3, 2020, pp. 5-10.
APA [1] LI Kai, TIAN Jie, LI Mei, GAO Kai, & ZHANG Dong-liang. (2020). Study on Reduction Roast and Magnetic Separation Process of Mixed Rare Earth Concentrate. Rare Metals and Cemented Carbides(3), 5-10.
IEEE [1] LI Kai, TIAN Jie, LI Mei, GAO Kai, and ZHANG Dong-liang, "Study on Reduction Roast and Magnetic Separation Process of Mixed Rare Earth Concentrate," Rare Metals and Cemented Carbides, no. 3, pp. 5-10, 2020. keywords: {mixed rare earth concentrate;reduction roasting;metallization rate;magnetic separation;activated carbon}