Study on Morphology and Phase of Rare Polymetallic Mixed Concentrate during Roasting AITranslate
Abstract AITranslate
Carbothermal reduction process was used to roast rare polymetallic mixed concentrate, and XRD,SEM and EDS were used to study the changes in the morphology and phase of the mineral during roasting.The results show that during roasting at low and medium temperatures, the main changes in minerals are as follows: Fe metallization rate gradually rises, Fe in iron ore is reduced, Fe encapsulated in silicate mine-rals precipitates and forms elementary substance, and Nb, Mn and Ti associated with iron minerals form oxides, which are not reduced by carbon, while rare earth minerals are stable and non-reactive, except for the partial decomposition of bastnaesite.As the roasting temperature increases, elemental Fe and SiO2 react to form FeSi by carbothermal reduction, bastnaesite is gradually decomposed, ZrSiO4 begins to be pyrolyzed to form small particles of ZrO2,and other metal compounds are stable.
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Basic Information:
DOI：
Chinese Library Classification Number:TF802.67[冶金工程—有色金属冶金]
Citation Information:
Carbothermal reduction process was used to roast rare polymetallic mixed concentrate, and XRD,SEM and EDS were used to study the changes in the morphology and phase of the mineral during roasting.The results show that during roasting at low and medium temperatures, the main changes in minerals are as follows: Fe metallization rate gradually rises, Fe in iron ore is reduced, Fe encapsulated in silicate mine-rals precipitates and forms elementary substance, and Nb, Mn and Ti associated with iron minerals form oxides, which are not reduced by carbon, while rare earth minerals are stable and non-reactive, except for the partial decomposition of bastnaesite.As the roasting temperature increases, elemental Fe and SiO2 react to form FeSi by carbothermal reduction, bastnaesite is gradually decomposed, ZrSiO4 begins to be pyrolyzed to form small particles of ZrO2,and other metal compounds are stable.
quote
| GB/T 7714-2015 | [1] TIAN Jie, LI Mei, ZHANG Yu-xu, et al. Study on Morphology and Phase of Rare Polymetallic Mixed Concentrate during Roasting[J]. Rare Metals and Cemented Carbides, 2021(2): 15-19. |
| MLA | [1] TIAN Jie, et al., "Study on Morphology and Phase of Rare Polymetallic Mixed Concentrate during Roasting." Rare Metals and Cemented Carbides, no. 2, 2021, pp. 15-19. |
| APA | [1] TIAN Jie, LI Mei, ZHANG Yu-xu, LI Kai, & GAO Kai. (2021). Study on Morphology and Phase of Rare Polymetallic Mixed Concentrate during Roasting. Rare Metals and Cemented Carbides(2), 15-19. |
| IEEE | [1] TIAN Jie, LI Mei, ZHANG Yu-xu, LI Kai, and GAO Kai, "Study on Morphology and Phase of Rare Polymetallic Mixed Concentrate during Roasting," Rare Metals and Cemented Carbides, no. 2, pp. 15-19, 2021. keywords: {rare metal;mixed concentrate;roasting;carbothermal reduction;morphology;phase} |