Effect of Temperature on Selective Reduction of Fe and Nb in Carbon-matched Pellets of Niobium Concentrate AITranslate
Abstract AITranslate
The feasibility was explored of selective reduction of niobium concentrate,and the effect was studied of temperature on the selective reduction of iron and niobium in carbon-matched pellets of niobium concentrate,as well as the occurrence states of iron-bearing phases and niobium-bearing phases in the reduction process.The results show that as the reduction temperature of niobium concentrate increases,the reduction metallization rate of iron minerals also increases.When the reaction temperature is 1050℃,the hematite in the niobium concentrate can be effectively reduced to metallic iron.However,there is still a certain amount of iron olivine in the reduction product,resulting in a reduction metallization rate of only 76.16%.CO content of the reducing atmosphere inside carbon-matched pellets of niobium concentrate is around 72.4%,which is significantly lower than 99%,the theoretical equilibrium value of carbon gasification.During the reduction process,niobium minerals remain in an oxygen-bearing state,which is beneficial to the subsequent separation of iron and niobium.The technological expectation of selective reduction of iron and niobium in niobium concentrate can be realized.
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Basic Information:
DOI：
Chinese Library Classification Number:TF841.6[冶金工程—有色金属冶金]
Citation Information:
The feasibility was explored of selective reduction of niobium concentrate,and the effect was studied of temperature on the selective reduction of iron and niobium in carbon-matched pellets of niobium concentrate,as well as the occurrence states of iron-bearing phases and niobium-bearing phases in the reduction process.The results show that as the reduction temperature of niobium concentrate increases,the reduction metallization rate of iron minerals also increases.When the reaction temperature is 1050℃,the hematite in the niobium concentrate can be effectively reduced to metallic iron.However,there is still a certain amount of iron olivine in the reduction product,resulting in a reduction metallization rate of only 76.16%.CO content of the reducing atmosphere inside carbon-matched pellets of niobium concentrate is around 72.4%,which is significantly lower than 99%,the theoretical equilibrium value of carbon gasification.During the reduction process,niobium minerals remain in an oxygen-bearing state,which is beneficial to the subsequent separation of iron and niobium.The technological expectation of selective reduction of iron and niobium in niobium concentrate can be realized.
quote
| GB/T 7714-2015 | [1] ZHANG Fu-shun, ZHAO Zeng-wu, LI Yan, et al. Effect of Temperature on Selective Reduction of Fe and Nb in Carbon-matched Pellets of Niobium Concentrate[J]. Rare Metals and Cemented Carbides, 2020(6): 14-19. |
| MLA | [1] ZHANG Fu-shun, et al., "Effect of Temperature on Selective Reduction of Fe and Nb in Carbon-matched Pellets of Niobium Concentrate." Rare Metals and Cemented Carbides, no. 6, 2020, pp. 14-19. |
| APA | [1] ZHANG Fu-shun, ZHAO Zeng-wu, LI Yan, & DU Zhi-yu. (2020). Effect of Temperature on Selective Reduction of Fe and Nb in Carbon-matched Pellets of Niobium Concentrate. Rare Metals and Cemented Carbides(6), 14-19. |
| IEEE | [1] ZHANG Fu-shun, ZHAO Zeng-wu, LI Yan, and DU Zhi-yu, "Effect of Temperature on Selective Reduction of Fe and Nb in Carbon-matched Pellets of Niobium Concentrate," Rare Metals and Cemented Carbides, no. 6, pp. 14-19, 2020. keywords: {niobium concentrate;carbon-matched pellet;carbothermal reduction;iron and niobium separation;metallization rate;phase transition;CO partial pressure} |