Technical Study on Impurity Aluminum Removal from High-concentration Pr-NdCl3 Feed Solution(Ⅱ) AITranslate
Abstract AITranslate
High-concentration Pr-NdCl3 feed solution separated from Bayan Obo rare earth concentrate by smelting contains 0.10~0.34 g/L aluminum,and the aluminum content directly affects the quality of downstream products,so it is necessary to separate aluminum from rare earth.Based on the principle of preferential extraction of aluminum in naphthenic acid-isooctanol-sulfonated kerosene system,the non rare earth impurity aluminum can be removed from high-concentration Pr-NdCl3 feed solution by cascade extraction separation process.The pilot scale test was carried out based on the analysis and demonstration of the whole technological process and the cascade extraction and cascade washing process.The results show that after 30-stage cascade extraction separation process,the concentration of REO is more than 220 g/L,the content of aluminum impurity is greatly reduced,the mass ratio of Al2O3 to REO is less than 7.8×10-5,and the product quality meets the standard.The application of cascade extraction separation process not only optimizes and improves the existing single-stage extraction process,but also improves and stabilizes the product quality,having promotion value.
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Basic Information:
DOI：
Chinese Library Classification Number:TF845[冶金工程—有色金属冶金]
Citation Information:
High-concentration Pr-NdCl3 feed solution separated from Bayan Obo rare earth concentrate by smelting contains 0.10~0.34 g/L aluminum,and the aluminum content directly affects the quality of downstream products,so it is necessary to separate aluminum from rare earth.Based on the principle of preferential extraction of aluminum in naphthenic acid-isooctanol-sulfonated kerosene system,the non rare earth impurity aluminum can be removed from high-concentration Pr-NdCl3 feed solution by cascade extraction separation process.The pilot scale test was carried out based on the analysis and demonstration of the whole technological process and the cascade extraction and cascade washing process.The results show that after 30-stage cascade extraction separation process,the concentration of REO is more than 220 g/L,the content of aluminum impurity is greatly reduced,the mass ratio of Al2O3 to REO is less than 7.8×10-5,and the product quality meets the standard.The application of cascade extraction separation process not only optimizes and improves the existing single-stage extraction process,but also improves and stabilizes the product quality,having promotion value.
quote
| GB/T 7714-2015 | [1] MENG Zhi-jun, XU Yan-hui, GAO Tian-zuo, et al. Technical Study on Impurity Aluminum Removal from High-concentration Pr-NdCl3 Feed Solution(Ⅱ)[J]. Rare Metals and Cemented Carbides, 2021(4): 6-10. |
| MLA | [1] MENG Zhi-jun, et al., "Technical Study on Impurity Aluminum Removal from High-concentration Pr-NdCl3 Feed Solution(Ⅱ)." Rare Metals and Cemented Carbides, no. 4, 2021, pp. 6-10. |
| APA | [1] MENG Zhi-jun, XU Yan-hui, GAO Tian-zuo, GUAN Wei-hua, LI Yu, & MA Sheng-feng. (2021). Technical Study on Impurity Aluminum Removal from High-concentration Pr-NdCl3 Feed Solution(Ⅱ). Rare Metals and Cemented Carbides(4), 6-10. |
| IEEE | [1] MENG Zhi-jun, XU Yan-hui, GAO Tian-zuo, GUAN Wei-hua, LI Yu, and MA Sheng-feng, "Technical Study on Impurity Aluminum Removal from High-concentration Pr-NdCl3 Feed Solution(Ⅱ)," Rare Metals and Cemented Carbides, no. 4, pp. 6-10, 2021. keywords: {Pr-NdCl3 feed solution;aluminum;naphthenic acid;cascade extraction;washing;stripping;process optimization} |