Recovery of Molybdenum and Vanadium from Alkaline Leaching Solution of Spent Catalyst by Crystallization Precipitation AITranslate
Abstract AITranslate
Alkaline treatment of spent hydrogenation catalyst has been widely studied and applied for its advantages of mild reaction condition,high metal recovery and simple composition of leaching solution.In order to improve the purity and recovery of molybdenum and vanadium in the products,the separation and recovery of molybdenum and vanadium from alkaline leaching solution are very important.The precipita-tion recovery process of molybdenum and vanadium in alkaline solution was studied in detail,and the effects of the precipitant dosage and pH value on the precipitation rate of molybdenum and vanadium in alkaline solution were investigated by thermodynamic calculation and condition experiments.The experimental results show that the pH value and the amount of precipitants have a great influence on the precipitation rates of molybdenum and vanadium,and the influence law is roughly consistent with the theoretical calculation result.Under the optimal reaction conditions,the precipitation rates of molybdenum and vanadium can reach 93%and 94%,respectively.NH4Cl and BaCl2 are used to separate Mo-V alkaline mixed solution by step-by-step precipitation,and 93.6%vanadium and 92.4%molybdenum can be respectively recovered by one-step precipitation separation.However,there is co-precipitation phenomenon of molybdenum and vanadium.After multiple dissolution and precipitation separation,the products with high purity can be obtained.
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DOI：
Chinese Library Classification Number:TF111[冶金工程—冶金物理化学]
Citation Information:
Alkaline treatment of spent hydrogenation catalyst has been widely studied and applied for its advantages of mild reaction condition,high metal recovery and simple composition of leaching solution.In order to improve the purity and recovery of molybdenum and vanadium in the products,the separation and recovery of molybdenum and vanadium from alkaline leaching solution are very important.The precipita-tion recovery process of molybdenum and vanadium in alkaline solution was studied in detail,and the effects of the precipitant dosage and pH value on the precipitation rate of molybdenum and vanadium in alkaline solution were investigated by thermodynamic calculation and condition experiments.The experimental results show that the pH value and the amount of precipitants have a great influence on the precipitation rates of molybdenum and vanadium,and the influence law is roughly consistent with the theoretical calculation result.Under the optimal reaction conditions,the precipitation rates of molybdenum and vanadium can reach 93%and 94%,respectively.NH4Cl and BaCl2 are used to separate Mo-V alkaline mixed solution by step-by-step precipitation,and 93.6%vanadium and 92.4%molybdenum can be respectively recovered by one-step precipitation separation.However,there is co-precipitation phenomenon of molybdenum and vanadium.After multiple dissolution and precipitation separation,the products with high purity can be obtained.
quote
| GB/T 7714-2015 | [1] GUAN Yue-ming, ZHANG Cheng, YUAN Sheng-hua, et al. Recovery of Molybdenum and Vanadium from Alkaline Leaching Solution of Spent Catalyst by Crystallization Precipitation[J]. Rare Metals and Cemented Carbides, 2021(6): 9-14. |
| MLA | [1] GUAN Yue-ming, et al., "Recovery of Molybdenum and Vanadium from Alkaline Leaching Solution of Spent Catalyst by Crystallization Precipitation." Rare Metals and Cemented Carbides, no. 6, 2021, pp. 9-14. |
| APA | [1] GUAN Yue-ming, ZHANG Cheng, YUAN Sheng-hua, LIU Mei, & DING Wei. (2021). Recovery of Molybdenum and Vanadium from Alkaline Leaching Solution of Spent Catalyst by Crystallization Precipitation. Rare Metals and Cemented Carbides(6), 9-14. |
| IEEE | [1] GUAN Yue-ming, ZHANG Cheng, YUAN Sheng-hua, LIU Mei, and DING Wei, "Recovery of Molybdenum and Vanadium from Alkaline Leaching Solution of Spent Catalyst by Crystallization Precipitation," Rare Metals and Cemented Carbides, no. 6, pp. 9-14, 2021. keywords: {spent hydrogenation catalyst;vanadium;molybdenum;alkaline solution;thermodynamic calculation;crystal precipitation} |