Study on Low Consumption Decomposition of Scheelite by Sodium Phosphate AITranslate
Abstract AITranslate
Scheelite is the main industrial raw material for tungsten smelting in China.Most of scheelite concentrates are obtained by flotation, and therefore a large number of organic flotation reagents remain in the concentrates, which can easily lead to overswelling phenomenon during subsequent hydrometallurgical smelting and bring adverse effects on production.At the same time, the traditional alkali pressure boiling process of scheelite is of low production efficiency, and there are certain safety risks.To solve the above problems, a new smelting process for decomposing scheelite through sodium phosphate roasting-water lea-ching-sodium phosphate crystallization cycle was proposed.The research results show that under the conditions of mass ratio of sodium phosphate to scheelite of 2∶1,roasting temperature of 700 ℃,roasting time of 2 h, water leaching temperature of 80 ℃,water leaching time of 2.5 h and water leaching liquid to solid ratio of 2.5∶1,the leaching rate of tungsten reaches 99.81%.The excess sodium phosphate in sodium tungstate solution can be crystallized by adding sodium hydroxide, the recovery rate of sodium phosphate can reach more than 97%,and the sodium phosphate can be recycled for the decomposition of scheelite concentrate.This process can effectively overcome the adverse effects of flotation reagents on traditional hydrometallurgical tungsten smelting, and efficiently improve the utilization rate of scheelite decomposition reagents.
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Basic Information:
DOI：
Chinese Library Classification Number:TF841.1[冶金工程—有色金属冶金]
Citation Information:
Scheelite is the main industrial raw material for tungsten smelting in China.Most of scheelite concentrates are obtained by flotation, and therefore a large number of organic flotation reagents remain in the concentrates, which can easily lead to overswelling phenomenon during subsequent hydrometallurgical smelting and bring adverse effects on production.At the same time, the traditional alkali pressure boiling process of scheelite is of low production efficiency, and there are certain safety risks.To solve the above problems, a new smelting process for decomposing scheelite through sodium phosphate roasting-water lea-ching-sodium phosphate crystallization cycle was proposed.The research results show that under the conditions of mass ratio of sodium phosphate to scheelite of 2∶1,roasting temperature of 700 ℃,roasting time of 2 h, water leaching temperature of 80 ℃,water leaching time of 2.5 h and water leaching liquid to solid ratio of 2.5∶1,the leaching rate of tungsten reaches 99.81%.The excess sodium phosphate in sodium tungstate solution can be crystallized by adding sodium hydroxide, the recovery rate of sodium phosphate can reach more than 97%,and the sodium phosphate can be recycled for the decomposition of scheelite concentrate.This process can effectively overcome the adverse effects of flotation reagents on traditional hydrometallurgical tungsten smelting, and efficiently improve the utilization rate of scheelite decomposition reagents.
quote
| GB/T 7714-2015 | [1] HE Bing-xuan, XU Lüe-wei, LEI Xin, et al. Study on Low Consumption Decomposition of Scheelite by Sodium Phosphate[J]. Rare Metals and Cemented Carbides, 2022(2): 1-7. |
| MLA | [1] HE Bing-xuan, et al., "Study on Low Consumption Decomposition of Scheelite by Sodium Phosphate." Rare Metals and Cemented Carbides, no. 2, 2022, pp. 1-7. |
| APA | [1] HE Bing-xuan, XU Lüe-wei, LEI Xin, HU Hao-dong, LIANG Yong, & LIU De-gang. (2022). Study on Low Consumption Decomposition of Scheelite by Sodium Phosphate. Rare Metals and Cemented Carbides(2), 1-7. |
| IEEE | [1] HE Bing-xuan, XU Lüe-wei, LEI Xin, HU Hao-dong, LIANG Yong, and LIU De-gang, "Study on Low Consumption Decomposition of Scheelite by Sodium Phosphate," Rare Metals and Cemented Carbides, no. 2, pp. 1-7, 2022. keywords: {scheelite;sodium phosphate;roasting;water leaching;common ion effect;cyclic utilization} |