Study on Deep Chromium Removal by Magnesium Salt Coprecipitation and WO3 Recovery AITranslate
Abstract AITranslate
The process of deep chromium removal from Na2WO4 solution by reductive hydrolysis-magnesium salt coprecipitation was studied,and the separation of tungsten from chromium in chromium magnesium slag was realized by once alkali leaching.The results show that after adding 3 times the theoretical amount of Na2S at 70℃,controlling the pH value at 8~9 for 0.5 h,adding 1%MgSO4 solution to continue the reaction for 0.5 h,and then filtrating,the ratio of Cr content to WO3 content in the filtrate is less than 1.6×10^-4.When the final alkalinity of chromium magnesium slag leaching is controlled at 30~40 g/L,WO3 recovery is more than 96%,and the ratio of Cr content to WO3 content in the leaching solution is less than 1.6×10^-4.
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Basic Information:
DOI：
Chinese Library Classification Number:TF803.25[冶金工程—有色金属冶金]
Citation Information:
The process of deep chromium removal from Na2WO4 solution by reductive hydrolysis-magnesium salt coprecipitation was studied,and the separation of tungsten from chromium in chromium magnesium slag was realized by once alkali leaching.The results show that after adding 3 times the theoretical amount of Na2S at 70℃,controlling the pH value at 8~9 for 0.5 h,adding 1%MgSO4 solution to continue the reaction for 0.5 h,and then filtrating,the ratio of Cr content to WO3 content in the filtrate is less than 1.6×10^-4.When the final alkalinity of chromium magnesium slag leaching is controlled at 30~40 g/L,WO3 recovery is more than 96%,and the ratio of Cr content to WO3 content in the leaching solution is less than 1.6×10^-4.
quote
| GB/T 7714-2015 | [1] LEI Yin-chun, OU-YANG Hai-bo, CAO Yu-long, et al. Study on Deep Chromium Removal by Magnesium Salt Coprecipitation and WO3 Recovery[J]. Rare Metals and Cemented Carbides, 2019(6): 1-4. |
| MLA | [1] LEI Yin-chun, et al., "Study on Deep Chromium Removal by Magnesium Salt Coprecipitation and WO3 Recovery." Rare Metals and Cemented Carbides, no. 6, 2019, pp. 1-4. |
| APA | [1] LEI Yin-chun, OU-YANG Hai-bo, CAO Yu-long, LONG Yang, & ZHAO Ling-ping. (2019). Study on Deep Chromium Removal by Magnesium Salt Coprecipitation and WO3 Recovery. Rare Metals and Cemented Carbides(6), 1-4. |
| IEEE | [1] LEI Yin-chun, OU-YANG Hai-bo, CAO Yu-long, LONG Yang, and ZHAO Ling-ping, "Study on Deep Chromium Removal by Magnesium Salt Coprecipitation and WO3 Recovery," Rare Metals and Cemented Carbides, no. 6, pp. 1-4, 2019. keywords: {Na2WO4 solution;chromium removal;magnesium salt;coprecipitation;chromium magnesium slag;alkali leaching} |