Recovery of Sodium Carbonate from Sodium Tungstate Solution by Freezing Crystallization AITranslate
Abstract AITranslate
The freezing crystallization method was adopted to recover sodium carbonate in the sodium tungstate liquid,achieving the reuse of sodium carbonate as the production raw material and reducing the discharge of salty wastewater.The effects of liquid concentration,freezing temperature,freezing time and seed crystal addition amount on the freezing crystallization process were studied.The results show that when the simulated leaching liquid containing 200g/L WO3and 200g/L Na2CO3is processed,Na2CO3crystallization rate reaches 75%and WO3loss rate is only 1.9%under the conditions of freezing time of 2h,freezing temperature of 4~5℃and seed crystal addition amount of 0.5%.Under the above conditions,the actual leaching liquid containing 200g/L WO3and 200g/L Na2CO3and obtained by Na2CO3pressure lea-ching of low-grade tungsten ore is processed,and Na2CO3crystallization rate is 74%and WO3loss rate is 6.6%.When Na2CO3recovered by freezing crystallization is returned to the pressure leaching process of tungsten ore,the obtained leaching residue contains 0.52%WO3,and the leaching rate is up to 94.99%,which can meet the requirements of industrial recycling production.
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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:
The freezing crystallization method was adopted to recover sodium carbonate in the sodium tungstate liquid,achieving the reuse of sodium carbonate as the production raw material and reducing the discharge of salty wastewater.The effects of liquid concentration,freezing temperature,freezing time and seed crystal addition amount on the freezing crystallization process were studied.The results show that when the simulated leaching liquid containing 200g/L WO3and 200g/L Na2CO3is processed,Na2CO3crystallization rate reaches 75%and WO3loss rate is only 1.9%under the conditions of freezing time of 2h,freezing temperature of 4~5℃and seed crystal addition amount of 0.5%.Under the above conditions,the actual leaching liquid containing 200g/L WO3and 200g/L Na2CO3and obtained by Na2CO3pressure lea-ching of low-grade tungsten ore is processed,and Na2CO3crystallization rate is 74%and WO3loss rate is 6.6%.When Na2CO3recovered by freezing crystallization is returned to the pressure leaching process of tungsten ore,the obtained leaching residue contains 0.52%WO3,and the leaching rate is up to 94.99%,which can meet the requirements of industrial recycling production.
quote
| GB/T 7714-2015 | [1] YI Xin-tao, LIANG Hong-fei, HUO Guang-sheng, et al. Recovery of Sodium Carbonate from Sodium Tungstate Solution by Freezing Crystallization[J]. Rare Metals and Cemented Carbides, 2020(6): 1-4. |
| MLA | [1] YI Xin-tao, et al., "Recovery of Sodium Carbonate from Sodium Tungstate Solution by Freezing Crystallization." Rare Metals and Cemented Carbides, no. 6, 2020, pp. 1-4. |
| APA | [1] YI Xin-tao, LIANG Hong-fei, HUO Guang-sheng, PU Hai-peng, & ZENG Lu-qi. (2020). Recovery of Sodium Carbonate from Sodium Tungstate Solution by Freezing Crystallization. Rare Metals and Cemented Carbides(6), 1-4. |
| IEEE | [1] YI Xin-tao, LIANG Hong-fei, HUO Guang-sheng, PU Hai-peng, and ZENG Lu-qi, "Recovery of Sodium Carbonate from Sodium Tungstate Solution by Freezing Crystallization," Rare Metals and Cemented Carbides, no. 6, pp. 1-4, 2020. keywords: {sodium tungstate solution;sodium carbonate;freezing crystallization;recycling;low-grade tungsten ore} |