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Study on Tungsten Extraction from Crystal Mother Liquor of Ammonium Paratungstate in N235/Isooctanol System AITranslate

LONG Yu-chen; ZHANG Gui-qing; ZENG Li; WU Xin-sheng; LI Zhi-hua; QIN Jia-lin; GUAN Wen-juan; LI Qing-gang; CAO Zuo-ying; WU Sheng-xi
Metallurgical Separation Science and Engineering Laboratory,School of Metallurgy and Environment,Central South University;Metallurgical Separation Science and Engineering Laboratory,School of Metallurgy and Environment,Central South University;Metallurgical Separation Science and Engineering Laboratory,School of Metallurgy and Environment,Central South University;Metallurgical Separation Science and Engineering Laboratory,School of Metallurgy and Environment,Central South University;Metallurgical Separation Science and Engineering Laboratory,School of Metallurgy and Environment,Central South University;Metallurgical Separation Science and Engineering Laboratory,School of Metallurgy and Environment,Central South University;Metallurgical Separation Science and Engineering Laboratory,School of Metallurgy and Environment,Central South University;Metallurgical Separation Science and Engineering Laboratory,School of Metallurgy and Environment,Central South University;Metallurgical Separation Science and Engineering Laboratory,School of Metallurgy and Environment,Central South University;Metallurgical Separation Science and Engineering Laboratory,School of Metallurgy and Environment,Central South University
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Publisher: Editorial Office of Rare Metals and Cemented Carbides
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Abstract AITranslate

A new process for the extraction and recovery of tungsten from APT crystal mother liquor in N235/isooctanol system was proposed and studied.The effects of organic phase composition,feed pH,temperature and other factors on tungsten extraction were studied.The extraction and stripping isotherms were drawn.And the test of simulated multi-stage countercurrent extraction was conducted.The results show that high-fold enrichment and recovery of tungsten and efficient separation of SO42-and Cl-from the ammonium paratungstate crystal mother liquor can be achieved in the solvent extraction system of N235/isooctanol.When the acidified feed liquid with WO3content of 22.1g/L and pH value of 3.5is subjected to4-stage countercurrent extraction,1-stage washing and 2-stage stripping,and the organic phase consisting of 10%N235,20%isooctanol and sulfonated kerosene is used,the results are obtained as follows:WO3content in the raffinate is less than 0.02g/L,WO3recovery rate is higher than 99.5%,WO3content in the stripping solution is higher than 230g/L,and the removal rate of SO42-or Cl-is greater than 98.5%.

KeyWords AITranslate

crystal mother liquor of ammonium paratungstate tungsten recovery solvent extraction N235

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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:

A new process for the extraction and recovery of tungsten from APT crystal mother liquor in N235/isooctanol system was proposed and studied.The effects of organic phase composition,feed pH,temperature and other factors on tungsten extraction were studied.The extraction and stripping isotherms were drawn.And the test of simulated multi-stage countercurrent extraction was conducted.The results show that high-fold enrichment and recovery of tungsten and efficient separation of SO42-and Cl-from the ammonium paratungstate crystal mother liquor can be achieved in the solvent extraction system of N235/isooctanol.When the acidified feed liquid with WO3content of 22.1g/L and pH value of 3.5is subjected to4-stage countercurrent extraction,1-stage washing and 2-stage stripping,and the organic phase consisting of 10%N235,20%isooctanol and sulfonated kerosene is used,the results are obtained as follows:WO3content in the raffinate is less than 0.02g/L,WO3recovery rate is higher than 99.5%,WO3content in the stripping solution is higher than 230g/L,and the removal rate of SO42-or Cl-is greater than 98.5%.

quote

GB/T 7714-2015 [1] LONG Yu-chen, ZHANG Gui-qing, ZENG Li, et al. Study on Tungsten Extraction from Crystal Mother Liquor of Ammonium Paratungstate in N235/Isooctanol System[J]. Rare Metals and Cemented Carbides, 2021(1): 1-6.
MLA [1] LONG Yu-chen, et al., "Study on Tungsten Extraction from Crystal Mother Liquor of Ammonium Paratungstate in N235/Isooctanol System." Rare Metals and Cemented Carbides, no. 1, 2021, pp. 1-6.
APA [1] LONG Yu-chen, ZHANG Gui-qing, ZENG Li, WU Xin-sheng, LI Zhi-hua, QIN Jia-lin, GUAN Wen-juan, LI Qing-gang, CAO Zuo-ying, & WU Sheng-xi. (2021). Study on Tungsten Extraction from Crystal Mother Liquor of Ammonium Paratungstate in N235/Isooctanol System. Rare Metals and Cemented Carbides(1), 1-6.
IEEE [1] LONG Yu-chen, ZHANG Gui-qing, ZENG Li, WU Xin-sheng, LI Zhi-hua, QIN Jia-lin, GUAN Wen-juan, LI Qing-gang, CAO Zuo-ying, and WU Sheng-xi, "Study on Tungsten Extraction from Crystal Mother Liquor of Ammonium Paratungstate in N235/Isooctanol System," Rare Metals and Cemented Carbides, no. 1, pp. 1-6, 2021. keywords: {crystal mother liquor of ammonium paratungstate;tungsten;recovery;solvent extraction;N235}