Solvent extraction of zinc from zinc sulfate solution |
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| Authors: | Huai-zhong Long Li-yuan Chai Wen-qing Qin and Shuang-hua Tang |
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| Affiliation: | [1]School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China [2]School of Resources Processing and Bioengineering, Central South University, Changsha 410083, China |
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| Abstract: | The extraction of zinc from zinc sulfate solution was investigated, using 20% saponified D2EHPA as an extractant and 260# sulfonate kerosene as a diluent. The solution was stirred for 8 min at phase ratio (V
o/V
a) of 1.0:1.0, initial pH of 2.0 and stirring speed of 200 r/min. The results show that 75% zinc can be extracted from the
zinc sulfate solution when the concentration of zinc is 18.7 g/L after being settled for 10 min. 88.60% zinc can be stripped
by 196 g/L sulfuric acid, and zinc ion can be separated from ferric ion. |
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| Keywords: | zinc sulfate solution saponified bi（2-ethylhexyl） phosphoric acid （D2EHPA） zinc solvent extraction |
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