Solvent extraction of zinc from zinc sulfate solution

Huai-zhong Long; Li-yuan Chai; Wen-qing Qin; Shuang-hua Tang

doi:10.1007/s11771-010-0553-x

Journal of Central South University ›› 2010, Vol. 17 ›› Issue (4) : 760 -764. DOI: 10.1007/s11771-010-0553-x

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Solvent extraction of zinc from zinc sulfate solution

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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.

Keywords

zinc sulfate solution / saponified bi(2-ethylhexyl) phosphoric acid (D2EHPA) / zinc / solvent extraction

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Huai-zhong Long, Li-yuan Chai, Wen-qing Qin, Shuang-hua Tang. Solvent extraction of zinc from zinc sulfate solution. Journal of Central South University, 2010, 17(4): 760-764 DOI:10.1007/s11771-010-0553-x

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