Recovery of zinc from low-grade zinc oxide ores by solvent extraction

被引：21

作者：

Qin, WQ ^{[1
]}

Lan, ZY ^{[1
]}

Li, WZ ^{[1
]}

机构：

[1] Cent S Univ, Sch Resource Proc & Bioengn, Changsha 410083, Peoples R China

来源：

JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2003年 / 10卷 / 02期

关键词：

zinc; low-grade zinc oxide ores; heap leaching; solvent extraction;

D O I：

10.1007/s11771-003-0047-1

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The recovery of zinc from low-grade zinc oxide ores with solvent extraction-electrowinning technique was investigated by using D2EHPA as extractant and 260(#) kerosene as diluent. The results show that it is possible to selectively leach zinc from the ores by heap leaching. The zinc concentration of leach solution in the first leaching cycle is 32. 57 g/L, and in the sixteenth cycle the zinc concentration is 8. 27g/L after solvent extraction. The leaching solution is subjected to solvent extraction, scrubbing and selective stripping for enrichment of zinc and removal of impurities. The pregnant zinc sulfate solution produced from the stripping cycle is suitable for zinc electrowinning. Extra-pure zinc metal was obtained in the electrowinning test under conventional conditions.

引用

页码：98 / 102

页数：5

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