Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9632487 | Hydrometallurgy | 2005 | 7 Pages |
Abstract
The enhanced leaching of sphalerite concentrates in H2SO4-HNO3 solutions and the extraction of sulfur with tetrachloroethylene were studied. Variables of the process were investigated including leaching temperature, reaction time, liquid / solid ratio, and tetrachloroethylene concentration. The number of cycles that tetrachloroethylene could be recycled did not have a significant effect on zinc extraction. The results indicated that 99.6% zinc extraction was obtained after three hours of leaching at 85 °C and 0.1 MPa O2, when 20 g of sphalerite concentrate were leached in a 200 ml solution containing 2.0 mol/L H2SO4 and 0.2 mol/L HNO3, in the presence of 10 ml C2Cl4. Leaching rates were significantly improved under these conditions.
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Authors
Peng Peng, Huiqin Xie, Lizhu Lu,