Coupling leaching of sphalerite concentrate

Studies on coupling process of sphalerite concentrate leaching in H 2SO 4–HNO 3 and tetrachloroethylene extracting of sulfur were reported. Mechanism of coupling leaching and effects of adding amounts of C 2Cl 4, temperature and liquid-to-solid ratio on leaching process were investigated separately....

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Bibliographic Details
Published in:Minerals engineering 2005-04, Vol.18 (5), p.553-555
Main Authors: Peng, Peng, Xie, Huiqin, Lu, Lizhu
Format: Article
Language:English
Subjects:
Hydrometallurgy
Leaching
Sulphide ores
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Summary:Studies on coupling process of sphalerite concentrate leaching in H 2SO 4–HNO 3 and tetrachloroethylene extracting of sulfur were reported. Mechanism of coupling leaching and effects of adding amounts of C 2Cl 4, temperature and liquid-to-solid ratio on leaching process were investigated separately. The results indicated that the zinc recovery was up to 99.6% after 3 h of leaching at 85 °C, 0.1 MPa O 2, with 20 g sphalerite concentrate in 200 ml leaching solution of 2.0 mol/l H 2SO 4 and 0.2 mol/l HNO 3, in the presence of 10 ml C 2Cl 4. The leaching time was 50% shorter than the common leaching. The coupling effect was distinct.
ISSN:0892-6875
1872-9444
DOI:10.1016/j.mineng.2004.08.012