Separation of copper and zinc from complex sulphate solutions by using LIX84

Kumar, Vinay and Bagchi, D and Pandey, B D (1997) Separation of copper and zinc from complex sulphate solutions by using LIX84. Scandinavian Journal of Metallurgy, 26 (2). pp. 74-78.

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Background/purpose: For exploitation of the neglected/discarded lean grade and complex deposits through the hydrometallurgical process,solvent extraction is being widely used to separate and recover the metals from leach liquors. In order to study the separation of copper and zinc from sulphate solutions from such resources in the presence of gangue metals like iron and manganese, LIX84 has been considered for utilisation. Methods: Separation studies were carried out in a rectangular vessel of perspex with an impeller grooved at the bottom. The agitator speed of agitator was precisely controlled. The metal transfer from one phase to another was known by analysing the strip solution from the organic phase, and sometimes the aqueous phase as well. Results: The performance of LIX84 was compared with that of LIX64N under identical conditions for extraction-separation of Cu-Zn-Fe-Mn. In the acidic pH range of 0.7-3.9, LIX84 showed higher copper loading as compared to LIX64N. Improvement in separation factor for Cu-Zn was observed with the former solvent in the above pH range. LIX84 also exhibited better selectivity for extraction of copper in the presence of iron and manganese levels of 0.21 and 1.0 g/l. Conclusion: LIX84 showed excellent extraction/and separation characteristics for the Cu-Zn sulphate system, and could be advantageously used for the treatment of such liquors produced from complex Cu-Zn-Pb sulphide ores. (C) Munksgaard, 1997.

Item Type:Article
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Uncontrolled Keywords:Extraction
Divisions:Metal Extraction and Forming
ID Code:1078
Deposited By:Sahu A K
Deposited On:17 Jun 2010 09:48
Last Modified:03 Jan 2012 12:48
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