Purification of Gold from Chloride Leach Liquor of Copper Anode Slime by Octanol-Kerosene Organic Extractant

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Amirkabir University of Technology, Tehran, Iran

Abstract

In the present study, the copper anode slime was leached in chloride media. Then, pregnant leach solution (PLS) was purified using solvent extraction method and Octanol-kerosene solution. HAuCl4.2L was determined as the extracted macromolecule, and separation of impurities, such as copper, iron and selenium was done in the presence of gold. McCabe-Thiele diagram of Au–HCl (3 M)– Octanol (40% v/v) in O/A=3/4 showed that Au concentration in aqueous phase decreased from the initial value of 200 to 7 mg/L, after 5 stages. Ammonia solution was proposed as the stripper and McCabe-Thiele diagram was presented to obtain the number of gold stripping steps by ammonia solution

Keywords

Journal of Advanced Materials in Engineering (Esteghlal)
Volume 34, Issue 2
July 2015
Pages 71-78

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