Optimization of extraction of silver from silver sulphide concentrates by thiosulphate leaching

A novel method of extracting silver from silver sulphide concentrates is provided in this study. The method is selective for silver in the presence of 1.0 M of thiosulphate solution with acetic acid-ammonium acetate buffer at pH 4.15. The conditions are calculated using related equilibria constants and then tested with experiments. (C) 2005 Elsevier Ltd. All rights reserved