Behavior of S₂O₃^2- and SO₃^2- in sulfur-bearing aqueous solution system for gold leaching

来源期刊：中国有色金属学报(英文版)2010年增刊第1期

论文作者：陈向阳 兰新哲 张秋利 周军 宋永辉

文章页码：46 - 49

Key words：sulfur-bearing system; gold leaching; thermodynamics

Abstract: The concentrations of S₂O₃^2- and SO₃^2- were measured in gold leaching systems, including thiosulfate system, polysulfide system and the modified lime sulfur synthetic solution (ML) system in the process of chemical reaction. The interactions among S₂O₃^2-, SO₃^2- and S^2- were discussed. The behavior mechanism of sulfur-bearing reagents was proposed to describe the process reactions and their Gibbs free energy. The proper quantity oxygen and SO₃^2- reduce decomposition of S₂O₃^2- and react with sulfur derived from the decomposition of S_X^2-. So, SO₃^2- ions have action to stabilize sulfur-bearing system and are favorable to leach gold.

基金信息：“13115” Science and Technique Innovation Program of Shaanxi Province, China
Educational Commission of Shaanxi Province of China