Behavior of S2O32- and SO32- in sulfur-bearing aqueous solution system for gold leaching

被引：6

作者：

Chen Xiang-yang ^{[1
,2
]}

Lan Xin-zhe ^{[1
,2
]}

Zhang Qiu-li ^{[1
]}

Zhou Jun ^{[1
]}

Song Yong-hui ^{[1
]}

机构：

[1] Xian Univ Architecture & Technol, Sch Met Engn, Xian 710055, Peoples R China

[2] Xian Univ Architecture & Technol, Res Ctr Met Engn & Technol Shaanxi Prov, Xian 710055, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2010年 / 20卷

关键词：

sulfur-bearing system; gold leaching; thermodynamics;

D O I：

10.1016/S1003-6326(10)60010-6

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The concentrations of S2O32- and SO32- 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 S2O32-, SO32- and S2- 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 SO32- reduce decomposition of S2O32- and react with sulfur derived from the decomposition of S-X(2-). So, SO32- ions have action to stabilize sulfur-bearing system and are favorable to leach gold.

引用

页码：S46 / S49

页数：4

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