Dissolution kinetics of gold in moderate aqueous potassium iodide solutions with oxygen under pressure

被引：0
|
作者：
Meng, X [1 ]
Han, KN [1 ]
机构：
[1] S DAKOTA SCH MINES & TECHNOL,DEPT MET ENGN,RAPID CITY,SD
来源：
MINERALS AND METALLURGICAL PROCESSING | 1997年 / 14卷 / 02期
关键词：
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The kinetics of gold dissolution in iodide solutions with oxygen in an autoclave was investigated. The leaching process was described by a gas-liquid-solid heterogeneous reaction. The effects of stirring speed, temperature, oxygen partial pressure and lixiviant concentrations on the overall leaching rare was investigated. It was found that the dissolution of gold could be represented by a heterogeneous chemical reaction. Under the conditions studied, the apparent activation energy ranged from 34.7 to 54.3 kJ/mol. Experimental findings were in good agreement with the kinetic model proposed.
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页码：1 / 9
页数：9
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