Molybdenum removal from copper ore concentrate by sodium hypochlorite leaching

被引：0
|
作者：
Liu Youcai
机构：
来源：
International Journal of Mining Science and Technology | 2011年 / 21卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Wet leaching; Copper concentrate; Molybdenum; Kinetic; Sodium hypochlorite;
D O I：
暂无
中图分类号：
X703 [废水的处理与利用];
学科分类号：
083002 ;
摘要：
The removal of molybdenum from a copper ore concentrate by sodium hypochlorite leaching was investigated. The results show that leaching time,liquid to solid ratio,leaching temperature,agitation speed,and sodium hypochlorite and sodium hydroxide concentrations all have a significant effect on the removal of molybdenum.The optimum process operating parameters were found to be:time,4 h;sodium hydroxide concentration,10%;sodium hypochlorite concentration,8%;liquid to solid ratio,10:1;temperature,50℃;and, agitation speed,500 r/min.Under these conditions the extraction of molybdenum is greater than 99,9%and the extraction of copper is less than 0.01%.A shrinking particle model could be used to describe the leaching process.The apparent activation energy of the dissolution reaction was found to be approximately 8.8 kJ/mol.
引用
收藏
页码：61 / 64
页数：4
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