Influencing factors of pyrite leaching in germ-free system

被引：6
|
作者：
Ou Le-ming [1 ]
He Rong-quan [1 ]
Feng Qi-ming [1 ]
机构：
[1] Cent S Univ, Sch Resources Proc & Bioengn, Changsha 410083, Peoples R China
来源：
JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2007年 / 14卷 / 01期
基金：
中国国家自然科学基金;
关键词：
pyrite; leaching rate; mineral particle size; pulp potential; oxidant;
D O I：
10.1007/s11771-007-0006-3
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The effect of mineral particle size, pulp potential and category of oxidant on pyrite leaching was studied. The results show that a smaller mineral particle size leads to a higher leaching rate of pyrite, and the optimum result with pyrite leaching rate of 2.92% is obtained when mineral particle size is less than 0.037 mm. The pulp potential reflects the leaching process. The increase of pulp potential can improve pyrite leaching. The leaching rate and velocity of pyrite can be enhanced rapidly by adding strong oxidant. The kind and the method of adding oxidant have important effect on the pyrite leaching. Appropriate concentration of Fe3+ can enhance pyrite leaching but the precipitation generated by high concentration of ferric ion covers the surface of pyrites and prevents the leaching process. The leaching rate increases with the constant addition of H2O2.
引用
收藏
页码：28 / 31
页数：4
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