Kinetics and Modeling of Chemical Leaching of Sphalerite Concentrate Using Ferric Iron in a Redox-controlled Reactor
文献类型: 外文期刊
第一作者: Song Jian
作者: Song Jian;Lin Jianqun;Lin Jianqiang;Song Jian;Gao Ling;Wu Hongbin
作者机构:
关键词: sphalerite;leaching;kinetic model;Fe3+ concentration;redox potential;LabVIEW
期刊名称:CHINESE JOURNAL OF CHEMICAL ENGINEERING ( 影响因子:3.171; 五年影响因子:2.853 )
ISSN: 1004-9541
年卷期: 2013 年 21 卷 8 期
页码:
收录情况: SCI
摘要: This work presents a study for chemical leaching of sphalerite concentrate under various constant Fe3+ concentrations and redox potential conditions. The effects of Fe3+ concentration and redox potential on chemical leaching of sphalerite were investigated. The shrinking core model was applied to analyze the experimental results. It was found that both the Fe3+ concentration and the redox potential controlled the chemical leaching rate of sphalerite. A new kinetic model was developed, in which the chemical leaching rate of sphalerite was proportional to Fe3+ concentration and Fe3+/Fe2+ ratio. All the model parameters were evaluated from the experimental data. The model predictions fit well with the experimental observed values.
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