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
作者： Song Jian 1 ; Gao Ling 3 ; Lin Jianqun 1 ; Wu Hongbin 4 ; Lin Jianqiang 1 ;
作者机构： 1.Shandong Univ, State Key Lab Microbial Technol, Jinan 250100, Peoples R China
2.Zibo Vocat Inst, Dept Pharm & Biotechnol, Zibo 255314, Peoples R China
3.Shandong Normal Univ, Sch Informat Sci & Engn, Shandong Prov Key Lab Distributed Comp Software N, Jinan 250014, Peoples R China
4.Xinjiang Acad Agr & Reclamat Sci, Inst Agroprod Proc Sci & Technol, Shihezi 832000, Peoples R China
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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