Kinetics and Modeling of Chemical Leaching of Sphalerite Concentrate Using Ferric Iron in a Redox-controlled Reactor

doi:10.1016/S1004-9541(13)60545-5

Chin.J.Chem.Eng. ›› 2013, Vol. 21 ›› Issue (8): 933-936.DOI: 10.1016/S1004-9541(13)60545-5

Kinetics and Modeling of Chemical Leaching of Sphalerite Concentrate Using Ferric Iron in a Redox-controlled Reactor

SONG Jian^1,2, GAO Ling³, LIN Jianqun¹, WU Hongbin⁴, LIN Jianqiang¹

1 State Key Lab of Microbial Technology, Shandong University, Jinan 250100, China;
2 Department of Pharmacy and Biotechnology, Zibo Vocational Institute, Zibo 255314, China;
3 Shandong Provincial Key Lab for Distributed Computer Software Novel Technology, School of Information Science and Engineering, Shandong Normal University, Jinan 250014, China;
4 Institute of Agro-products Processing Science and Technology, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi 832000, China

Received:2012-07-23 Revised:2013-02-10 Online:2013-08-24 Published:2013-08-28
Supported by:
Supported by the National Basic Research Program (2010CB630902, 2004CB619202), the National Natural Science Foundation of China (31070034, 30800011, 31260396), the Knowledge Innovation Program of CAS (2AKSCX2-YW-JS401), and the Reward Fund for Young Scientists of Shandong Province (2007BS08002) of China.

Kinetics and Modeling of Chemical Leaching of Sphalerite Concentrate Using Ferric Iron in a Redox-controlled Reactor

宋健^1,2, 高玲³, 林建群¹, 吴洪斌⁴, 林建强¹

1 State Key Lab of Microbial Technology, Shandong University, Jinan 250100, China;
2 Department of Pharmacy and Biotechnology, Zibo Vocational Institute, Zibo 255314, China;
3 Shandong Provincial Key Lab for Distributed Computer Software Novel Technology, School of Information Science and Engineering, Shandong Normal University, Jinan 250014, China;
4 Institute of Agro-products Processing Science and Technology, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi 832000, China

通讯作者: GAO Ling
基金资助:
Supported by the National Basic Research Program (2010CB630902, 2004CB619202), the National Natural Science Foundation of China (31070034, 30800011, 31260396), the Knowledge Innovation Program of CAS (2AKSCX2-YW-JS401), and the Reward Fund for Young Scientists of Shandong Province (2007BS08002) of China.

Abstract

Abstract: 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.

Key words: sphalerite, leaching, kinetic model, Fe³⁺ concentration, redox potential, LabVIEW

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.

关键词: sphalerite, leaching, kinetic model, Fe³⁺ concentration, redox potential, LabVIEW

SONG Jian, GAO Ling, LIN Jianqun, WU Hongbin, LIN Jianqiang. Kinetics and Modeling of Chemical Leaching of Sphalerite Concentrate Using Ferric Iron in a Redox-controlled Reactor[J]. Chin.J.Chem.Eng., 2013, 21(8): 933-936.

宋健, 高玲, 林建群, 吴洪斌, 林建强. Kinetics and Modeling of Chemical Leaching of Sphalerite Concentrate Using Ferric Iron in a Redox-controlled Reactor[J]. Chinese Journal of Chemical Engineering, 2013, 21(8): 933-936.

References

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Kinetics and Modeling of Chemical Leaching of Sphalerite Concentrate Using Ferric Iron in a Redox-controlled Reactor

Kinetics and Modeling of Chemical Leaching of Sphalerite Concentrate Using Ferric Iron in a Redox-controlled Reactor

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