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

作　　者：宋健 高玲 林建群 吴洪斌 林建强 

机构地区：[1]State Key Lab of Microbial Technology,Shandong University [2]Department of Pharmacy and Biotechnology,Zibo Vocational Institute [3]Shandong Provincial Key Lab for Distributed Computer Software Novel Technology,School of Information Science and Engineering,Shandong Normal University [4]Institute of Agro-products Processing Science and Technology,Xinjiang Academy of Agricultural and Reclamation Science

出　　处：《Chinese Journal of Chemical Engineering》2013年第8期933-936,共4页中国化学工程学报（英文版）

基　　金：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）; the Reward Fund for Young Scientists of Shandong Province （2007BS08002） of China

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.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 

分 类 号：O643.1[理学—物理化学] X703[理学—化学]