Manganese leaching in high concentration flue gas desulfurization process with semi-oxidized manganese ore

作     者：Dong Sun Guangzhi Xin Lu Yao Lin Yang Xia Jiang Wenju Jiang Dong Sun;Guangzhi Xin;Lu Yao;Lin Yang;Xia Jiang;Wenju Jiang

作者机构：College of Architecture and EnvironmentSichuan UniversityChengdu 610065China National Engineering Research Center for Flue Gas DesulfurizationChengdu 610065China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2020年第28卷第2期

页      面：571-578页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 080602[工学-钢铁冶金] 08[工学] 0806[工学-冶金工程] 

基　　金：the funding support by National Key Research and Development Program of China(No.2018YFC0213405) 

主　　题：Semi-oxidized manganese ore Flue gas desulfurization Manganese leaching Kinetics study 

摘      要：Manganese leaching during high concentration flue gas desulfurization process with semi-oxidized manganese ore was studied in this *** was found that there were different reaction pathways among which MnO2,Mn2O3 and MnCO3 in semi-oxidized manganese ore during flue gas desulphurization and manganese *** SO2 concentration facilitated redox reaction between MnO2 and SO2,and high concentration of H2SO4 accelerated MnCO3/Mn2O3 leaching from semi-oxidized *** study showed that manganese leaching in flue gas desulfurization process with semi-oxidized ore was controlled by a mixed-control model,that is the surface chemical reaction and mass diffusion dominated both the oxidation of SO2 and manganese leaching *** apparent activation energy was 13.05 k J·mol-1 and the reaction orders with respect to SO2 and H2SO4 concentration were 1.38 and 0.10,***,a semi-empirical rate equation based on shrinking core model was derived to describe the process.