Zinc extraction from zinc oxidized ore using(NH4)2SO4 roasting−leaching process

作     者：Xiao-yi Shen Hong-mei Shao Ji-wen Ding Yan Liu Hui-min Gu Yu-chun Zhai Xiao-yi Shen;Hong-mei Shao;Ji-wen Ding;Yan Liu;Hui-min Gu;Yu-chun Zhai

作者机构：Key Laboratory for Ecological Utilization of Multimetallic Mineral of Ministry of EducationSchool of MetallurgyNortheastern UniversityShenyang 110819China School of Environmental and Chemical EngineeringShenyang Ligong UniversityShenyang 110159China School of Computer Science and EngineeringNortheastern UniversityShenyang 110819China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2020年第27卷第11期

页      面：1471-1481页

核心收录：

学科分类：080603[工学-有色金属冶金] 08[工学] 0806[工学-冶金工程] 

基　　金：This work was financially supported by the National Natural Science Foundation of China(Nos.51774070,52004165,and 51574084) and the National Key Research and Development Program of China(No.2017YFB 0305401) 

主　　题：zinc oxidized ore ammonium sulfate roasting,water leaching kinetics mechanism extraction ratio 

摘      要：An improved method of(NH4)2SO4 roasting followed by water leaching to utilize zinc oxidized ores was *** operating parameters were obtained by investigating the effects of the molar ratio of(NH4)2SO4 to zinc,roasting temperature,and holding time on zinc *** roasting process followed the chemical reaction control mechanism with the apparent activation energy value of 41.74 kJ·mol^−*** transformation of mineral phases in roasting was identified by X-ray diffraction analysis combined with thermogravimetry–differential thermal analysis *** water leaching conditions,including the leaching temperature,leaching time,stirring velocity,and liquid-to-solid ratio,were discussed,and the leaching kinetics was *** reaction rate was obtained under outer diffusion without product layer control;the values of the apparent activation energy for two stages were 4.12 and 8.19 kJ·mol^−*** maximum zinc extraction ratio reached 96%while the efficiency of iron extraction was approximately 32%under appropriate *** work offers an effective method for the comprehensive use of zinc oxidized ores.