Recovery of gallium from zinc concentrate by pressure oxygen leaching  

作　　者：Xue-Lan Wu Wen-Qing Qin Shun-Ke Wu Xi-Hong Ma Yin-Jian Niu Cong-Ren Yang 

机构地区：[1]School of Minerals Processing and Bioengineering, Central South University [2]Key Laboratory of Biometallurgy of Ministry of Education, Central South University [3]China Association of Nonferrous Metal Industry

出　　处：《Rare Metals》2013年第6期622-626,共5页稀有金属（英文版）

基　　金：supported by the National Basic Research Program of China (No. 2010CB630905)

摘　　要：Zinc concentrate with high gallium content is one of the main resources of gallium.The gallium presents in the form of isomorphism in tetrahedron coordination with sulfur in sphalerite.The research was to investigate the amenability of zinc concentrate with high gallium to pressure oxygen leaching.The particle size,sulfuric acid concentration,oxygen partial pressure,additive amount,and time of reaction were studied.The extraction yields of gallium and zinc are 86%and 98%,respectively.The optimal condition is 100 g of zinc concentrate with particle size smaller than 38 lm,sulfuric acid concentration150 g L-1,leaching temperature 150℃,leaching time120 min,oxygen partial pressure 0.7 MPa,additive amount of 0.2 wt%.Zinc concentrate with high gallium content is one of the main resources of gallium.The gallium presents in the form of isomorphism in tetrahedron coordination with sulfur in sphalerite.The research was to investigate the amenability of zinc concentrate with high gallium to pressure oxygen leaching.The particle size,sulfuric acid concentration,oxygen partial pressure,additive amount,and time of reaction were studied.The extraction yields of gallium and zinc are 86%and 98%,respectively.The optimal condition is 100 g of zinc concentrate with particle size smaller than 38 lm,sulfuric acid concentration150 g L-1,leaching temperature 150℃,leaching time120 min,oxygen partial pressure 0.7 MPa,additive amount of 0.2 wt%.

关 键 词：GALLIUM Pressure oxygen leaching Zinc concentrate 

分 类 号：TF843.1[冶金工程—有色金属冶金]