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Metal Mine ›› 2014, Vol. 43 ›› Issue (09): 69-71.

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Study on Leaching Process of a Beryllium Concentrate from Xinjiang

Wang Qingliang1,Li Zhong1,Li Qian1,Hu Eming1,Xiong Xiao1,Cheng Quanhui2   

  1. 1.School of Nuclear Resource Engineering,University of South China,Hengyang 421001,China;2.No.6 Smelting Plant of Shuikoushan Nonferrous Metals Company,Hengyang 421001,China
  • Online:2014-09-15 Published:2015-04-15

Abstract: In order to efficiently extract beryllium in a beryllium concentrate,Xinjiang province,with particle size from 0.074 to 0 mm,beryllium content of 5.60%,the dosage of concentrated sulfuric acid,pretreatment temperature,the ratio of liquid to solid,and leaching time in process of heating sulfuric acid pretreatment-agitation leaching are studied.The result show that leaching rate of beryllium oxide reaches 97% with mass ratio of beryllium concentrate to concentrated sulfuric acid of 1〖DK(〗∶〖DK)〗1.5,pretreatment temperature at 180 ℃,liquid to solid ratio of 2〖DK(〗∶〖DK)〗1 in agitation leaching,and leaching for 4 h.This process has good leaching performance.All factors of dosage of concentrated sulfuric acid,pretreatment temperature,liquid to solid ratio,as well as leaching time significantly influence the leaching rate of beryllium oxide,among which the temperature is the most.By the leaching process above,energy consumption and costs can be greatly reduced.The process provides a reference for beryllium concentrate leaching.

Key words: Beryllium concentrate, Concentrated sulfuric acid pretreatment, Agitation leaching