NH_3-NH_4Cl-H_2O体系氧化锌矿柱浸试验研究  

Column Leaching of Zinc Oxide Ore in NH_3-NH_4Cl-H_2O System

作　　者：王瑞祥[1] 余攀[1] 曾斌[1] 王志刚[2] 阮建国[2] 

机构地区：[1]江西理工大学冶金与化学工程学院,江西赣州341000 [2]中国瑞林工程技术有限公司,南昌330031

出　　处：《有色金属（冶炼部分）》2013年第11期4-6,共3页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(51164011);国家高技术研究发展计划(863计划)项目(2013AA064001);福建省区域科技重大合作项目(2011H4025)

摘　　要：采用NH3-NH4Cl-H2O体系柱浸方法浸出氧化锌矿。结果表明,在矿石粒度为0.1～10mm、双柱串联操作、第一柱中填料2 629g、第二柱填料1 314g、总氨浓度7.5mol/L、NH4Cl/NH3=2∶1、浸出液循环喷淋30d条件下,锌浸出率达到92.19%,浸出液中锌离子浓度达到54.38g/L。与瓶浸结果相比,柱浸工艺锌浸出率提高约4个百分点,浸出液中Zn2+浓度提高约11g/L。Zinc oxide ore was column leached in NH3-NH4C1-H20 system. The results show that the leac- hing rate of zinc is 92.19% and zinc ion concentration in leachate is 54.38 g/L under the conditions inclu ding ore particle size of 0.1-10 ram, double column series operation, ore loading in first column of 2 629 g and 1 314 g in second column, total ammonia concentration of 7.5 mol/L, NH4C1/NH3 =-2 ： 1, and leac- hing time of 30 days. Compared with the results of bottle leaching, zinc leaching rate of column leaching is improved by about 4 percent point and zinc ion concentration in leachate is improved by about 11 g/L.

关 键 词：氧化锌矿 NH3-NH4Cl-H2O体系 柱浸 

分 类 号：TF813[冶金工程—有色金属冶金]