废旧金刚石刀具在氨水-硫酸铵溶液中选择性溶解铜锌  

Investigation on Leaching of Copper and Zinc From Spent Diamond Tools Using Ammonia-ammonium Sulfate Solution

作　　者：郭勇[1] 秦庆伟[1] 毕凡[1] 吴星琳[1] 刘臻伟[1] 廖广东 

机构地区：[1]武汉科技大学钢铁冶金及资源利用教育部重点实验室,湖北武汉430081 [2]黄石大江集团有限公司,湖北黄石435005

出　　处：《湿法冶金》2016年第5期418-421,共4页Hydrometallurgy of China

基　　金：2014年湖北省重点产业创新团队项目(鄂组通【2014】36号);钢铁冶金及资源利用教育部重点实验室开放基金项目(FMRU201206);湖北省新世纪高层次人才工程资助项目(鄂人社函【2011】763号)

摘　　要：研究了用NH_3·H_2O-(NH_4)_2SO_4溶液从废旧金刚石刀具粉末中浸出铜、锌。结果表明,在温度45℃、氨水浓度3.0mol/L、硫酸铵浓度1.0mol/L、浸出时间3h、液固体积质量比50mL∶1g、空气流量0.2L/min、搅拌速度200r/min条件下,铜、锌浸出率分别达64.67%和68.16%,初步实现了铜、锌的选择性分离。Selective leaching of copper and zinc from spent diamond tools using ammonia-ammonium sulfate solution was investigated. The results show that leaching rates of copper and zinc are 64.67% and 68.16%, respectively under the conditions of 45 ℃, ammonia and ammonium sulfate concentration of 3.0 and 1.0 mol/L,leaching time of 3 h,iquid-to-solid ratio of 50 mL/1 g,air velocity of 0.2 L/min and stirring speed of 200 r/min. The preliminary lseparation of copper and zinc from the alloy is realized.

关 键 词：废旧金刚石刀具 NH3·H2O-(NH4)2SO4溶液 铜 锌 选择性浸出 

分 类 号：TF81[冶金工程—有色金属冶金]