亚铁离子加氧浸出钴中间品的钴  

Leaching of Cobalt from Cobalt Intermediate with Ferrous Ion and Oxygen

作　　者：熊以俊 陈斌 谢欣旭 罗旋 许用华 XIONG Yi-jun;CHEN Bin;XIE Xin-xu;LUO Xuan;XU Yong-hua(Ganzhou Yihao Umicore Industrials Co.,Ltd.,Ganzhou 341000,Jiangxi,China)

机构地区：[1]赣州逸豪优美科实业有限公司,江西赣州341000

出　　处：《有色金属（冶炼部分）》2022年第1期14-19,共6页Nonferrous Metals（Extractive Metallurgy)

基　　金：江西省赣州市科技计划资助项目(赣市科发[2018]50号);江西省重点新产品计划项目(20111CX18600)。

摘　　要：以钴中间品为原料,在鼓风氧化条件下,采用硫酸亚铁浸出钴中间品的钴,Fe^(2+)能将Co^(3+)还原为Co^(2+),同时,Fe^(2+)与氧气作用生成FeOOH时产生酸,产生的酸可进一步浸出钴中间品。较优的工艺条件为:温度80℃、Fe/Co摩尔比1.05、液固比8、浸出时间3 h、鼓风量8 L/min、电位285 mV,在此条件下,Co浸出率达到99.7%。该方法无需加酸、碱、还原试剂,环境友好,为钴中间品原料的浸出探索了一条新的解决路径。Cobalt was leached from cobalt intermediate under condition of blast oxidation with ferrous sulfate.Fe^(2+) reduces Co^(3+) to Co^(2+),and Fe^(2+) reacts with oxygen to form FeOOH,meanwhile producing acid,which can further leach cobalt intermediate.Co leaching rate is 99.7% under the optimum conditions including temperature of 80℃,Fe/Co molar ratio of 1.05,L/S of 8,leaching time of 3h,air blowing volume rate of 8 L/min,and potential of 285 mV.This method is eco-friendly without using of acid,alkali,or reductant.It provides a new solution for leaching of cobalt intermediate and removing iron from ferrous leaching solution.

关 键 词：钴中间品 亚铁 加氧 无酸 浸出 

分 类 号：TF816[冶金工程—有色金属冶金]