降低钴浸出液中铁杂质含量研究  

Study on Iron Removal from Cobalt Leaching Solution

作　　者：张素超[1] 姚立学 卢苏君[1] 张鹏[1] ZHANG Su-cha YAO Li-xue LU Su-jun ZHANG Peng(Jinchuan Nickel ＆ Cobalt Research Engineering Institute Jinchuan Nickel Center Industrial Company, Jinehuan Group Co. , Ltd. , Jinchang 737100, Gansu, China)

机构地区：[1]金川集团股份有限公司镍钻研究设计院,甘肃金昌737100 [2]金川集团股份有限公司镍都实业公司,甘肃金昌737100

出　　处：《有色金属（冶炼部分）》2017年第6期13-15,38,共4页Nonferrous Metals（Extractive Metallurgy)

摘　　要：某钴冶炼厂采用中和水解法除铁,在除铁过程中,存在除铁率低、铁渣中夹钴率高(达到14%)等问题。对此,采用中和水解法来降低除铜后钴浸出液中铁含量,对影响除铁的参数进行多因素试验。结果表明,在氧化还原电位0.40V、终点pH在4.00~4.25、除铁时间控制在6.5h以上、空气流量大于0.8倍溶液/min,除铁温度在50℃以上时,除铁率达到99%,钴夹带率降低到≤1%。A cobalt smelting plant applyies neutralizing hydrolysis process to remove iron.Process of iron removal has low iron removal rate and high cobalt entrainment in slag（up to 14%）.Iron was removed from lixivium after copper removal by neutralizing hydrolysis process.Effect of parameter on iron removal was investigated.The results show that iron removal rate is 99%and cobalt entrainment rate is 1% below under the conditions including redox potential of 0.40 V,terminal pH value of 4.00~4.25,iron removal time of 6.5habove,air flow of 0.8time volum of solution per minute,and temperature of 50 ℃ above.

关 键 词：钴 浸出液 除铁 中和水解 电位 PH 

分 类 号：TF816[冶金工程—有色金属冶金]