Refining of crude nickel sulphate obtained from copper electrolyte

被引：10

作者：

Havlik, T ^{[1
]}

Skrobian, M ^{[1
]}

Kammel, R ^{[1
]}

Curilla, J ^{[1
]}

Cmorejova, D ^{[1
]}

机构：

[1] TECH UNIV BERLIN,INST MET,W-1000 BERLIN,GERMANY

来源：

HYDROMETALLURGY | 1996年 / 41卷 / 01期

关键词：

D O I：

10.1016/0304-386X(95)00019-D

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A new method of crude nickel sulphate refining for the Copper Smelter at Krompachy (Slovak Republic) was studied. The crude nickel sulphate removed from the copper electrolyte in the tankhouse contains iron, copper, zinc, and cobalt as impurities, mostly in the form of sulphates. The new method used for the removal of impurities comprises a gradual oxidation followed by selective hydrolytic precipitation of the impurities. The results of the investigation indicate that individual hydroxides will precipitate from the solution with increasing pH in the following sequence: Co(OH)(3)-->Fe(OH)(3)-->Cu(OH)(2)-->Zn(OH)(2)-->Pb(OH)(2)-->Fe(OH)(2)-->Co(OH)(2). Due to the high concentration in the solution, nickel precipitates at lower pH values. Strict control of the pH therefore ensure that the other impurities in the crude nickel sulphate solution are precipitated before the nickel.

引用

页码：79 / 88

页数：10