镍电解阳极液净化除铜

REMOVE OF COPPER FROMANODE SOLUTION INNlcKEL ELEcTROLYTE

用镍精矿－活性阳极泥－亚硫酸方法，研究了镍电解阳极液除铜效果；通过正交实验，查明了影响残铜量和ｍｃｕ／ｍＮｉ２个指标的主要因素和次要因素；得出最佳工艺条件是：镍精矿的质量浓度为０．３０ｇ／Ｌ亚硫酸体积分数为１５．０ｍＬ／Ｌ阳极泥质量浓度为３．３０ｇ／Ｌ阳极泥活度为３０％，反应温度为８５℃，起始ｐＨ值为３．５，反应时间为４０ｍｉｎ。

The remove of copper from anode solution in nickel ectrolyte has been studied usingthe nickel concentrate-activited anode slime-sulfurous acid.The main factors to affect bothcopper content remaining in the solution and ratio of mCu/mNi the slag have been ascer-tained by means of orthogonal experinient.It is found that the best condition is as follows :nickel concentrate 0. 30 g/L,sulfurous acid 15.0 mL/L,anode slirne 3.30 g/L, activity ofanode slime 30%,temperature of reaction 85℃ starting pH 3.5,time of reaction 40 min。