摘要
锌冶炼净化渣先进行高温浸出,使锌、钴、镉等有价金属进入浸出液,而铜留在渣中,所得铜渣再经高酸浸出及水洗后得到铜精矿.结果表明,最佳高温浸出条件为：液固比（6～7）∶1,始酸浓度100 g/L、终点pH=3.0、80～85℃浸出8h;高酸洗涤最佳条件为：液固比（4～6）∶1,终点酸度50 g/L,70～80℃浸出60～90min.铜精矿含铜65％以上、含锌小于2％.
The purification slag from zinc hydrometallurgy was first leached at high temperature.Valuable metals of zinc,cobalt and cadmium entered into lixivium,and copper remained in slag.Copper concentrate was obtained from this copper slag by high acidic leaching and washing process.The results show that copper concentrate with copper grade of 65％ above and less than 2％ of zinc is obtained under the optimum high temperature leaching conditions including ratio of solid to liquid of （6～7） ∶ 1,original acid concentration of 100 g/L,pH value of terminal point of 3.0,temperature of 80～85 ℃,and time of 8 h and the optimum high acidic washing conditions including ratio of solid to liquid of （4～6） ∶ 1,terminal acidity of 50 g/L,temperature of 70～87 ℃,and time of 60～90 min.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2013年第10期4-6,38,共4页
Nonferrous Metals（Extractive Metallurgy)
关键词
湿法炼锌
净化渣
酸性浸出
洗涤
铜精矿
zinc hydrometallurgy
purification slag
acid leaching
washing
copper concentrate
