某氰化尾渣中铅、锌和铜的综合回收研究

Study on Comprehensive Recovery of Lead,Zinc and Copper from Cyanide Tailings

对含有铅、锌和铜等有价金属的某氰化尾渣,采用预处理—铅锌混合浮选—预处理—铜浮选工艺,开展了详细的综合回收利用研究。研究结果表明,采用H_(2)SO_(4)活化预处理,在pH 8、丁基黄药用量为100 g/t时可获得Pb品位为10.87%、回收率为71.76%,Zn品位为31.89%、回收率为92.46%的铅锌混合精矿;采用现场选硫循环水对铅锌混合浮选尾矿进行洗涤,在pH 6、丁基黄药用量为50 g/t时得到了Cu品位为13.41%、回收率为33.39%的铜精矿。该工艺显现出了良好的经济效益和社会效益。

Cyanide tailings containing valuable metals such as Pb,Zn and Cu were subjected to a detailed comprehensive recovery study using the process of pretreatment-Pb-Zn bulk flotation and pretreatment-Cu flotation.The results of the tests showed that the Pb/Zn bulk concentrate with a grade of 10.87%and a recovery of 71.76%for Pb,31.89%and 92.46%for Zn could be obtained at pH 8 and 100 g/t of butyl xanthate by using H_(2)SO_(4) activated pretreatment.Cu concentrate with a grade of 13.41%and a recovery of 59.60%was obtained at pH 6 and butyl xanthate of 50 g/t.The technology has shown good economic and social benefits.