| The copper anode slime, which contains a lot of precious metals and rare element, is an important raw material for the recovery of precious metals. The rougher flotation process of copper anode slime, applying some home-made collectors, was discussed, which followed by a pre-treatment process. And different operating conditions were studied in detail. The results showed that, after pre-treatment process, if the home-made collector C had been used and pH value controlled at 2, then the grade of gold and silver in flotation concentrate would reach 0.8%~1.0% and 45%~50%, respectively. And the concentration ratios of precious metal can achieve 4.5. The flotation concentrate will be allowed to turn into the smelting process directly, saving the traditional process of lead smelting and reducing the cost, which is helpful for subsequent processing. |
