Sequential leaching of copper from mill tailings with aqueous solutions of hydrochloric acid and sodium hypochlorite

This work presents an investigation of kinetics copper leaching from mill tailings with hydrochloric acid and sodium hypochlorite at room temperature in filtration mode. The concentration varied 0.05 to 0.5 M 0.025 0.1 respectively. When the samples were leached sequence five-hour solutions acid, then six-hour hypochlorite, maximum degree extraction into solution was 32.62 %. And case inverse direction, a for two hours, seven 87.10 % extracted, which is 2.67 times more than previous case. It has been shown that using reagents significant impact on efficiency tailings.