Abstract:

The article introduces the research results of the process pf separating and recovering zinc and copper from a mixture of sfag and dust generated from the copper casting and cooking process in the bronze casting village of Long Thuong, Hung Yen. The precipitation cementation process recovers copper in the solution after reduction of iron and aluminum at pH=3.0 with metallic zinc powder for the recovery efficiency of 99.6%. The solution after copper cementation is neutralized to pH=7 to precipitate zinc hydroxide. The recovery rate of zinc reached over 96%, the remaining solution will be circulated to dissolve.