Flotation Experimental Study on a Copper-zinc Sulfide Ore

In view of the problem of low grade copper and zinc,the good floatability of zinc mineral and the difficult in separation of copper and zinc in tailings somewhere in Hunan,the test adopted the process of copper-zinc mixed flotation-flotation separation of copper-zinc mixed concentrate. Copper-zinc flotation separation used lime,zinc sulfate and sodium sulfite as the inhibitors of zinc sulfur minerals,and diethyldithiocarbamate as the collector of copper mineral,which realized the effective separation of copper-zinc minerals,as well as the maximum utilization of resources. Through closed-circuit experiment the copper concentrate with the grade of 17. 94% and the recovery of 61. 47% and the zinc concentrate with the grade of 45. 43% and the recovery of59. 73% were obtained respectively. This process provided the technical direction for the reasonable development of this type of copper-zinc ore,at the same time put forward the effective recovery approach of low-grade copper zinc mine of the tailings.