The effect of acid leaching conditions on enriching iron during comprehensive treatment of pyrite cinder

The effect of leaching conditions on the enriching iron was studied after pre-treatment of pyrite cinder. And the influence of acid leaching temperature, leaching time, pH value and the ratio of liquid to solid on enriching iron was done. The results show that, when the acid leaching temperature was 20˚C, the reaction time was 10mins, the pH value was 1.5, and the ratio of liquid to solid was 6, the iron content in pyrite cinder reached 60.4%, and the sulfur content was 0.227%, which would meet the requirements of raw material for iron-making.