Experimental Study on Recovery of Super Pure Iron Concentrate from an Iron Concentrate in Sichuan

The iron grade of a iron concentrate in Sichuan is 64.56%, and the content of SiO₂ and Al₂O₃ is 5.50% and 2.01% respectively. Material composition research shows that iron minerals are mainly in the form of magnetic iron. The process of stage grinding and magnetic separation which added dispersant H01 in regrinding is carried out to increase iron grade and reduce silicon content. Finally, the super iron concentrate with iron grade 72.11%, SiO₂ content 0.20%, Al₂O₃ content 0.16%, acid insoluble content 0.28%, and the iron recovery is 92.72%.