Abstract: At present, some of iron ore stopes at domestic have a certain amount of waste rocks. Some rocks are treated as waste rock, but the waste rock also contains magnetic iron minerals with good dressing ability. Experiments on waste rocks from an Iron Mine at domestic are made through the process of stage dry magnetic separation and dry concentrate separation after grinding. The results show that after a large number of waste rocks tailings are cast by dry magnetic separation, and dry concentrates are treated by low intensity magnetic separation after grinding, high-quality iron concentrates are achieved.  

Key words: Waste rocks, Dry magnetic separation, Low intensity magnetic separation after grinding, Iron-bearing waste rocks