Abstract: Aimed at the low grade ore with superfine dissemination bearing 13.00% zinc and 40.20% iron，the process of deep reduction-magnetic separation was used，and the factors such as reduction content，reduction temperature，reduction time，grinding fineness and magnetic intensity were used to analyze the influence of recovering zinc and iron.The results show that the ore used was effectively treated with the process of deep reduction-magnetic separation.Iron metallization rate and znic evaporation rate is greater than 92% and 97% after roasting，and grade and recovery of iron is greater than 90% after magnetic separation.

Key words: Low grade Zn-Fe ore, Roasting, Deep reduction, Magnetic separation