关键词: 阶段磨矿, 　弱磁选　, 强磁选, 　阴离子反浮选

Abstract: For high efficient recycling mixed ore of magnetite and specularite from Anhui,on the basis of ore properties,stage grinding,low intensity magnetic separationscreeningmid magnetic separationhigh intensity magnetic separationanionic reverse flotation process was decided to adopt,under the condition of one coarse grinding,qualified iron concentrate products can be obtained in advance by combination process of low intensity magnetic separation and screening; by adding mid magnetic separation technology can effectively reduce the magnetic inclusions in high intensity magnetic separation,finally get the iron concentrate with yield rate was 39.65%,iron grade of 66.91%,iron recovery rate was 80.57%,test index is good.

Key words: Stage grinding, Low intensity magnetic separation, High intensity magnetic separation, Anionic reverse flotation