Abstract:

In order to reduce the production operation cost and further increase the ore processing ca⁃

pacity，the beneficiation optimization test was carried out on the grinding of Meishan Iron Mine. The two pro⁃

cess schemes of grinding (grinding fineness -0.075 mm accounted for 65%) -floating sulfur-sulfur tail low

intensity magnetic-high intensity magnetic process（scheme 1）and grinding coarse grinding (grinding fine⁃

ness -0.075 mm accounted for 50%) -gravity magnetic pulling tailings-gravity magnetic pulling concentrate

regrinding (grinding fineness -0.075 mm accounted for 65%) -floating sulfur-sulfur tail low intensity mag⁃

netic-high intensity magnetic separation（scheme 2）were compared respectively. The experimental results

show that by the process of scheme 2，the iron concentrate with yield of 49.88%，TFe grade of 58.29%，sul⁃

fur content of 0.20% and TFe recovery of 77.89%，and the sulfur concentrate with yield of 1.81%，sulfur

grade of 38.11%，TFe grade of 45.44% and sulfur recovery of 49.62% are obtained. The economic and tech⁃

nical indicators are good，which can provide a basis for actual production.

Key words:

technological process, gravity-magnetic pull separator, recovery rate