关键词: 铜尾矿, 铁资源回收, 磁场强度, 磁选

Abstract: The total iron grade of iron tailings in tailings after copper separation iron resource recov⁃ ery system is more than 14.00%. In order to recover iron resources as much as possible and find out the rea⁃ sons for the high total iron grade in iron tailings，the process flow and equipment of iron resource recovery system are systematically investigated and analyzed. The process mineralogy analysis and beneficiation test of tailings after iron separation are carried out to explore the feasibility of further separation of iron tailings. The results show that the process flow of the iron resource recovery system is reasonable，the magnetic field strength of the magnetic separation equipment meets the process requirements，and the recovery of iron resources is sufficient. Although the total iron grade in the tailings reaches 14.90%，the mFe grade is only 0.42%，indicating that the magnetic iron minerals have been fully recovered.

Key words: copper tailings, iron resource recovery, magnetic field strength, magnetic separation