Abstract: The paper presents Yufeng magnetic separation column from its structure, separation principles, application benefits, industrial application and its efficient performance in the cleaning of low grade magnetic separation concentrates, the separation of extremely lean magnetic ores and the recovery of magnetic concentrate from tailings of magnetic separation, makes a systematic description of its test results in the cleaning of the undersize product of fine screening at Chengde No.2 Mine, the separation of three kinds of extremely lean run-of-mine ores of a mining company in Zhaoyang, and the treatment of magnetic separation tailings of a Korean magnetite ore, which well reflect its efficient separation of slime, liberated gangue and intergrowth, especially the lean intergrowth particles, gaining high grade concentrate of magnetic separation.

Key words: Magnetic separation column, Low grade magnetite ore, Ultra-lean magnetite ore, Cleaning concentration