关键词: 细磨, 磁铁矿, 磁选, 预选抛尾

Abstract: In allusion to micro-fine disseminated iron ore from Namibia, beneficiation tests of grinding-low intensity magnetic separation and grinding-pre-discarding tailings-regrinding-low intensity magnetic separation were carried out. For this run-of-mine ore with a TFe grade of 23.63%, TFe grade and recovery of 66.56% and 47.56% was obtained in the former test flow, and TFe grade and recovery of 66.38% and 51.44% was obtained in the latter test flow. Contrasting the two beneficiation flow sheets, index of concentrates is similar, but the latter can reduce 41.85% of the regrinding of the crude ore, so it is taken as recommended beneficiation flow sheet.

Key words: Fine grinding, Magnetite, Magnetic separation, Pre-discarding tailings