关键词: 磁铁矿, 浮选柱, 磁铁矿精矿, 脱硫

Abstract: A desulfurization research on the magnetite concentrate with a sulfur content over 0.4% was conducted by flotation column. The ideal operational conditions had been investigated through the systematic flotation column tests in the lab. The results are as follows: grinding fineness of -200 mesh over 96.8%, the dosage of xanthate 240 g/t, Na2S 800 g/t, CuSO4 200 g/t, 2^# oil 200 g/t. On these conditions, the sulfur content in Fe concentrate can be reduced to 0.084% after once flotation column test. However, the sulfur in Fe concentrate is still more than 0.2% by a flotation process of one-roughing, two-cleaning and one-scavenging.  

Key words: Magnetite, Flotation column, Magnetite concentrate, Desulfurization