关键词: 磁-赤铁矿, 弱磁选, 强磁选

Abstract: In order to rationally develop and utilize a mixed maghemite ore with iron grade of 50.84% and fine ore particle size in Brazil，the process test was carried out on the basis of ore properties research. The results show that under the grinding fineness of -0.076 mm 60%，the comprehensive iron concentrate with the yield of 70.89%，iron grade of 63.30% and iron recovery of 91.60% can be obtained by grindinglow intensity magnetic-high intensity magnetic one roughing one scavenging process. The beneficiation in⁃ dex is good，which can provide technical reference and basis for the production and processing of such iron ore in domestic concentrators.

Key words: maghemite ore, low-intensity magnetic separation, high-intensity magnetic separation