关键词: 铁矿, 配矿, 浮选脱硫, 磁选

Abstract: The total iron grade of Peru iron ore is 61.27%，the magnetic iron grade is 56.72%，and the sulfur content is 2.70%，which is a high sulfur and high grade magnetic iron ore.The total iron grade of a self-produced iron ore in Nanjing is 39.92%，the magnetic iron grade is 21.66%，and the sulfur content is 1.16%，which is a sulfur-containing mixed iron ore.In order to explore the influence of Peru iron ore on the separation index of a self-produced iron ore in Nanjing，the beneficiation process tests of two kinds of iron ore with different mass ratios are carried out.The test results show that under the conditions of grinding fineness of -74 μm 67%，activator CN dosage of 1 000 g/t，mass ratio of Peru iron ore to an iron ore in Nanjing of 1∶8，Feirui tailor-made collector dosage of 23.68 g / t，and Fuercheng tailor-made foaming agent dosage of 13.12 g /t，the pre-desulfurization is carried out by one roughing-one scavenging-three cleaning flotation process.The desulfurization tailings are separated by low intensity magnetic separation�high intensity magnetic separation one roughing and one scavenging process. The sulfur concentrate with sulfur grade of 25.37% and sulfur recovery of 72.66%，and the iron concentrate with iron grade of 57.87%，iron recovery of 82.93% and sulfur content of 0.34% are obtained by the whole process test， which realizes the efficient recovery of sulfur and iron resources.

Key words: iron ore, ore blending, flotation desulfurization, magnetic separation