关键词: 工艺矿物学, 磁铁矿, 连生关系, 选矿流程, 铜硫浮选

Abstract: In order to clarify the comprehensive utilization direction of an iron ore resource in eastern Hubei and optimize the beneficiation process，the process mineralogy of the iron ores was systematically studied by means of chemical analysis，scanning electron microscopy and automatic quantitative analysis of minerals. The results show that the main components of the iron ore are metallic minerals such as magnetite， pyrite and chalcopyrite，as well as gangue minerals such as garnet，potassium feldspar and quartz. The con⁃ tents of iron，copper and sulfur are 32.06%，0.02% and 1.20%，respectively. Magnetite mainly exists in the form of semi-automorphic or anhedral granular，mostly in the form of disseminated or agglomerated distribu⁃ tion，and locally in the form of dense disseminated. The degree of monomer dissociation is low，and the rela⁃ tionship between magnetite and gangue minerals is complex. Fine grinding is needed to improve the degree of monomer dissociation. In addition，sulfur mainly exists in the form of pyrite，and copper exists in the sin⁃ gle form of chalcopyrite. The relationship between the two is simple and can be recovered by flotation. Based on the results of process mineralogy research，it is recommended to use dry magnetic separation-rough grinding-one stage magnetic separation-fine grinding-two stage magnetic separation-magnetic separation tailings copper-sulfur flotation process.

Key words: process mineralogy, magnetite, intergrowth relationship, beneficiation process, copper?sulfur flotation