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In order to explore the technological mineralogical properties of an iron ore in Inner Mongolia, a more comprehensive technological mineral study was carried out on the ore. The results showed that the iron grade of the ore was 23.52%, and the iron in the ore mainly existed in the form of magnetic iron. 85.60% of the total iron, followed by iron in hematite and limonite, accounting for 7.35% of the total iron, iron in the form of silicate accounting for 6.33% of the total iron, only a trace amount of iron in sulfide minerals, it accounts for 0.72% of the total iron; the main metal mineral of the ore is magnetite, which contains a small amount of hematite and pyrite, and traces of chalcopyrite and sphalerite are visible. Gangue minerals mainly include quartz and feldspar (potassium Feldspar, albite, plagioclase), hornblende (actinolite, chlorite, etc.), mica (biotite, muscovite, etc.), chlorite, calcite, apatite, etc. The ore carries out systematic technological mineralogical research, which provides major basic data support for the comprehensive development and utilization of this type of resource.