This article studies the existing form of iron particles in direct reduction clinker and their selective recovery technology. It is found that the existing form of iron in tailings is micro-fine iron particles. In direct reduction clinker, the particles greater than 10 μm can be recovered by magnetic separation, however those less than 5 μm cannot.Considering both the grade and recovery of iron powders, it is necessary to conduct a selective recovery of different types of iron powders. Increasing the monome...