关键词: 焙烧, 环式磁选机, 筒式磁选机, 柱式磁选机, 辊式磁选机

Abstract: In order to promote the progress of refractory iron ore beneficiation technology，the common beneficiation process and beneficiation equipment are briefly introduced. It is pointed out that the overall sorting process of iron ore can be summarized as one-stage magnetic separation process，stage grinding stage weak magnetic separation process，magnetic separation process with dry pre-selection discarding， magnetic flotation combined beneficiation process，roasting-magnetic separation process. Magnetic separation equipment can be roughly divided into ring magnetic separator，cylinder magnetic separator，column magnetic separator，roller magnetic separator and other categories according to the different structure shapes of magnetic separator. Finally，it is pointed out that the magnetic separation equipment with large， efficient，stable performance and durability is the key direction of future research.

Key words: roasting, ring magnetic separator, cylinder magnetic separator, column magnetic separator, roller magnetic separator