Completing one of the above processes is called a work cycle, a circle about takes 15 minutes, the vertical roller mill can be carried out automatically according to the procedure.You may interest in: How Many Types of vertical roller mill?The vertical mill is mainly composed of a pulsating mechanism, an excitation coil, an iron yoke and a rotating ring. It is divided into dry type and wet type magnetic vertical roller mill.The weak magnetic ore mainly has limonite, hematite, manganese ore, and symbiotic ore (multiple ores coexisting).  These weak magnetic ores are mainly composed of ferric oxide, if you want to extract ferric oxide, you need to use high-strength magnetic equipment.  Our company has developed a high-strength magnetic concentrator for this difficult mine.There are many weak magnetic ores that are bulk and need to be crushed first, crushing, grinding then magnetic separation.