The coal grinding equipment used in the preparation of pulverized coal usually includes three types of coal grinding machines: low-speed grinding, medium-speed grinding and high-speed grinding. Among them, ball mills and coal-injection vertical mills are widely used in blast furnace coal-injection systems. So, what are the characteristics of coal injection mill? What are the advantages and disadvantages of coal injection vertical mill and ball mill? As a manufacturer of coal-injected vertical mills, Guilin Hongcheng will analyze and answer your questions today.