... material with mid-hardness under 120Mpa, like coking coal, anthracite, the coal used for fluidized bed boiler in fire power ... is developed specially for the coal crushing line, like coking coal, coal for electricity power and other coal industry. Reversible hammer crusher, ... and have weak corrosivity, such as gangue, coal, salt, chalk, gypsum, tile, limestone, coke, red sandstone, slag, shale, etc. ...