The PCH ring hammer crusher is used for crushing various fragile materials which are moderately hard and have weak corrosively, such as gangue, coal, salt, chalk, gypsum, tile, limestone, coke, red sandstone, slag, shale, etc. Both dry crushing and wet crushing are available. The ring hammer crusher can also be applied for crushing fiber structure, scrap wood which has strong elasticity and toughness, waste paper, broken asbestos cement, etc.