Hammer crusher (hammer mill) is applicable for various hard and fragile materials, such as limestone, coal, salt, gypsum, alum, brick and tile, etc. The crushing compressive strength of materials should not be in excess of 150Mpa. Hammer crusher is mainly used in industries such as cement, coal separation, electricity generation, building materials and compound fertilizer, etc. And hammer crusher can crush materials with different sizes into equal particle, which favors the next procedure. The advantages of hammer crusher are reliable mechanical structure, high productivity and favorable applicability.