The hammer crusher, also named hammer mill, which brokes materials through the high-speed rotating hammer body and collision the material surface, it has a simple structure, large crushing ratio, high production efficiency and other characteristics, it can be used for dry and wet two forms crushing, it applies to mining, cement, coal, metallurgy, building materials, roads, fire and other departments chronology medium hardness and brittle materials. The device can change material particle size and adjust gap of article grate in accordance with user requirements, so it can meet different users' demand. 
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