Hammer crusher machine is suitable for crushing and drying soft or nonabrasive materials, eg: gypsum, chalk, clay, slurry, filtered cake, etc. It can break up, dry and calcine industrial byproduct plaster, flue gas desulfurized gypsum. This crushing equipment is of high efficiency and low energy consumption. It has the function of breaking up and crushing the materials while drying them. The rotary totor breaks up the materials, hot blast dries them, and air flow takes the crushed and dryed materials into separation chamber. Afterwards, fine powder is separated in cyclone, while coarse particles go back to the used hammer crusher and crushed again.The main working part of the hammering machine is rotor with a hammer. The material is loaded from upper inlet into the machine, through blowing, impacting, shearing, grinding and crushing of the high-speed movement of the hammer. Under the rotor, there is a sieve plate which can screen the grinding materials smaller than the hole size. The greater materials continues to be hit and grinded by the hammer on the sieve plate. Hammer head is hit the impact of the materials at the same time. Long-term using repeatedly make hammer head face damage and change the surface shape. So hammer is a major part of the impact crusher which directly effect crushing efficiency. When buying a hammer crusher equipment, you can follow these tips: 1. Check the material of hammer head. The most of current domestic heavy hammer crusher are made of high manganese steel. 2. The hammer crusher feeding conditions is related to the production of crusher hammers and material collision. 3. The structure design of the hammer crusher hammers. 4. Learn the technical parameters of hammer crusher machine. 5. Manufacturing process of hammer type crusher. If you are interested in single stage crusher, welcome to contact Fote Machinery: sales@hxjq.com hammer mill: http://www.china-sand-maker.com/machine/p14.html