Compound Crusher: 1.feed material:midium-hard,hard,moisture less than 12% 2.feeding size:<120mm 3.discharging size:0-5mm Working principle: Materials fall into the high-speed rotation impeller from the above of machine, under the action of high-speed centrifugal force,have high-speed impact with another umbrella form materials which flow around the impeller,after they attack each other, then ...