... .No pollution 4.ISO:9001:2008 The introduction of rotary dryer:Rotary dryer is widely used in construction, mining, chemical industry, cement ... etc. industries to dry sand, slag, clay, etc. materials. Rotary dryer we produce has simple structure, convenient maintenance, and lower energy ... by spiral copy plate. Because the dryer was in the tilt place, on the one hand the material flow backend under the ...