... of application of rotary dryer:drier is a cylinder,its main body is a litte bit slantwise,and the rotate speed can ... lightweight calcium carbonate,floridin,magnetic particle,graphite,and dregs of a decoction ,the drying temerature should be low, and the raw ... ): For very fine particles and the material prone to flying powder.materials accumulate on grid board when it into,then cylinder rotates, the ...