... screw conveyor is a new type of transporting equipment, which uses rotaryscrew vane to push materials ... technological arrangement, easy to be installed , dismantled and moved, safe operation!Applicable materials:Loose materials such ... :clay powder, pulverized coal, cement, sand, grain, smallpiece of coal , cobble, and cast iron filings, etc.While it ... LSY219 Spiral Screw Conveyor for powder and gravel