... .Speed of screw: 209r/min! 4:IS09001 LSY series screw conveyor is a new type of transporting equipment, which uses rotaryscrew ... operation!Applicable materials:Loose materials such as powder, granular andsmall piece material , which includes:clay powder, pulverized coal, cement, sand, grain, ... to compounding machine in concrete mixing plant. LSY219 Spiral Screw Conveyor for powder and gravel