... : 50t/h! 3.Speed of screw: 209r/min! 4:IS09001 LSY series screw conveyor is a new type of ... andsmall piece material , which includes:clay powder, pulverized coal, cement, sand, grain, smallpiece of coal , cobble, and cast iron ... used for the loose cement transportation from cement warehouse to mixer or from cement warehouse to compounding machine in concrete mixing plant. LSY160 micro screw feeder