... set HGM micro powder grinding mill consists of hammer crusher, bucket elevator, storage hopper, vibrating feeder, main unit, ... by blower and muffler Technical Data of micro powder grinding mill ItemUnitSpecificationHGM8021HGM10027Number of roller piece2127Layer of ringpiece1x31x3Ring ... to change without prior notice. Example: Calcite fine powder, GCC,calcium powder (mesh: 600, 800, 1250, 2500 mesh) ...