... coal, dolomite, fluorite, active carbon, betonies, ceramiciron ore, granite, iron oxide yellow, gold mine, porcelain clay, plaster, limestone, clay, ... vibrating feeder evenly and continuously into the grinding chamber for powder-processing. The rollers oscillate outward to press the ring ... into the cyclone and poured out through the output-powder pipe as the final products.Professional 4R Raymond Mill ...