... below 6%, such as barite, calcite, feldspar, talcum, pencil stone, marble, coke, powdered-coal, dolomite, fluorite, active carbon, betonies, ceramiciron ore ... 4R Raymond Mill Professional 4R Raymond Mill Working Principle:Firstly, raw material is crushed by jaw crusher to the size required ... Mill products. Professional 4R Raymond Mill for barite,glass,limestone,marble