... 4.Low Cost and Labor Large capacity!! sawdust charcoal ball press machineIntroduction:Ball Press Machine also called ... iron, coal, aluminum, iron, iron oxide, carbon powder, charcoal powder, slag, gypsum, tailings, sewage sludge, kaolin, activated ... waste residue, widely used in refractories, metallurgical, chemical, electric factory, energy, transportation, heating and other industries, the pressure ...