... 4.Low Cost and Labor Large capacity!! sawdust charcoal ball press machineIntroduction:Ball Press Machine also called ... as, coal powder, charcoal powder, metallic powder (Fe / Si powder), iron scale, iron sludge, precipitator dust, iron concentrate, the final ... be used to suppress the pulverized coal, iron, coal, aluminum, iron, iron oxide, carbon powder, charcoal powder, slag, gypsum, tailings, sewage ...