... . Ball Pressing Machine can be used to suppress coal , iron , coke , aluminum powder, iron , iron oxide skin, toner , toner , slag , gypsum, tailings , sludge ... , copper powder, lead powder, etc.) , metallurgical additives, sponge iron, etc., without adding any binder pressed into the case of ... into the cake pieces can be directly cast furnace use.2. main role and characteristics of dry powder ball ...