... . Ball Pressing Machine can be used to suppress coal , iron , coke , aluminum powder, iron , iron oxide skin, toner , toner , slag , gypsum, tailings ... powder, copper powder, lead powder, etc.) , metallurgical additives, sponge iron, etc., without adding any binder pressed into the case of ... . Loose on the local materials, such as coke, iron skin, dust powder effects of sludge and other materials ...