... powder, iron , iron oxide skin, toner , toner , slag , gypsum, tailings , sludge , kaolin , activated carbon, coke powder and other ... , transportation, heating , etc. , produced by the compression molding machine after the ball materials , energy saving , easy to transport , ... good economic and social benefits.charcoal briquette machine Features:coal briquette machine 1. High quality and efficiency 2. ...