... price 1. simple introduction of dry powder ball press machine; Ball Pressure machine, also known as goose machines , mainly used to ... to suppress coal , iron , coke , aluminum powder, iron , iron oxide skin, toner , toner , slag , gypsum, tailings , sludge , kaolin , activated carbon, ... . Loose on the local materials, such as coke, iron skin, dust powder effects of sludge and other materials is very ...