... to suppress coal , iron , coke , aluminum powder, iron , iron oxide skin, toner , toner , slag , gypsum, tailings , sludge , kaolin , activated ... line contact point, the pressure of materials has reached the peak. Tremendous pressure in the role of line, the materials become a finished ... Reached a multiplier effect. Loose on the local materials, such as coke, iron skin, dust powder effects of sludge and ...