... High quality and reasonable price. Twin roller machine for coal briquetting Features of briquette machine:1. Direct&professional briquette ... energy-saving briquette machineBriquette machine can be used to press coal powder, iron powder, coke, aluminum powder, scrap iron, ... toner, toner, slag, gypsum, tailings, sludge, kaolin, activated carbon, and other powder and waste material .The machine is widely ...