... 3. Kinds of molds for choice MG Charcoal briquette machine Request for raw materials: charcoal powder or coal powderFeatures:1. High efficiency2. ... that the granule size fed to the machine is maintained below 3mm, preferable in the range of 30-40% small ... powder, coke, coal sludge, etc) need to make coal briquette, using in industrial boilers and civilian boiler. MG Charcoal briquette machine