... powder 1, To press coal powder into bar 2, BBQ Charcoal briquette product machine from coal powder Raw Materials: (water content lower ... than 12%) Sawdust, charcoal ,coal rice husk ,stalk smaller than Length 5mm. Diameter 3mmCondition ... Briquette20-40mmSpeed46-60 r/mScrew blade4 pieces QJ-CE-140 Charcoal briquette product machine from coal powder