... .Coal powder,Coke powder,Lignite,etc This briquette machine have two larger rollers in a fixed position ... Double Pressing Briquette Press can supply higher pressure and higher density during production of briquettes, so the briquettes are stronger ... to ensure that the granule size fed to the machine is maintained below 3mm, preferable in the range ... of 8-20%. huizhong brand coal briquette press machine