... stalks ,nutshell, coconut shell ,etc Working principle:Briquette machine uses a large screw to grind, compress and ... biomass to form into various moulds of high density briquette, such as hexagonal,quadrangular, square,etc. As ... briquettes can be used as a substitute of any fuel in following fields :Boilers : It can be ... Thank you ! good quality wood charcoal briquette machine with favorable price