... produce hollow hexagonal or quadrangular cylinder briquettes with different diameters from agro-forestry wastes, such as sawdust ... binding, compressing the biomass to form into various moulds of high density briquette, such as hexagonal, quadrangular, square, ... of product40,50,55 mm60,70,80 mm80mmMoisture content of the raw materialsMoisture content is 8-12%. Charcoal briquette machine<different types ...