... kinds of briquettes from mineral powder, such as coal powder, coke powder, charcoal powder, iron dust, mill scale, cast iron powder, etc;3) The briquettes ... such as light burning magnesium, iron oxide skin, manganese alloy, sludge, gypsum, carbon, silicon carbide, copper powder, iron powder and various refractory materials ... briquettes: Briquette Press Machine making briquette fuel from mineral powder