Abstract: A method for producing copper metal from copper concentrates without generating waste by: (a) oxidizing copper concentrate; (b) cleaning and cooling the gases; (c) feeding to a reduction reactor; (d) cleaning the gases; (e) discharging hot powders and calcines into water; (f) performing magnetic separation; (g) thickening and filtering the magnetic fraction; (h) floating silica and inert materials; (i) thickening and filtering the silica and inert materials; (j) thickening and filtering the final concentrate containing the copper metal and noble metals; (k) smelting the final concentrate of copper and noble metals; and (l) recirculating ground smelt slag to a roasting reactor.

Abstract: A fast cooling equipment for organic or inorganic vapors that comprises a vertical double-truncated-cone body joined by the apex of both cones, provided with an external refrigeration jacket along its entire length; an upper coverlid placed at the base of the upper inverted truncated cone, provided with a central entrance for the vapors to be condensed with a thermal insulating layer; an annular chamber provided with two or more openings or nozzles from which a cold gas is blown; an annular chamber located below the cold gas chamber; an inner central cone located inside the lower section of the condenser body, provided in turn with an internal cooling system and deflecting baffles located at one or more cone levels and in mutually opposing directions between each successive level; and a lower accumulation section for liquids or other condensable materials, provided with a conventional drain system and a lateral exit for gases and liquids that are separated in a conventional cyclone system.

Abstract: Equipment and a process to produce biofuel by fast pyrolysis of organic material, comprising a system of three interconnected serial fluidized bed reactors: a fast pyrolysis reactor located inside another reactor wherein charcoal is burned; a combustion reactor that burns the charcoal generated in the fast pyrolysis reactor; and a preheating reactor to preheat inert particulate material. The equipment also includes a pneumatic recycling system for inert particulate material.