Patent ID: 6491863
Filing Date: 2002-12-10
Classification: C21B,C21C,C22B

Abstract:
An apparatus for efficient utilization of a cryogen in inerting of molten or solid metals, the apparatus comprising:a) a source of liquid cryogen; b) a conduit connected to said source of liquid cryogen for transporting said liquid cryogen to a gas/liquid separator; c) a first conduit connecting the gas/liquid separator to a cryogen inerting nozzle and adapted to supply at least a portion of said liquid cryogen to said cryogen inerting nozzle, the cryogen inerting nozzle positioned over molten or solid metal in a container; and d) a second conduit connecting the gas/liquid separator to the container at a position over the molten or solid metal, the second conduit adapted to supply at least a portion of gaseous cryogen separated from said liquid cryogen in said gas/liquid separator to the molten or solid metal , the second conduit connecting the gas/liquid separator to an outer section of the cryogen inerting nozzle.