CONTINUOUS REFLUX REFINING OF METALS

CONTINUOUS REFLUX REFINING OF METALS A method and apparatus are described for the continuous refining of an impure metal. The invention comprises providing a column consisting of a slurry of metal crystals in liquid metal, the column having a relatively cool zone and a relatively hot zone and a cont...

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Bibliographische Detailangaben
Hauptverfasser:	ESDAILE, JAMES D, WALTERS, GRAEME W
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS CRYSTAL GROWTH FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SEPARATION SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Beschreibung
Zusammenfassung:	CONTINUOUS REFLUX REFINING OF METALS A method and apparatus are described for the continuous refining of an impure metal. The invention comprises providing a column consisting of a slurry of metal crystals in liquid metal, the column having a relatively cool zone and a relatively hot zone and a continuous temperature gradient between said zones. The temperature of the cool zone is such as to permit coexistence of liquid and crystalline metal, and the hot zone is at a temperature sufficient to melt the crystals. A portion of the column in the cool zone is chilled to form a coherent mass of crystals of the metal and then incipient melting in the mass is allowed to occur to release crystals from the mass into the column of the crystals in the liquid metal in the cool zone of the column. The crystals are transported through the temperature gradient and into the hot zone, where melting of the crystals occurs and the hot zone thereby becomes enriched with the pure liquid metal.