METHOD FOR REFINING AND REUSING AL SCRAP

PURPOSE:To efficiently remove impurities of Si, etc., contained in an Al scrap by separating and recovering an Al crystallized material which is pressed by giving a specific load to the lower surface of a pressing plate, from the residual liquid phase part. CONSTITUTION:The molten Al scrap 6 is char...

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Bibliographische Detailangaben
Hauptverfasser:	KOMATA TOSHIHITO, SAOTOME TAKAYUKI, OTAKI MITSUHIRO, KUDO HIDEAKI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS 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 PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PURPOSE:To efficiently remove impurities of Si, etc., contained in an Al scrap by separating and recovering an Al crystallized material which is pressed by giving a specific load to the lower surface of a pressing plate, from the residual liquid phase part. CONSTITUTION:The molten Al scrap 6 is charged into a cylindrical graphite- made vessel 1. An inner wall part in the vessel is held to 660 deg.C with a heater arranged around the vessel 1. A cooling body 5 is dipped into the molten scrap 6. The molten metal 6 is cooled to the temp. having the liquidus temp. or lower and the solidus temp. or higher while giving the cooling body 5 vibration. Then the Al crystallized material is produced in the molten metal 6. Successively, the pressing plate 2 is descended from the upper part of the vessel 1 to accumulate the Al recrystallized maternal to the lower part of the vessel 1. Further, the Al crystallized material pressed by giving the load corresponding to 2-15MPa press to the lower surface of the pressing plate 2 is separated from the remaining liquid phase and recovered. By this method, the Al scrap is efficiently regenerated and the effective utilization of the Al resource can be promoted.