DEZINCING APPARATUS AND DEZINCING METHOD

• Main Authors: TANAHASHI, NAOKI, FUJIWARA, TOSHIMITSU, NAKAMURA, SHIGEYUKI, YAMADA, TAKAHIRO
• Format: Patent
• Language: English; French; Japanese
• Published: 03.03.2011
• Subjects: BLASTING; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; FERROUS OR NON-FERROUS ALLOYS; FURNACES; FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; KILNS; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; OPEN SINTERING OR LIKE APPARATUS; OVENS; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; RETORTS; 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; WEAPONS

Disclosed is a dezincing apparatus which comprises an induction heating vessel (50) that has an introduction opening for introducing steel sheet scraps (41) and is the outer vessel of the dezincing apparatus (2), induction heating coils (60, 61) wound around the outer peripheral surface of the induction heating vessel (50) and connected to a high-frequency power unit, and a hollow pipe (70) constituted of an alloy steel, the pipe (70) being a hollow rod disposed upright in the center of the induction heating vessel (50), wherein the inside of the vessel is changed to a reducing atmosphere, for example, by the introduction of a carbonaceous material (42), and the hollow pipe (70) has slits (71, 72, 73) for discharging zinc vapor, etc. outside. La présente invention se rapporte à un appareil de dézingage qui comprend une cuve de chauffage par induction (50) qui a une ouverture d'introduction pour introduire des ferrailles de tôles d'acier (41) et est la cuve externe de l'appareil de dézingage (2), des serpentins de chauffage par induction (60, 61) enroulés autour de la surface périphérique externe de la cuve de chauffage par induction (50) et raccordés à une unité de puissance haute fréquence, et un tuyau creux (70) composé d'un acier allié, le tuyau (70) étant une tige creuse disposée verticalement au centre de la cuve de chauffage par induction (50). L'intérieur de la cuve est modifié sous une atmosphère réductrice, par exemple par l'introduction d'une matière carbonée (42) et le tuyau creux (70) a des fentes (71, 72, 73) pour évacuer la vapeur de zinc, etc., vers l'extérieur.