SPRAYING MATERIAL FOR REPAIRING LINING OF STEELMAKING ELECTRIC FURNACE AND METHOD FOR REPAIRING LINING OF STEELMAKING ELECTRIC FURNACE USING THE SAME

PROBLEM TO BE SOLVED: To allow a magnesia-olivine-based spraying material to exhibit excellent repairing effects under operation conditions of a steelmaking electric furnace by improving adhesion of the magnesia-olivine-based spraying material and utilizing the effects of corrosion resistance and re...

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Hauptverfasser:	SUEKAWA YUKIHIRO, KUGIMIYA MASAHIRO, HARASHIMA KIYOSHI, KOGA MASANORI
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE FURNACES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING KILNS LIGHTING LIME, MAGNESIA MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON OVENS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL REFRACTORIES RETORTS SLAG TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF NATURAL STONE WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To allow a magnesia-olivine-based spraying material to exhibit excellent repairing effects under operation conditions of a steelmaking electric furnace by improving adhesion of the magnesia-olivine-based spraying material and utilizing the effects of corrosion resistance and resistance to the penetration of slag possessed by magnesia-olivine. SOLUTION: In a spraying material for repairing the lining of a steelmaking electric furnace, a refractory raw material comprising coarse particles and fine particles, each containing 25-80 mass% fired olivine and the balance being mainly fired magnesia and/or electrofused magnesia, and a binder are blended, and the coarse particles having particle sizes of ≥1 mm contained in the refractory raw material is composed of only fired olivine or a mixture in which the ratio of the fired olivine is higher than the ratio of the fired magnesia and/or the electrofused magnesia. COPYRIGHT: (C)2007,JPO&INPIT