SLAG KILLING MATERIAL MADE OF REFRACTORY WASTE AND METHOD FOR KILLING SLAG FOAMING

• Main Author: ERA YASUSHI
• Format: Patent
• Language: English
• Published: 31.07.2008
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; METALLURGY OF IRON; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; 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

PROBLEM TO BE SOLVED: To provide a method for effectively using, as a slag killing material in a slag ladle, fine refractory waste with a grain size of <10 mm among refractory waste produced in various furnace equipment and ladles used in steelmaking facilities. SOLUTION: The slag killing material comprises the refractory waste as a raw material and contains the refractory waste with a grain size of <10 mm among the refractory waste produced in various furnace equipment and ladles used in steelmaking facilities. The slag killing material contains ≥50 mass% of refractory powder with a grain size of ≤1 mm and is used by uniformly mixing it with ≥15 mass% of water, based on the total mass of the slag killing material, and charging it into slag in the slag ladle. The refractory powder with a grain size of ≤1 mm may be produced by grinding the refractory waste into a grain size of ≤1 mm, or the refractory powder with a grain size of ≤1 mm, which is incidentally produced at crushing, classification treatment, etc. of refractory waste, may be used. COPYRIGHT: (C)2008,JPO&INPIT