COVERING MATERIAL FOR DESILICONIZING RUNNER IN BLAST FURNACE CASTING FLOOR

PURPOSE:To produce a covering material having excellent corrosion resistance and spalling resistance for desiliconizing runner in blast furnace casting floor by adding the specific ratio of small grain and fine powder of Al2O3 quality raw material and super fine powder of refractory to MgO quality r...

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Bibliographische Detailangaben
Hauptverfasser:	NUMATA TETSUSHI, KATAYAMA HARUO, NISHIKAWA CHIHARU, MATSUMURA TAKEO, NISHI MASAAKI, UENO HISAHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA MANUFACTURE OF IRON OR STEEL METALLURGY METALLURGY OF IRON PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL REFRACTORIES SLAG TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	PURPOSE:To produce a covering material having excellent corrosion resistance and spalling resistance for desiliconizing runner in blast furnace casting floor by adding the specific ratio of small grain and fine powder of Al2O3 quality raw material and super fine powder of refractory to MgO quality raw material as main composition. CONSTITUTION:The covering material is composed of adding 10-30wt% total of Al2O3 quality raw material, which combines almost the same quantities for the small grain and the fine powder, 2-8wt% super fine powder of refractory, to the natural and/or artificial MgO quality raw materials as the main component. Further, as the MgO quality raw material, the natural magnesite clinker, electromelting magnesia, etc., containing about >=85wt% MgO is used, and Al2O3 quality raw material containing about 85wt% and as the super fine powder of refractory, SiO2, Al2O3, etc., having