LOW CARBONACEOUS MAGNESIA CARBON BRICK
PROBLEM TO BE SOLVED: To impart a strength and spalling resistance equivalent to a magnesia carbon brick containing a comparatively large amount of graphite, to a low carbon magnesia-containing fire-resistant unburned brick containing chromium, while preventing occurrence of a carbon pickup and main...
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| creator | HATAE EIICHIRO TSUBOI SATOSHI YOSHIDA SHOJI HOKII TOSHIYUKI FUCHIMOTO HIROYUKI |
| description | PROBLEM TO BE SOLVED: To impart a strength and spalling resistance equivalent to a magnesia carbon brick containing a comparatively large amount of graphite, to a low carbon magnesia-containing fire-resistant unburned brick containing chromium, while preventing occurrence of a carbon pickup and maintaining superior corrosion resistance. SOLUTION: The low carbonaceous magnesia carbon brick is obtained by adding an organic binder to a fire-resistant raw material mixture consisting of 90-99 mass% of a magnesia-based raw material, 0.5-5 mass% of a flake graphite, and 0.3-10 mass% of metal chromium and/or a chromium alloy; kneading; molding and heat-treating; and its fixed carbon content is 0.5-7 mass%. The magnesia-based raw material in the fire-resistant raw material mixture of this low carbon magnesia carbon brick is occupied by particles having particle sizes from larger than 10 μm to 500 μm by 20-50 mass%, and the amount of particles having a particle size of 10 μm or smaller is 5 mass% of the fire-resistant raw material mixture. COPYRIGHT: (C)2007,JPO&INPIT |
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SOLUTION: The low carbonaceous magnesia carbon brick is obtained by adding an organic binder to a fire-resistant raw material mixture consisting of 90-99 mass% of a magnesia-based raw material, 0.5-5 mass% of a flake graphite, and 0.3-10 mass% of metal chromium and/or a chromium alloy; kneading; molding and heat-treating; and its fixed carbon content is 0.5-7 mass%. The magnesia-based raw material in the fire-resistant raw material mixture of this low carbon magnesia carbon brick is occupied by particles having particle sizes from larger than 10 μm to 500 μm by 20-50 mass%, and the amount of particles having a particle size of 10 μm or smaller is 5 mass% of the fire-resistant raw material mixture. 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SOLUTION: The low carbonaceous magnesia carbon brick is obtained by adding an organic binder to a fire-resistant raw material mixture consisting of 90-99 mass% of a magnesia-based raw material, 0.5-5 mass% of a flake graphite, and 0.3-10 mass% of metal chromium and/or a chromium alloy; kneading; molding and heat-treating; and its fixed carbon content is 0.5-7 mass%. The magnesia-based raw material in the fire-resistant raw material mixture of this low carbon magnesia carbon brick is occupied by particles having particle sizes from larger than 10 μm to 500 μm by 20-50 mass%, and the amount of particles having a particle size of 10 μm or smaller is 5 mass% of the fire-resistant raw material mixture. 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SOLUTION: The low carbonaceous magnesia carbon brick is obtained by adding an organic binder to a fire-resistant raw material mixture consisting of 90-99 mass% of a magnesia-based raw material, 0.5-5 mass% of a flake graphite, and 0.3-10 mass% of metal chromium and/or a chromium alloy; kneading; molding and heat-treating; and its fixed carbon content is 0.5-7 mass%. The magnesia-based raw material in the fire-resistant raw material mixture of this low carbon magnesia carbon brick is occupied by particles having particle sizes from larger than 10 μm to 500 μm by 20-50 mass%, and the amount of particles having a particle size of 10 μm or smaller is 5 mass% of the fire-resistant raw material mixture. COPYRIGHT: (C)2007,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ARTIFICIAL STONE BLASTING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CEMENTS CERAMICS CHEMISTRY 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 HEATING KILNS LIGHTING LIME, MAGNESIA MECHANICAL ENGINEERING METALLURGY OVENS PERFORMING OPERATIONS POWDER METALLURGY REFRACTORIES RETORTS SLAG TRANSPORTING TREATMENT OF NATURAL STONE WEAPONS |
| title | LOW CARBONACEOUS MAGNESIA CARBON BRICK |
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