SINTERED REFRACTORY MATERIAL BASED ON SILICON CARBIDE WITH SILICON NITRIDE AS A BINDING MATTER

摘要

1. The use of a refractory molded product based on silicon carbide (SiC), sintered by reaction at a temperature of from 1100 ° C to 1700 ° C with the formation of a binder of silicon nitride Si3N4, where the specified product contains from 0.05 wt.% To 1.5 wt.% boron, where the mass ratio of Si3N4 / SiC is in the range from 0.05 to 0.45, as a device selected from the group consisting of furnace stock or other furnace support structures; block, tiles and pipes of the heat exchanger; block, tiles and pipes of the heat recuperator; heat recovery block, tile and pipe; muffle block and pipe; blocks, tiles and pipes of the incinerator for household waste; block, tiles and pipes of a glass production furnace; block, tiles and pipes of a metallurgical furnace; tiles and pipes of the protective wall; block of glide pipes of a metallurgical furnace; block and pipe immersion heater; heating pipe; thermocouple protective pipe; and pipes for transporting molten metal. ! 2. The use according to claim 1, where the specified molded product is selected from the group consisting of a plate; a column; a capsule; timber; movie; a block, tile or pipe of a glass production furnace that is not in direct contact with molten glass; block, tile or pipe of the boiler furnace; block, tile or pipe of a metal smelting furnace for non-ferrous metals; tiles or pipes of the protective wall; block of glide tubes of the furnace for heat treatment of iron or strip steel or other metallurgical products. ! 3. The use according to claim 1, where the specified molded product has a thickness of less than 1/10 of its length and / or its width. ! 4. The use according to claim 3, where the specified molded product has a thickness