Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Thermal gunning material for RH furnace lower portion groove working lining magnesium-aluminum spinel brick
The invention relates to a thermal gunning material for a RH furnace lower portion groove working lining magnesium-aluminum spinel brick. A purpose of the present invention is to solve the technical problems of high bounce rate, long repair work time and difficult low-silicon smelting during the hot-state repair of the RH furnace lower portion groove working lining magnesium-aluminum spinel brick in the prior art. The thermal gunning material comprises the following raw materials by weight: 35-45% of sintered magnesia, 25-35% of periclase, 13-24% of corundum, 6-8% of sodium nitrate, and 3-4% of Al203 micro-powder. According to the present invention, the thermal gunning material is mainly used for the hot-state repair of the RH furnace lower portion groove working lining magnesium-aluminum spinel brick, wherein the service life of the RH furnace lower portion groove working lining achieves more than 4 times the original service life after the repair, and compared with the bounce rate of the existing gunning material of 20%, the bounce rate of the gunning material of the present invention is reduced to less than or equal to 5% during the thermal repair.
Thermal gunning material for RH furnace lower portion groove working lining magnesium-aluminum spinel brick
The invention relates to a thermal gunning material for a RH furnace lower portion groove working lining magnesium-aluminum spinel brick. A purpose of the present invention is to solve the technical problems of high bounce rate, long repair work time and difficult low-silicon smelting during the hot-state repair of the RH furnace lower portion groove working lining magnesium-aluminum spinel brick in the prior art. The thermal gunning material comprises the following raw materials by weight: 35-45% of sintered magnesia, 25-35% of periclase, 13-24% of corundum, 6-8% of sodium nitrate, and 3-4% of Al203 micro-powder. According to the present invention, the thermal gunning material is mainly used for the hot-state repair of the RH furnace lower portion groove working lining magnesium-aluminum spinel brick, wherein the service life of the RH furnace lower portion groove working lining achieves more than 4 times the original service life after the repair, and compared with the bounce rate of the existing gunning material of 20%, the bounce rate of the gunning material of the present invention is reduced to less than or equal to 5% during the thermal repair.
Thermal gunning material for RH furnace lower portion groove working lining magnesium-aluminum spinel brick
SUN YUJUN (Autor:in) / HONG JIANGUO (Autor:in) / WANG HAIJUN (Autor:in) / TANG HONGLE (Autor:in)
28.10.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2020
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