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Castable for permanent layer of main iron runner of blast furnace
The invention discloses a castable for a permanent layer of a main iron runner of a blast furnace, and mainly solves the technical problem that an existing permanent layer of a main iron runner of a blast furnace is prone to iron penetration, short in service life and high in use cost. The castable for a permanent layer of a main iron runner of a blast furnace comprises the following chemical components in percentage by weight: 46-56% of Al2O3, 25-35% of SiO2, 2-4% of CaO, 15-20% of SiC, 1-2% of C and 0.5-1.0% of phosphite ester, totaling 100%. The compressive strength of a blast furnace main iron runner permanent layer manufactured by the castable disclosed by the invention under the condition of 110 DEG C * 24h is greater than or equal to 40MPa; and the heat conductivity coefficient of the blast furnace main iron runner permanent layer at 550 DEG C is 0.25-0.35 W/m.k. The castable disclosed by the invention is low in cost, and the blast furnace main iron runner permanent layer prepared from the castable disclosed by the invention is long in service life.
本发明公开了一种高炉主铁沟永久层用浇注料，主要解决现有高炉主铁沟永久层易发生穿铁、寿命低以及使用成本高的技术问题。本发明一种高炉主铁沟永久层用浇注料，其化学成分的重量百分比为：Al2O3：46～56％，SiO2：25～35％，CaO：2～4％，SiC：15～20％，C：1～2％，亚磷酸酯0.5～1.0％，各成分的重量百分比之和为100％。本发明浇注料制作的浇注料制作的高炉主铁沟永久层在110℃*24h条件下的耐压强度≥40MPa；高炉主铁沟永久层在550℃的导热系数为0.25‑0.35W/m·k，本发明浇注料成本低，本发明浇注料制作的高炉主铁沟永久层使用寿命长。
Castable for permanent layer of main iron runner of blast furnace
The invention discloses a castable for a permanent layer of a main iron runner of a blast furnace, and mainly solves the technical problem that an existing permanent layer of a main iron runner of a blast furnace is prone to iron penetration, short in service life and high in use cost. The castable for a permanent layer of a main iron runner of a blast furnace comprises the following chemical components in percentage by weight: 46-56% of Al2O3, 25-35% of SiO2, 2-4% of CaO, 15-20% of SiC, 1-2% of C and 0.5-1.0% of phosphite ester, totaling 100%. The compressive strength of a blast furnace main iron runner permanent layer manufactured by the castable disclosed by the invention under the condition of 110 DEG C * 24h is greater than or equal to 40MPa; and the heat conductivity coefficient of the blast furnace main iron runner permanent layer at 550 DEG C is 0.25-0.35 W/m.k. The castable disclosed by the invention is low in cost, and the blast furnace main iron runner permanent layer prepared from the castable disclosed by the invention is long in service life.
本发明公开了一种高炉主铁沟永久层用浇注料，主要解决现有高炉主铁沟永久层易发生穿铁、寿命低以及使用成本高的技术问题。本发明一种高炉主铁沟永久层用浇注料，其化学成分的重量百分比为：Al2O3：46～56％，SiO2：25～35％，CaO：2～4％，SiC：15～20％，C：1～2％，亚磷酸酯0.5～1.0％，各成分的重量百分比之和为100％。本发明浇注料制作的浇注料制作的高炉主铁沟永久层在110℃*24h条件下的耐压强度≥40MPa；高炉主铁沟永久层在550℃的导热系数为0.25‑0.35W/m·k，本发明浇注料成本低，本发明浇注料制作的高炉主铁沟永久层使用寿命长。
Castable for permanent layer of main iron runner of blast furnace
一种高炉主铁沟永久层用浇注料
HONG JIANGUO (author)
2021-11-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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