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Aluminum-titanium composite refractory shaped product for iron-making blast furnace
The invention discloses an aluminum-titanium composite refractory shaped product for an iron-making blast furnace, and belongs to the field of refractory materials for iron-making blast furnaces. Thealuminum-titanium composite refractory shaped product comprises the following components in percentage by mass: 75%-88% of Al2O3, 3%-15% of TiO2, 0.1%-1.0% of Fe2O3, 3%-8% of SiO2 and 0.3%-1.5% of thebalance ingredients. The aluminum-titanium composite refractory product can be used for building blast furnace ceramic cups, iron notch and tuyere linings, cooling wall embedded bricks, refractory linings above tuyeres and the like. The titanium oxide component on the surface of the product is reduced into metallic titanium to form titanium carbonitride covering the surface of the product in a specific carbon-containing, nitrogen-rich and oxygen-deficient reducing atmosphere of an iron-making blast furnace, the high-hardness and high-melting-point titanium carbonitride improves the wear resistance and corrosion resistance of the product, and in a specific atmosphere of the blast furnace, the titanium carbonitride covering layer on the surface of the product can be continuously regeneratedafter being eroded, so that the service life of the furnace lining is prolonged, devices such as cooling equipment and a furnace shell are better protected, and the service life of the blast furnaceis prolonged.
本发明公开一种炼铁高炉用铝钛复合耐火定型制品，属于炼铁高炉用耐火材料领域。所述铝钛复合耐火定型制品的成分组成(质量百分比)为：Al2O3：75％～88％，TiO2：3％～15％，Fe2O3：0.1％～1.0％，SiO2：3％～8％，其余：0.3％～1.5％。本发明的铝钛复合耐火制品可用于砌筑高炉陶瓷杯、铁口和风口内衬、冷却壁镶砖、风口以上耐火内衬等。在炼铁高炉特定的含碳、富氮和缺氧的还原性气氛下，制品表面的氧化钛组分将被还原成金属钛进而形成覆盖在制品表面的碳氮化钛，这些高硬度、高熔点的碳氮化钛提高了制品的耐磨性和耐侵蚀性能，而且，在高炉特定气氛下，制品表面的碳氮化钛覆盖层可以在被侵蚀后不断新生，从而延长炉衬的使用周期，更好地保护冷却设备、炉壳等装置，进而延长高炉寿命。
Aluminum-titanium composite refractory shaped product for iron-making blast furnace
The invention discloses an aluminum-titanium composite refractory shaped product for an iron-making blast furnace, and belongs to the field of refractory materials for iron-making blast furnaces. Thealuminum-titanium composite refractory shaped product comprises the following components in percentage by mass: 75%-88% of Al2O3, 3%-15% of TiO2, 0.1%-1.0% of Fe2O3, 3%-8% of SiO2 and 0.3%-1.5% of thebalance ingredients. The aluminum-titanium composite refractory product can be used for building blast furnace ceramic cups, iron notch and tuyere linings, cooling wall embedded bricks, refractory linings above tuyeres and the like. The titanium oxide component on the surface of the product is reduced into metallic titanium to form titanium carbonitride covering the surface of the product in a specific carbon-containing, nitrogen-rich and oxygen-deficient reducing atmosphere of an iron-making blast furnace, the high-hardness and high-melting-point titanium carbonitride improves the wear resistance and corrosion resistance of the product, and in a specific atmosphere of the blast furnace, the titanium carbonitride covering layer on the surface of the product can be continuously regeneratedafter being eroded, so that the service life of the furnace lining is prolonged, devices such as cooling equipment and a furnace shell are better protected, and the service life of the blast furnaceis prolonged.
本发明公开一种炼铁高炉用铝钛复合耐火定型制品，属于炼铁高炉用耐火材料领域。所述铝钛复合耐火定型制品的成分组成(质量百分比)为：Al2O3：75％～88％，TiO2：3％～15％，Fe2O3：0.1％～1.0％，SiO2：3％～8％，其余：0.3％～1.5％。本发明的铝钛复合耐火制品可用于砌筑高炉陶瓷杯、铁口和风口内衬、冷却壁镶砖、风口以上耐火内衬等。在炼铁高炉特定的含碳、富氮和缺氧的还原性气氛下，制品表面的氧化钛组分将被还原成金属钛进而形成覆盖在制品表面的碳氮化钛，这些高硬度、高熔点的碳氮化钛提高了制品的耐磨性和耐侵蚀性能，而且，在高炉特定气氛下，制品表面的碳氮化钛覆盖层可以在被侵蚀后不断新生，从而延长炉衬的使用周期，更好地保护冷却设备、炉壳等装置，进而延长高炉寿命。
Aluminum-titanium composite refractory shaped product for iron-making blast furnace
一种炼铁高炉用铝钛复合耐火定型制品
XU RUITU (author) / SUN JIALIN (author) / XU XIAOHAN (author) / HE RUSHENG (author) / CAO YONGGUO (author) / WU MIN (author)
2021-01-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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