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Magnesium aluminate spinel-silicon carbide-aluminum composite refractory material
The invention belongs to the field of refractory materials, and relates to a magnesium aluminate spinel-silicon carbide-aluminum composite refractory material. The magnesium aluminate spinel-silicon carbide-aluminum composite refractory material comprises aggregate and a matrix, wherein the aggregate comprises fused magnesia-alumina spinel particles and sintered magnesia-alumina spinel particles,and the addition amount of the fused magnesia-alumina spinel particles and the sintered magnesia-alumina spinel particles is 50-70% of the total amount of the raw materials; the matrix is silicon carbide, aluminum oxide and magnesium oxide; metal aluminum powder subjected to coating treatment is further added into the matrix, and the adding proportion is 2-8% of the total mass of the raw materials; and the aggregate, the matrix and a binding agent are uniformly mixed, undergo mechanical pressing molding, are dried, and then are sintered in a carbon-buried atmosphere to obtain the magnesium aluminate spinel-silicon carbide-aluminum composite refractory material. The high-temperature mechanical strength, the thermal shock stability and the coal cinder erosion resistance of the product are improved.
本发明属于耐火材料领域，涉及一种镁铝尖晶石‑碳化硅‑铝复合耐火材料。涉及的镁铝尖晶石‑碳化硅‑铝复合耐火材料包括骨料和基质；骨料为电熔镁铝尖晶石颗粒和烧结镁铝尖晶石颗粒，电熔镁铝尖晶石颗粒和烧结镁铝尖晶石颗粒的加入量为原料总量的50%～70%；基质为碳化硅、氧化铝、氧化镁；基质中还加入了经包覆处理的金属铝粉，加入比例为原料总质量的2%～8%；骨料、基质与结合剂混合均匀后进行机压成型，干燥后在埋碳气氛下烧成制得镁铝尖晶石‑碳化硅‑铝复合耐火材料。本发明提高了制品高温力学强度、热震稳定性以及抗煤渣侵蚀性。
Magnesium aluminate spinel-silicon carbide-aluminum composite refractory material
The invention belongs to the field of refractory materials, and relates to a magnesium aluminate spinel-silicon carbide-aluminum composite refractory material. The magnesium aluminate spinel-silicon carbide-aluminum composite refractory material comprises aggregate and a matrix, wherein the aggregate comprises fused magnesia-alumina spinel particles and sintered magnesia-alumina spinel particles,and the addition amount of the fused magnesia-alumina spinel particles and the sintered magnesia-alumina spinel particles is 50-70% of the total amount of the raw materials; the matrix is silicon carbide, aluminum oxide and magnesium oxide; metal aluminum powder subjected to coating treatment is further added into the matrix, and the adding proportion is 2-8% of the total mass of the raw materials; and the aggregate, the matrix and a binding agent are uniformly mixed, undergo mechanical pressing molding, are dried, and then are sintered in a carbon-buried atmosphere to obtain the magnesium aluminate spinel-silicon carbide-aluminum composite refractory material. The high-temperature mechanical strength, the thermal shock stability and the coal cinder erosion resistance of the product are improved.
本发明属于耐火材料领域，涉及一种镁铝尖晶石‑碳化硅‑铝复合耐火材料。涉及的镁铝尖晶石‑碳化硅‑铝复合耐火材料包括骨料和基质；骨料为电熔镁铝尖晶石颗粒和烧结镁铝尖晶石颗粒，电熔镁铝尖晶石颗粒和烧结镁铝尖晶石颗粒的加入量为原料总量的50%～70%；基质为碳化硅、氧化铝、氧化镁；基质中还加入了经包覆处理的金属铝粉，加入比例为原料总质量的2%～8%；骨料、基质与结合剂混合均匀后进行机压成型，干燥后在埋碳气氛下烧成制得镁铝尖晶石‑碳化硅‑铝复合耐火材料。本发明提高了制品高温力学强度、热震稳定性以及抗煤渣侵蚀性。
Magnesium aluminate spinel-silicon carbide-aluminum composite refractory material
一种镁铝尖晶石-碳化硅-铝复合耐火材料
LI HONGXIA (author) / KANG YINA (author) / ZHAO SHIXIAN (author) / SUN HONGGANG (author) / DU YIHAO (author) / SHANG XINLIAN (author) / SI YAOCHEN (author) / XIA MIAO (author)
2020-09-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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