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Silicon carbide-magnesium aluminate spinel-aluminum composite refractory material
The invention belongs to the technical field of refractory materials, and relates to a silicon carbide-magnesium aluminate spinel-aluminum composite refractory material. The silicon carbide-magnesiumaluminate spinel-aluminum composite refractory material comprises aggregate and a matrix, wherein the aggregate is silicon carbide particles; the matrix contains aluminum-rich magnesium aluminate spinel fine powder or micro powder; and metal aluminum powder having undergone coating treatment is also added into the matrix. The aggregate, the matrix and a binder are uniformly mixed and then subjected to mechanical pressing, then drying is conducted, and sintering is performed at the highest temperature of 1500-1600 DEG C in a carbon-buried atmosphere to obtain the silicon carbide-magnesium aluminate spinel composite refractory material with silicon carbide as a main crystalline phase and magnesium aluminate spinel and corundum as secondary crystalline phases. According to the invention, thepreservation difficulty of a green body sample of the material is reduced, the high-temperature mechanical strength of the material is improved, and the material has the advantages of high thermal shock stability, good coal cinder erosion resistance, low production cost and the like.
本发明属于耐火材料技术领域，涉及一种碳化硅‑镁铝尖晶石‑铝复合耐火材料。涉及的一种碳化硅‑镁铝尖晶石‑铝复合耐火材料包括骨料和基质；其骨料为碳化硅颗粒；基质中包含富铝镁铝尖晶石细粉或微粉；基质中还加入了经包覆处理的金属铝粉；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最高温度1500℃～1600℃烧成制得以碳化硅为主晶相，镁铝尖晶石和刚玉为次晶相的碳化硅‑镁铝尖晶石复合耐火材料。本发明降低了该制品生坯样品的保存难度，提升了材料的高温力学强度，并同时具有热震稳定性高、抗煤渣侵蚀性好、生产成本低廉等优点。
Silicon carbide-magnesium aluminate spinel-aluminum composite refractory material
The invention belongs to the technical field of refractory materials, and relates to a silicon carbide-magnesium aluminate spinel-aluminum composite refractory material. The silicon carbide-magnesiumaluminate spinel-aluminum composite refractory material comprises aggregate and a matrix, wherein the aggregate is silicon carbide particles; the matrix contains aluminum-rich magnesium aluminate spinel fine powder or micro powder; and metal aluminum powder having undergone coating treatment is also added into the matrix. The aggregate, the matrix and a binder are uniformly mixed and then subjected to mechanical pressing, then drying is conducted, and sintering is performed at the highest temperature of 1500-1600 DEG C in a carbon-buried atmosphere to obtain the silicon carbide-magnesium aluminate spinel composite refractory material with silicon carbide as a main crystalline phase and magnesium aluminate spinel and corundum as secondary crystalline phases. According to the invention, thepreservation difficulty of a green body sample of the material is reduced, the high-temperature mechanical strength of the material is improved, and the material has the advantages of high thermal shock stability, good coal cinder erosion resistance, low production cost and the like.
本发明属于耐火材料技术领域，涉及一种碳化硅‑镁铝尖晶石‑铝复合耐火材料。涉及的一种碳化硅‑镁铝尖晶石‑铝复合耐火材料包括骨料和基质；其骨料为碳化硅颗粒；基质中包含富铝镁铝尖晶石细粉或微粉；基质中还加入了经包覆处理的金属铝粉；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最高温度1500℃～1600℃烧成制得以碳化硅为主晶相，镁铝尖晶石和刚玉为次晶相的碳化硅‑镁铝尖晶石复合耐火材料。本发明降低了该制品生坯样品的保存难度，提升了材料的高温力学强度，并同时具有热震稳定性高、抗煤渣侵蚀性好、生产成本低廉等优点。
Silicon carbide-magnesium aluminate spinel-aluminum composite refractory material
一种碳化硅-镁铝尖晶石-铝复合耐火材料
LI HONGXIA (author) / SHANG XINLIAN (author) / SUN HONGGANG (author) / DU YIHAO (author) / ZHAO SHIXIAN (author) / SI YAOCHEN (author) / XIA MIAO (author) / KANG YINA (author)
2020-09-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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