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Silicon carbide whisker reinforced magnesium oxide-aluminum oxide-carbon baking-free refractory material as well as preparation method and application thereof
The invention provides a silicon carbide whisker reinforced magnesium oxide-aluminum oxide-carbon baking-free refractory material as well as a preparation method and application thereof, and belongs to the technical field of refractory materials. Large-particle aggregate (large-particle-size fused magnesia and medium-particle-size fused magnesia), matrix fine powder (activated aluminum oxide and small-particle-size fused magnesia) and a metal catalyst are uniformly mixed step by step, silicon powder and graphite powder are used as raw materials for preparing the silicon carbide crystal whiskers, and the silicon carbide crystal whiskers are prepared under the action of the metal catalyst. In-situ growth of the silicon carbide whiskers in the fire-free burning-resistant material is achieved, the obtained silicon carbide whiskers are good in dispersity in the material and large in specific surface area, and the prepared silicon carbide whisker reinforced magnesium oxide-aluminum oxide-carbon fire-free refractory material is excellent in mechanical property and high-temperature oxidation resistance.
本发明提供了一种碳化硅晶须增强的氧化镁‑氧化铝‑碳免烧耐火材料及其制备方法和应用，属于耐火材料技术领域。本发明将大颗粒骨料(大粒径电熔镁砂和中粒径电熔镁砂)和基质细粉(活性氧化铝和小粒径电熔镁砂)以及金属催化剂分步混合均匀，以硅粉以及石墨粉作为碳化硅晶须的制备原料，在金属催化剂的作用下，实现了碳化硅晶须在免火耐烧材料中的原位生长，且所得碳化硅晶须在材料中分散性好、比表面积大，制备得到的碳化硅晶须增强的氧化镁‑氧化铝‑碳免烧耐火材料的力学性能和高温抗氧化性能优异。
Silicon carbide whisker reinforced magnesium oxide-aluminum oxide-carbon baking-free refractory material as well as preparation method and application thereof
The invention provides a silicon carbide whisker reinforced magnesium oxide-aluminum oxide-carbon baking-free refractory material as well as a preparation method and application thereof, and belongs to the technical field of refractory materials. Large-particle aggregate (large-particle-size fused magnesia and medium-particle-size fused magnesia), matrix fine powder (activated aluminum oxide and small-particle-size fused magnesia) and a metal catalyst are uniformly mixed step by step, silicon powder and graphite powder are used as raw materials for preparing the silicon carbide crystal whiskers, and the silicon carbide crystal whiskers are prepared under the action of the metal catalyst. In-situ growth of the silicon carbide whiskers in the fire-free burning-resistant material is achieved, the obtained silicon carbide whiskers are good in dispersity in the material and large in specific surface area, and the prepared silicon carbide whisker reinforced magnesium oxide-aluminum oxide-carbon fire-free refractory material is excellent in mechanical property and high-temperature oxidation resistance.
本发明提供了一种碳化硅晶须增强的氧化镁‑氧化铝‑碳免烧耐火材料及其制备方法和应用，属于耐火材料技术领域。本发明将大颗粒骨料(大粒径电熔镁砂和中粒径电熔镁砂)和基质细粉(活性氧化铝和小粒径电熔镁砂)以及金属催化剂分步混合均匀，以硅粉以及石墨粉作为碳化硅晶须的制备原料，在金属催化剂的作用下，实现了碳化硅晶须在免火耐烧材料中的原位生长，且所得碳化硅晶须在材料中分散性好、比表面积大，制备得到的碳化硅晶须增强的氧化镁‑氧化铝‑碳免烧耐火材料的力学性能和高温抗氧化性能优异。
Silicon carbide whisker reinforced magnesium oxide-aluminum oxide-carbon baking-free refractory material as well as preparation method and application thereof
一种碳化硅晶须增强的氧化镁-氧化铝-碳免烧耐火材料及其制备方法和应用
ZHEN QIANG (author) / LI WENHAO (author)
2023-09-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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