A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Carbon-free unfired magnesia-alumina brick and preparation method thereof
The invention discloses a carbon-free unfired magnesia-alumina brick and a preparation method thereof, and mainly relates to the technical field of novel refractory materials. The carbon-free unfired magnesia-alumina brick comprises 83-95 parts of fused magnesite; 3-10 parts of alumina powder; 1-4 parts of metal aluminum powder; and 1-3 parts of phenolic resin. The aggregate of the magnesia-alumina brick is large-granularity fused magnesite, and the fine powder is a combination of MgO fine powder, Al2O3 powder, metal Al powder and other materials. MgO and Al2O3 in the fine powder are subjected to in-situ solid-phase synthesis to form spinel in a high-temperature use process, and the permanent expansion rate of the spinel and the stability of the spinel make up the spalling phenomenon caused by expansion of magnesia particles. A spinel layer is formed on the surface of the working layer, so that the product has better stripping resistance and slag corrosion resistance in the high-temperature use process, and the added metal aluminum powder or aluminum magnesium alloy powder plays a role in oxidation resistance.
本发明公开了一种无碳不烧镁铝砖及其制备方法，主要涉及耐火新材料技术领域，包括，电熔镁砂83‑95份；氧化铝粉3‑10份；金属铝粉1‑4份；酚醛树脂1‑3份，镁铝砖的骨料为大粒度的电熔镁砂，细粉为MgO细粉、Al2O3粉、金属Al粉等材料组合，在高温使用过程中细粉中的MgO、Al2O3原位固相合成尖晶石，尖晶石的永久膨胀率和尖晶石的稳定性弥补了镁砂颗粒由于膨胀导致的剥落现象，在工作层表面形成了尖晶石层，使产品在高温使用过程中具有较好的耐剥落和抗渣蚀性能，添加的金属铝粉或铝镁合金粉起到抗氧化作用。
Carbon-free unfired magnesia-alumina brick and preparation method thereof
The invention discloses a carbon-free unfired magnesia-alumina brick and a preparation method thereof, and mainly relates to the technical field of novel refractory materials. The carbon-free unfired magnesia-alumina brick comprises 83-95 parts of fused magnesite; 3-10 parts of alumina powder; 1-4 parts of metal aluminum powder; and 1-3 parts of phenolic resin. The aggregate of the magnesia-alumina brick is large-granularity fused magnesite, and the fine powder is a combination of MgO fine powder, Al2O3 powder, metal Al powder and other materials. MgO and Al2O3 in the fine powder are subjected to in-situ solid-phase synthesis to form spinel in a high-temperature use process, and the permanent expansion rate of the spinel and the stability of the spinel make up the spalling phenomenon caused by expansion of magnesia particles. A spinel layer is formed on the surface of the working layer, so that the product has better stripping resistance and slag corrosion resistance in the high-temperature use process, and the added metal aluminum powder or aluminum magnesium alloy powder plays a role in oxidation resistance.
本发明公开了一种无碳不烧镁铝砖及其制备方法，主要涉及耐火新材料技术领域，包括，电熔镁砂83‑95份；氧化铝粉3‑10份；金属铝粉1‑4份；酚醛树脂1‑3份，镁铝砖的骨料为大粒度的电熔镁砂，细粉为MgO细粉、Al2O3粉、金属Al粉等材料组合，在高温使用过程中细粉中的MgO、Al2O3原位固相合成尖晶石，尖晶石的永久膨胀率和尖晶石的稳定性弥补了镁砂颗粒由于膨胀导致的剥落现象，在工作层表面形成了尖晶石层，使产品在高温使用过程中具有较好的耐剥落和抗渣蚀性能，添加的金属铝粉或铝镁合金粉起到抗氧化作用。
Carbon-free unfired magnesia-alumina brick and preparation method thereof
一种无碳不烧镁铝砖及其制备方法
LYU RENXIANG (author) / JI HUAIJIE (author) / LIU ZAICHUN (author)
2021-11-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Unfired alumina-magnesia carbon brick and preparation method thereof
| European Patent Office | 2023
Unfired alumina-magnesia carbon brick and preparation method thereof
| European Patent Office | 2024
Unfired alumina-magnesia carbon brick and preparation method thereof
| European Patent Office | 2022
Unfired magnesia-alumina spinel brick and preparation process thereof
| European Patent Office | 2023