Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Rare earth modified mullite and cordierite multiphase material and preparation method thereof
The invention provides a rare earth modified mullite and cordierite multiphase material and a preparation method thereof. The multiphase material comprises 70-80 parts of fly ash, 10-15 parts of talcum powder, 10-15 parts of alpha-Al2O3 and 2-6 parts of rare earth. Wherein the sum of the coal ash, the talcum powder and the alpha-Al2O3 is 100 parts, and the ratio of the alpha-Al2O3 to the MgO is 4.2-7.5. According to the mullite and cordierite complex phase structure prepared by the invention, the fly ash does not need to be purified and activated, and a high-temperature product is higher in density and lower in heat conductivity coefficient; after rare earth is added for modification, generation of a complex phase can be promoted, the product performance is optimized, the calcination temperature under the same performance is reduced, the volume density of the product is increased, and the porosity and the heat conductivity coefficient are reduced.
本发明提供了一种稀土改性莫来石和堇青石复相材料及其制备方法，复相材料包括粉煤灰70‑80份，滑石粉10～15份，α‑Al2O310～15份，稀土2～6份；其中，粉煤灰、滑石粉和α‑Al2O3总和为100份，α‑Al2O3:MgO的比例在4.2～7.5。本发明所制备的莫来石和堇青石复相结构不需要对粉煤灰进行提纯和活化，且高温产物致密度更高，更低的导热系数；添加稀土改性后可促进复相的生成，优化产品性能，降低同性能下的煅烧温度，增加产品的体积密度，降低孔隙率和导热系数。
Rare earth modified mullite and cordierite multiphase material and preparation method thereof
The invention provides a rare earth modified mullite and cordierite multiphase material and a preparation method thereof. The multiphase material comprises 70-80 parts of fly ash, 10-15 parts of talcum powder, 10-15 parts of alpha-Al2O3 and 2-6 parts of rare earth. Wherein the sum of the coal ash, the talcum powder and the alpha-Al2O3 is 100 parts, and the ratio of the alpha-Al2O3 to the MgO is 4.2-7.5. According to the mullite and cordierite complex phase structure prepared by the invention, the fly ash does not need to be purified and activated, and a high-temperature product is higher in density and lower in heat conductivity coefficient; after rare earth is added for modification, generation of a complex phase can be promoted, the product performance is optimized, the calcination temperature under the same performance is reduced, the volume density of the product is increased, and the porosity and the heat conductivity coefficient are reduced.
本发明提供了一种稀土改性莫来石和堇青石复相材料及其制备方法，复相材料包括粉煤灰70‑80份，滑石粉10～15份，α‑Al2O310～15份，稀土2～6份；其中，粉煤灰、滑石粉和α‑Al2O3总和为100份，α‑Al2O3:MgO的比例在4.2～7.5。本发明所制备的莫来石和堇青石复相结构不需要对粉煤灰进行提纯和活化，且高温产物致密度更高，更低的导热系数；添加稀土改性后可促进复相的生成，优化产品性能，降低同性能下的煅烧温度，增加产品的体积密度，降低孔隙率和导热系数。
Rare earth modified mullite and cordierite multiphase material and preparation method thereof
一种稀土改性莫来石和堇青石复相材料及其制备方法
LUO XUERU (Autor:in) / WANG JIPING (Autor:in) / ZHANG YUNQI (Autor:in) / DENG GUANNAN (Autor:in) / YIN HANG (Autor:in) / YU HAOYANG (Autor:in) / ZHANG GUANGRUI (Autor:in) / LI LU (Autor:in) / KAN LIXIN (Autor:in) / CAO JIANWEI (Autor:in)
30.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Preparation method of modified cordierite-mullite refractory material
| Europäisches Patentamt | 2020
Rare earth doped cordierite ceramic material and preparation method thereof
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2020
Effect of SiC on Microstructures and Properties of Cordierite-Mullite Multiphase Ceramics Material
| British Library Online Contents | 2009
Cordierite-mullite honeycomb ceramic heat accumulator and preparation method thereof
| Europäisches Patentamt | 2015