Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of spinel-corundum-aluminate lightweight refractory material
The invention discloses a preparation method of a spinel-corundum-aluminate light-weight refractory material, which comprises the following steps: firstly, simulating a microstructure of sintered magnesia, and constructing a multiphase material which takes magnesium aluminate spinel as a main crystalline phase and calcium aluminate as an intergranular phase and a secondary crystalline phase; and the spinel-calcium aluminate-calcium dialuminate multiphase material with controllable crystal phase distribution and pore composition is prepared. And then, by taking the multiphase material as an aggregate and corundum-spinel as a matrix, carrying out batching, compression molding and high-temperature firing according to a certain grain composition. By introducing the spinel-calcium aluminate-calcium dialuminate multiphase material and by means of calcium ion component migration, the spinel-corundum-aluminate light-weight refractory material with microporous aggregate and densified matrix can be prepared, and the normal-temperature and high-temperature bearing capacities of the material are not lower than (even higher than) heavy refractory materials of the same material. Therefore, the heat insulation performance, the high-temperature bearing performance and the medium erosion resistance of the lightweight refractory material are synergistically improved.
本发明公开了一种尖晶石‑刚玉‑铝酸盐轻量耐火材料的制备方法，首先，模拟烧结镁砂的显微结构，构建以镁铝尖晶石为主晶相，铝酸钙作为晶间相和次晶相的复相材料，制备出晶相分布和气孔组成可控的尖晶石‑铝酸钙‑二铝酸钙复相材料。接着，以该复相材料为骨料，以刚玉‑尖晶石为基质，按照一定的颗粒级配进行配料，压制成型，高温烧成。本发明通过引入尖晶石‑铝酸钙‑二铝酸钙复相材料，借助钙离子组分迁移，能够制备出骨料微孔化而基质致密化的尖晶石‑刚玉‑铝酸盐轻量耐火材料，材料常温和高温承载能力不低于(甚至高于)同材质重质耐火材料。从而使得该类轻量耐火材料保温隔热、高温承载、抗介质侵蚀性能协同提高。
Preparation method of spinel-corundum-aluminate lightweight refractory material
The invention discloses a preparation method of a spinel-corundum-aluminate light-weight refractory material, which comprises the following steps: firstly, simulating a microstructure of sintered magnesia, and constructing a multiphase material which takes magnesium aluminate spinel as a main crystalline phase and calcium aluminate as an intergranular phase and a secondary crystalline phase; and the spinel-calcium aluminate-calcium dialuminate multiphase material with controllable crystal phase distribution and pore composition is prepared. And then, by taking the multiphase material as an aggregate and corundum-spinel as a matrix, carrying out batching, compression molding and high-temperature firing according to a certain grain composition. By introducing the spinel-calcium aluminate-calcium dialuminate multiphase material and by means of calcium ion component migration, the spinel-corundum-aluminate light-weight refractory material with microporous aggregate and densified matrix can be prepared, and the normal-temperature and high-temperature bearing capacities of the material are not lower than (even higher than) heavy refractory materials of the same material. Therefore, the heat insulation performance, the high-temperature bearing performance and the medium erosion resistance of the lightweight refractory material are synergistically improved.
本发明公开了一种尖晶石‑刚玉‑铝酸盐轻量耐火材料的制备方法，首先，模拟烧结镁砂的显微结构，构建以镁铝尖晶石为主晶相，铝酸钙作为晶间相和次晶相的复相材料，制备出晶相分布和气孔组成可控的尖晶石‑铝酸钙‑二铝酸钙复相材料。接着，以该复相材料为骨料，以刚玉‑尖晶石为基质，按照一定的颗粒级配进行配料，压制成型，高温烧成。本发明通过引入尖晶石‑铝酸钙‑二铝酸钙复相材料，借助钙离子组分迁移，能够制备出骨料微孔化而基质致密化的尖晶石‑刚玉‑铝酸盐轻量耐火材料，材料常温和高温承载能力不低于(甚至高于)同材质重质耐火材料。从而使得该类轻量耐火材料保温隔热、高温承载、抗介质侵蚀性能协同提高。
Preparation method of spinel-corundum-aluminate lightweight refractory material
一种尖晶石-刚玉-铝酸盐轻量耐火材料的制备方法
YIN HONGFENG (Autor:in) / JIAN YUNLING (Autor:in) / LIU YUN (Autor:in) / HU YUE (Autor:in) / MA LE (Autor:in) / XIN YALOU (Autor:in) / LIU YUCHI (Autor:in) / YUAN HUDIE (Autor:in)
30.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Lightweight periclase-magnesium aluminate spinel refractory material and preparation method thereof
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024