A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Tundish permanent lining castable
The invention relates to a refractory material for steelmaking. The invention relates to a tundish permanent lining castable which comprises the following raw materials in percentage by mass: 46-77% of sintered mullite, 10-40% of calcium dialuminate, less than or equal to 3% of calcium aluminate cement and 10.5-12.0% of superfine powder, the superfine powder comprises greater than or equal to 3.5% of silicon micropowder and greater than or equal to 3.5% of alumina micropowder. The mullite-calcium dialuminate is adopted as the main raw material of the tundish permanent lining castable, the thermal shock resistance of the castable is obviously improved by adding the calcium dialuminate (CA2), and meanwhile, the ultralow cement bonding technology is adopted, so that the castable achieves higher strength, the castable cracks less, the content of Al2O3 is higher, and the erosion resistance is ensured. Therefore, the castable has better comprehensive performance, so that the service life of the permanent lining castable is prolonged.
本发明涉及炼钢用耐火材料。一种中间包永久衬浇注料，其原料组成及质量百分比含量为：烧结莫来石：46‑77％，二铝酸钙：10‑40％，铝酸钙水泥：≤3％，超微粉：10.5‑12.0％，超微粉包括硅微粉和氧化铝微粉，其中硅微粉含量≥3.5％。本发明中间包永久衬浇注料的主体原料采用莫来石‑二铝酸钙，通过加入二铝酸钙(CA2)，明显改善了浇注料的抗热震性，同时，采用超低水泥结合技术，使浇注料达到较高的强度，浇注料开裂少，且Al2O3含量较高，有利于确保抗侵蚀性。这样，浇注料的综合性能较好，以利于提高永久衬浇注料的使用寿命。
Tundish permanent lining castable
The invention relates to a refractory material for steelmaking. The invention relates to a tundish permanent lining castable which comprises the following raw materials in percentage by mass: 46-77% of sintered mullite, 10-40% of calcium dialuminate, less than or equal to 3% of calcium aluminate cement and 10.5-12.0% of superfine powder, the superfine powder comprises greater than or equal to 3.5% of silicon micropowder and greater than or equal to 3.5% of alumina micropowder. The mullite-calcium dialuminate is adopted as the main raw material of the tundish permanent lining castable, the thermal shock resistance of the castable is obviously improved by adding the calcium dialuminate (CA2), and meanwhile, the ultralow cement bonding technology is adopted, so that the castable achieves higher strength, the castable cracks less, the content of Al2O3 is higher, and the erosion resistance is ensured. Therefore, the castable has better comprehensive performance, so that the service life of the permanent lining castable is prolonged.
本发明涉及炼钢用耐火材料。一种中间包永久衬浇注料，其原料组成及质量百分比含量为：烧结莫来石：46‑77％，二铝酸钙：10‑40％，铝酸钙水泥：≤3％，超微粉：10.5‑12.0％，超微粉包括硅微粉和氧化铝微粉，其中硅微粉含量≥3.5％。本发明中间包永久衬浇注料的主体原料采用莫来石‑二铝酸钙，通过加入二铝酸钙(CA2)，明显改善了浇注料的抗热震性，同时，采用超低水泥结合技术，使浇注料达到较高的强度，浇注料开裂少，且Al2O3含量较高，有利于确保抗侵蚀性。这样，浇注料的综合性能较好，以利于提高永久衬浇注料的使用寿命。
Tundish permanent lining castable
中间包永久衬浇注料
YAO JINFU (author) / FAN ZHENGJIE (author) / LEE JE-YOUNG (author) / GAO HUA (author)
2023-12-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Tundish working lining castable and preparation method thereof
| European Patent Office | 2021
Light heat insulation type tundish permanent layer castable
| European Patent Office | 2021