Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Tundish spray coating
The invention discloses a tundish spray coating, and relates to the technical field of tundish refractory materials, and the tundish spray coating comprises the following raw material components in percentage by mass: 22-25% of 3-1mm 91 magnesia, 10-20% of 3-1mm alumina, 10-20% of alumina, 10-20% of alumina, and 10-20% of alumina. The raw materials comprise 46%-51% of 94 magnesia with the particle size of 1-0 mm, 16%-20% of 94 magnesia with the particle size of 200 meshes, 1.5%-3% of 95 magnesia with the particle size of 800 meshes, 2%-3% of silica fume, 2%-3% of quick lime, 0.1%-0.15% of silicon whiskers, 0.4%-0.6% of 70 cement, 0.6%-0.8% of sodium metasilicate nonahydrate, 0.3%-0.5% of polyvinyl alcohol, 0.01%-0.03% of a composite water repellent agent, 0.5%-0.7% of paper fibers, 0.01% of organic fibers, 0.02%-0.03% of metal aluminum powder, 0.2%-0.3% of sodium tripolyphosphate and 0.1%-0.3% of citric acid. Compared with the traditional process, the tundish spray coating disclosed by the invention has the advantages that the construction water adding rate is obviously reduced, the comprehensive strength of the spray coating is greatly enhanced, the risk of cracking after drying is reduced, the service life of the spray coating is prolonged, and the construction efficiency, the construction performance and the continuity of continuous casting operation are improved.
本发明公开了一种中间包喷涂料，涉及中间包耐火材料技术领域，所述中间包喷涂料中各原料组份质量百分比为：3‑1mm的91镁砂为22～25％，1‑0mm的94镁砂为46～51％、200目的94镁砂为16～20％、800目的95镁砂为1.5～3％、硅灰为2～3％、生石灰为2～3％、硅晶须为0.1～0.15％、70水泥为0.4～0.6％、九水偏硅酸钠为0.6～0.8％、聚乙烯醇为0.3～0.5％、复合疏水剂为0.01～0.03％、纸纤维为0.5～0.7％、有机纤维为0.01％、金属铝粉为0.02～0.03％、三聚磷酸钠为0.2～0.3％、柠檬酸为0.1～0.3％，本发明的中间包喷涂料与传统工艺相比，施工加水率显著减少，喷涂料的综合强度大大增强，减少了烘干后开裂的风险，延长了喷涂料的使用寿命，施工效率、施工性能和连铸作业的连续性得到提升。
Tundish spray coating
The invention discloses a tundish spray coating, and relates to the technical field of tundish refractory materials, and the tundish spray coating comprises the following raw material components in percentage by mass: 22-25% of 3-1mm 91 magnesia, 10-20% of 3-1mm alumina, 10-20% of alumina, 10-20% of alumina, and 10-20% of alumina. The raw materials comprise 46%-51% of 94 magnesia with the particle size of 1-0 mm, 16%-20% of 94 magnesia with the particle size of 200 meshes, 1.5%-3% of 95 magnesia with the particle size of 800 meshes, 2%-3% of silica fume, 2%-3% of quick lime, 0.1%-0.15% of silicon whiskers, 0.4%-0.6% of 70 cement, 0.6%-0.8% of sodium metasilicate nonahydrate, 0.3%-0.5% of polyvinyl alcohol, 0.01%-0.03% of a composite water repellent agent, 0.5%-0.7% of paper fibers, 0.01% of organic fibers, 0.02%-0.03% of metal aluminum powder, 0.2%-0.3% of sodium tripolyphosphate and 0.1%-0.3% of citric acid. Compared with the traditional process, the tundish spray coating disclosed by the invention has the advantages that the construction water adding rate is obviously reduced, the comprehensive strength of the spray coating is greatly enhanced, the risk of cracking after drying is reduced, the service life of the spray coating is prolonged, and the construction efficiency, the construction performance and the continuity of continuous casting operation are improved.
本发明公开了一种中间包喷涂料，涉及中间包耐火材料技术领域，所述中间包喷涂料中各原料组份质量百分比为：3‑1mm的91镁砂为22～25％，1‑0mm的94镁砂为46～51％、200目的94镁砂为16～20％、800目的95镁砂为1.5～3％、硅灰为2～3％、生石灰为2～3％、硅晶须为0.1～0.15％、70水泥为0.4～0.6％、九水偏硅酸钠为0.6～0.8％、聚乙烯醇为0.3～0.5％、复合疏水剂为0.01～0.03％、纸纤维为0.5～0.7％、有机纤维为0.01％、金属铝粉为0.02～0.03％、三聚磷酸钠为0.2～0.3％、柠檬酸为0.1～0.3％，本发明的中间包喷涂料与传统工艺相比，施工加水率显著减少，喷涂料的综合强度大大增强，减少了烘干后开裂的风险，延长了喷涂料的使用寿命，施工效率、施工性能和连铸作业的连续性得到提升。
Tundish spray coating
一种中间包喷涂料
LI YONGWEI (Autor:in) / LI SHENGCHUN (Autor:in) / WEI ZHENGUO (Autor:in) / LI HONGBO (Autor:in) / LI WEIFENG (Autor:in) / SUN ZHENMENG (Autor:in)
27.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2021