Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Refractory castable for blast furnace iron tapping channels
The invention provides a refractory castable for blast furnace iron tapping channels. The refractory castable is prepared from the following raw materials, by weight, 20-30% of a special-grade high-aluminum clinker; 15-25% brown fused alumina, 5-10% white corundum, 10-15% dense corundum, 15-25% silicon carbide, 2-5% of silicon oxide micro powder; 4-10% of alpha-Al2O3 micro powder; 2%-6% of pretreated aluminum oxide hollow spheres, 2.5-3.5% of metal silicon powder, 4-6% of pure calcium aluminate cement, 1-5% of spherical asphalt, 0.1-0.2% of water-soluble polyvinyl alcohol fibers, 0.1-0.2% of sodium tripolyphosphate and 0.1-0.2% of a water reducing agent FS20, wherein the total amount is 100%. According to the refractory castable for blast furnace iron tapping channels, the pretreated aluminum oxide hollow spheres are introduced, so that the construction fluidity of the castable is improved, the water adding amount is reduced, the compactness and the normal-temperature mechanical strength of the castable are further improved, and the erosion resistance of the castable is improved; and by improving the volume density of the castable, the thermal shock stability is improved.
本发明提供的一种高炉出铁沟用耐火浇注料，按重量百分比，由以下原料制备而成：20～30％的特级高铝熟料、15～25％的棕刚玉、5～10％的白刚玉、10～15％的致密刚玉、15～25％的碳化硅、2～5％的氧化硅微粉、4～10％的α‑Al2O3微粉、2～6％的预处理后的氧化铝空心球、2.5～3.5%的金属硅粉、4～6％的纯铝酸钙水泥、1～5%的球状沥青、0.1～0.2%的水溶性聚乙烯醇纤维、0.1～0.2%的三聚磷酸钠和0.1～0.2%的减水剂FS20；总计100%。本发明的一种高炉出铁沟用耐火浇注料，引入预处理后的氧化铝空心球，提高浇注料施工流动性，减少加水量，进而增加浇注料的致密性和常温力学强度，提高材料的抗侵蚀性；通过浇注料体积密度的提高，提高热震稳定性。
Refractory castable for blast furnace iron tapping channels
The invention provides a refractory castable for blast furnace iron tapping channels. The refractory castable is prepared from the following raw materials, by weight, 20-30% of a special-grade high-aluminum clinker; 15-25% brown fused alumina, 5-10% white corundum, 10-15% dense corundum, 15-25% silicon carbide, 2-5% of silicon oxide micro powder; 4-10% of alpha-Al2O3 micro powder; 2%-6% of pretreated aluminum oxide hollow spheres, 2.5-3.5% of metal silicon powder, 4-6% of pure calcium aluminate cement, 1-5% of spherical asphalt, 0.1-0.2% of water-soluble polyvinyl alcohol fibers, 0.1-0.2% of sodium tripolyphosphate and 0.1-0.2% of a water reducing agent FS20, wherein the total amount is 100%. According to the refractory castable for blast furnace iron tapping channels, the pretreated aluminum oxide hollow spheres are introduced, so that the construction fluidity of the castable is improved, the water adding amount is reduced, the compactness and the normal-temperature mechanical strength of the castable are further improved, and the erosion resistance of the castable is improved; and by improving the volume density of the castable, the thermal shock stability is improved.
本发明提供的一种高炉出铁沟用耐火浇注料，按重量百分比，由以下原料制备而成：20～30％的特级高铝熟料、15～25％的棕刚玉、5～10％的白刚玉、10～15％的致密刚玉、15～25％的碳化硅、2～5％的氧化硅微粉、4～10％的α‑Al2O3微粉、2～6％的预处理后的氧化铝空心球、2.5～3.5%的金属硅粉、4～6％的纯铝酸钙水泥、1～5%的球状沥青、0.1～0.2%的水溶性聚乙烯醇纤维、0.1～0.2%的三聚磷酸钠和0.1～0.2%的减水剂FS20；总计100%。本发明的一种高炉出铁沟用耐火浇注料，引入预处理后的氧化铝空心球，提高浇注料施工流动性，减少加水量，进而增加浇注料的致密性和常温力学强度，提高材料的抗侵蚀性；通过浇注料体积密度的提高，提高热震稳定性。
Refractory castable for blast furnace iron tapping channels
一种高炉出铁沟用耐火浇注料
HU XINTANG (Autor:in) / LI MINGHUI (Autor:in) / TONG SHENGLI (Autor:in) / NI WEI (Autor:in) / NIU SHUNWEI (Autor:in)
10.04.2020
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2024
Blast furnace tapping channel refractory castable and preparation method thereof
| Europäisches Patentamt | 2024