| 摘要 |
PROBLEM TO BE SOLVED: To provide a castable refractory for lining of tilting spout for hot metal excellent in resistance against melting loss, abrasion resistance by desiliconizing agent or desiliconized slag (Mn increase) or the like, resistance against constructive spall by slag penetration and resistance against hot spall by thermal shock. SOLUTION: The castable refractory is composed by mixing magnesia of 1-10 wt.%, spinel of 5-30 wt.%, titania fine powder of 0.5-5 wt.%, alumina cement of 1-10 wt.% and remainder of alumina dispersant, thereby silica superfine powder of 0.5-5 wt.% can be made to be contained furthermore. |
