| 摘要 |
PURPOSE:To improve high temp. strength without using a sintering assistant by restricting the particle diameter of alumina in a monolithic refractory containing magnesia, alumina and spinel as a main component. CONSTITUTION:This monolithic refractory contains (A) 100 pts.wt. sum consisting of 5-95 pts.wt. magnesia and 95-5 pts.wt. alumina with a small quantity of a binder and a slaking preventive by external multiplication or (B) 100 pts.wt. sum of 5-95 pts.wt. magnesia, 95-5 pts.wt. alumina and 0.1-9.0 pts.wt. spinel with a small quantity of the binder and the slaking preventive by external multiplication, where the alumina having 0.5-1.0mm particle diameter occupies <=50% in the alumina used for (A) and (B). |
