| 摘要 |
PURPOSE:To provide the durable hot-repairing refractory capable of efficiently repairing cracks and gas-leaking parts generated in the wall and end parts of the carbonization chamber of a coke oven and in places close to the coal- charging port. CONSTITUTION:The refractory for hot-repairing comprises 5-20wt.% of powdery sodium silicate having a SiO2/Na2O molar ratio of <=2.6, 1-8wt.% of clay, 0.1-0.6wt.% of a polyalkyl sulfonate salt and 10-20wt.% of alumina fine powder having a particle diameter of <=45mum, and the remaining amount of refractory powder having a particle diameter of <=0.5mm. The hot-repairing refractory gives a viscosity of <=4000cps when mixed with <=20 weight outer percent of water. |
