| 摘要 |
1. Tap-hole plugging mixture for blast furnaces, electric furnaces and other melting apparatuses comprising basic mineral constituents, carbonaceous materials and binders, characterized in that it is formed of 70-80% of basic mineral constituents such as refractory clays or refractory aggregates having a high mechanical and pyroscopic strength, 5 to 15% of a carbonaceous material of vegetal origin from which the volatil noxious constituents have been eliminated, 15 to 25% of binders composed of glycerol and setting accelerator completing the bonding effect of glycerol. |
