我公司生產的新型出鐵溝澆注料，采用超細粉、復合外加劑配制而成，具有強度高、抗侵蝕、耐侵蝕、不粘渣、通鐵量高，施工性能好等特點，適合于各容量高爐的生產需要。
Castable for blast furnace tap hole is a common lining material. The tap hole is the channel through which molten iron flows. In the process of use, it is subject to the erosion of molten iron, chemical erosion of iron slag, oxidation of air, thermal shock stress caused by temperature fluctuation, etc. Therefore, the proportion of castable selected should conform to the above characteristics. The new castable produced by our company is made of ultra-fine powder and composite additive. It has the characteristics of high strength, corrosion resistance, corrosion resistance, non sticking slag, high iron flux and good construction performance, which is suitable for the production needs of various capacity blast furnaces.
| 牌號 | GCJ-70 | GCJ-65 | GCJ-55 | |
| Al2O3% | 70 | 65 | 55 | |
| SiC% | 10-15 | 10-15 | 10-15 | |
| F.C% | 2-6 | 2-6 | 2-6 | |
| 體積密度（g/cm3）≥ | 110℃×24h | 2.85 | 2.75 | 2.65 |
| 1450℃×3h | 2.80 | 2.70 | 2.60 | |
| 耐壓強度Mpa ≥ | 110℃×24h | 20 | 20 | 15 |
| 1450℃×3h | 80 | 60 | 40 | |
| 冷態(tài)折射Mpa ≥ | 110℃×24h | 6 | 4 | 4 |
| 1450℃×3h | 12 | 10 | 6 | |
| 線變化率（%） | 1450℃×3h | 0--+0.5 | 0--+0.5 | 0--+0.5 |