我公司生产的新型出铁沟浇注料，采用超细粉、复合外加剂配制而成，具有强度高、抗侵蚀、耐侵蚀、不粘渣、通铁量高，施工性能好等特点，适合于各容量高炉的生产需要。
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.
| 牌号 | 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 | |
| 体积密度（g/cm3）≥ | 110℃×24h | 2.85 | 2.75 | 2.65 |
| 1450℃×3h | 2.80 | 2.70 | 2.60 | |
| 耐压强度Mpa ≥ | 110℃×24h | 20 | 20 | 15 |
| 1450℃×3h | 80 | 60 | 40 | |
| 冷态折射Mpa ≥ | 110℃×24h | 6 | 4 | 4 |
| 1450℃×3h | 12 | 10 | 6 | |
| 线变化率（%） | 1450℃×3h | 0--+0.5 | 0--+0.5 | 0--+0.5 |
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