高炉、热风炉用低蠕变高铝砖系我厂采用优质高铝矾土,添加抗蠕变改性材料经高压成型高温烧成生产的适用于高炉、热风炉炉膛内衬的低蠕变耐火材料。
Low creep high-alumina brick whose raw material is excellent high-alumina bauxite and anti-creep modified material is produced by means of high pressure formation and high temperature burning , which can be used as low creep refractory of the inner lining of blast furnace and hot-blast stove .
指标/牌号 | 低蠕变高铝砖 | 复合莫来石砖 | 堇青石砖 | 低蠕变粘土砖 | 致密粘土砖 |
H-HD | H-HL | H-LL | H-LLG | H-JL | H-HN | H-LN | H-VN |
Al2O3 % | 80±5 | 75±5 | 65±5 | 65±5 | 55±5 | 42±5 | 40±5 | 42±5 |
Fe2O3 % | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.0 | ≤1.5 | ≤1.5 | ≤2.0 | ≤1.5 |
MgO % | | | | | | ≤2.0 | | |
显气孔率 % | ≤21 | ≤20 | ≤21 | ≤20 | ≤25 | ≤22 | ≤24 | ≤16 |
体积密度
g/cm3 | 2.7 | 2.7 | 2.6 | 2.6 | 2.3 | 2.2 | 2.1 | 2.3 |
常温耐压强度Mpa | ≥55 | ≥60 | ≥55 | ≥70 | ≥40 | ≥40 | ≥30 | ≥45 |
耐火度℃ | ≥1850 | ≥1790 | ≥1790 | ≥1790 | | ≥1750 | ≥1730 | ≥1750 |
荷重软化温度0.2Mpa ℃ | | ≥1600 | ≥1600 | ≥1600 | ≥1400 | ≥1400 | ≥1350 | ≥1400 |
蠕变率%(50h) | 1500℃≤0.8 | 1400℃≤0.6 | 1300℃≤0.8 | | | 1200℃≤1.0 | 1100℃≤1.0 | |
热震稳定性次数 | ≥6 | ≥6 | ≥25 | 1200℃≥20 | | | | |
热膨胀率% | | | 1300℃≤0.8 | | | | | |
重烧线变化率%2h | | 1500℃
±0.1 | 1500℃
±0.1 | | 1450℃
±0.2 | 1450℃
0-0.4 | 1450℃
0-0.3 | 1450℃ 0-0.4 |