项 目 \ 牌 号 | | 砖块、马蹄形管、匣钵类 | 纯刚玉 | 钛刚玉 | 铬刚玉 | 锆刚玉 | 热电偶管 | 刚玉球 | 纯刚玉砖 | 钛刚玉砖 | 异型制品 | 马蹄管 | | Al2O3 % | ≥98.5 | ≥97.0 | ≥97.0 | 80-65 | ≥98.5 | ≥98.5 | ≥98.5 | ≥97.0 | 90-98.5 | ≥98.0 | | SiO2 % | ≤0.5 | ≤0.5 | ≤0.5 | | ≤0.5 | ≤0.5 | ≤0.4 | ≤0.5 | | ≤0.4 | | Fe2O3 % | ≤0.3 | ≤0.4 | ≤0.5 | | ≤0.3 | ≤0.3 | ≤0.3 | ≤0.4 | | ≤0.3 | | TiO2 % | | ≤0.8 | ≤0.8 | | | | | | | | | Cr2O3 % | | | ≥1.2 | | | | | | | | | ZrO2 % | | | | 16-35 | | | | | | | | K2O % | ≤0.2 | ≤0.3 | ≤0.3 | | ≤0.2 | ≤0.2 | | | | | | 其他杂质 % | ≤0.4 | ≤0.5 | ≤0.5 | | ≤0.4 | ≤0.4 | | | | | | 体积密度 g/cm3 | ≥3.6 | ≥3.6 | ≥3.6 | | ≥3.6 | ≥3.6 | ≥2.9 | ≥3.0 | ≥2.9 | ≥3.0 | | 显气孔率 % | ≤1 | ≤1 | ≤1 | | ≤1 | ≤1 | 20-26 | 20-25 | 28 | 28 | | 常温耐压强度 Mpa | ≥200 | ≥200 | ≥200 | | ≥200 | ≥200 | ≥30 | ≥35 | ≥25 | | | 荷重软化温度 KD ℃ | ≥1700 | ≥1700 | ≥1700 | | ≥1700 | ≥1700 | ≥1700 | ≥1700 | ≥1700 | ≥1700 | | 热震稳定性,次(1100℃ 水冷) | | | | | | | ≥6 | ≥6 | ≥6 | ≥6 | | 用 途 | 用于冶金、化工、科研、军工、航天技术领域 | 用于化肥厂的裂解、转化炉、硬质合金生产等的各种高温窑炉炉衬材料 |
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