碳素焙烧炉行业用耐火材料
产品规格
项目 | CBF40-A | CBF40-B | CBF50-A | CBF50-B | CBF60-A | CBF60-B |
Al2O3 / % | 42-53 | 45-53 | ≥45 | ≥50 | ≥60 | ≥58 |
Fe2O3 / % | ≤1.6 | ≤1.6 | ≤1.0 | ≤1.2 | ≤1.1 | ≤1.4 |
TiO2 / % | ≤1.5 | ≤2.0 | ||||
CaO+MgO / % | ≤0.7 | ≤0.7 | ≤0.7 | |||
K2O+Na2O / % | ≤0.8 | ≤0.8 | ≤0.6 | ≤0.8 | ||
耐火度 / ℃ | ≥1750 | ≥1750 | ≥1770 | ≥1750 | ||
显气孔率 / % | 11-19 | 11-19 | ≤16 | ≤14 | ≤18 | 11-19 |
体积密度 (g/cm3) | ≥2.20 | ≥2.20 | ≥2.35 | ≥2.40 | ≥2.45 | ≥2.35 |
常温耐压强度 / MPa | ≥40 | ≥50 | ≥40 | ≥60 | ≥70 | ≥60 |
荷重软化温度 | T0.5≥1450 | T0.5≥1490 | T0.5≥1470 (示差法) | T0.5≥1500 | T0.5≥1600 | T0.5≥1600 |
重烧线变化率 % | 1450℃×2h +0.1 ~ -0.1 | 1450℃×2h +0.1 ~ -0.1 | 1600℃×2h ±0.2 | |||
蠕变率 0.2Mpa,(0-25h) % | 1280℃ ≤0.4 | 1280℃ ≤0.25 | 1280℃×(14-24)h ≤0.007 | 1350℃×(20-50)h ≤0.007 | 1280℃ ≤0.1 | |
高温抗折强度 MPa 1350℃×0.5hr | ≥4 | ≥4 | ≥6 | 1370℃×0.5hr ≤0.007 | ≥6 | |
线膨胀率 1000℃ % | ≤0.7 | ≤0.7 | ≤0.65 |