Henan Hongtai Kiln Refractory Co.,Ltd. |
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Item | Unit | fireclay brick | high alumina brick | ||||||||||
Al2O3 | % | ≥36 % | ≥42 % | ≥42.1 | ≥48 | 55-60 | 70-75 | ≥80 | |||||
Fe2O3 | % | ≤2.5% | ≤2.0% | ≤2.0 | ≤2.0 | ≤2.0 | ≤2.0 | ≤1.8 | |||||
Bulk Density | g/cm3 | ≥2.15 | ≥2.22 | ≥2.29 | ≥2.30 | ≥2.40 | ≥2.5 | 2.60-2.70 | |||||
Apparent Porosity | % | 22-24% | 22-24% | 17-19% | 22-24 | 23-25 | 24-26 | 24-26 | |||||
Cold crushing strength | MPa | ≥25 | ≥35 | ≥42 | ≥35 | ≥44 | ≥48 | ≥55 | |||||
Refractoriness Under Load 0.2 Mpa | ºC | ≥1350 | ≥1380 | ≥1400 | ≥1420 | ≥1450 | ≥1500 | ≥1530 |