Forging Industry Wear-Resistant Chrome Aluminum Oxide Bricks, High Pressure Resistance Chrome Aluminum Oxide Bricks, Hongfeng Refractory Materials
Our chrome alumina brick products are made primarily from alumina and electrically melted chromium oxide, mixed with additives such as micro-powders. After blending, molding, and drying, they are fired at high temperatures in a tunnel kiln.
The product features abrasion resistance, heat shock resistance, and resistance to acid and alkali erosion.
Chrome alum brick is mainly used as the lining for carbon black furnaces, copper smelting furnaces, molten pool in glass melting furnaces, guide ways in steel rolling heating furnaces, and steel tapping platforms.
The product's dimensions, physical and chemical specifications, and service life all comply with national standards and parameters.
| Item | Chrome alumina brick | ||
| HF-60 | HF-30 | HF-12 | |
| Cr2O3 % | ≥60 | ≥30 | ≥12 |
| Al2O3 % | ≤38 | ≤68 | ≤80 |
| Fe2O3 % | ≤0.2 | ≤0.2 | ≤0.5 |
| Apparent Porosity % | ≤14 | ≤16 | ≤18 |
| Volume Density g/cm³ | ≥3.63 | ≥3.53 | ≥3.3 |
| Room Temperature Pressure Resistance MPa | ≥130 | ≥130 | ≥120 |
| Initial Softening Temperature for Load | ≥1700 | ≥1700 | ≥1700 |
| (0.2MPa,0.6%) | |||
| Change Rate of Refractory Wire (%) (1600℃×3h) | ±0.2 | ±0.2 | ±0.2
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