T-3 Chrome Alumina Bricks Wholesale | Manufacturer of Standard Model Chrome Alumina Bricks | Hongfeng Refractories
Our chrome alum brick products are primarily made from alumina and electric fused chrome oxide, mixed with additives like micronized powder, then processed through blending, molding, drying, and finally fired at high temperatures in a tunnel kiln.
The product features abrasion resistance, heat shock resistance, and acid-base erosion resistance.
Chrome alumina bricks are mainly used as the lining for carbon black furnaces, copper smelting furnaces, glass furnace molten pools, steel rolling heating furnace slides, 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 Strength MPa | ≥130 | ≥130 | ≥120 |
| Initial Softening Temperature for Load | ≥1700 | ≥1700 | ≥1700 |
| (0.2MPa,0.6%) | |||
| Percentage of reheat wire change (%) (1600℃×3h) | ±0.2 | ±0.2 | ±0.2
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