high alumina brick
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high alumina brick
1.ISO certified
2.competitive price
3.high performance refractory product
4.refractoriness over 1790
high alumina brick is mainly used in building linings of the hot blast furnaces,blast furnaces,electric furnace roof,reverberatory furnaces,rotary kilnes.
properties:
| Iterms | GL-65 | GL-55 | GL-42-01 | GL-42-02 |
| Al2O3 % | ≥65% | ≥55% | ≥42% | ≥42% |
| Fe2O3 % | ≤2.0% | ≤2.0% | ≤1.6% | ≤1.7% |
| Refractoriness | ≥1790°C | ≥1770°C | ≥1750°C | ≥1750°C |
| Apparent Porosity% | ≤19% | ≤19% | ≤15% | ≤16% |
| Refractoriness under load at 0.2MPa | ≥1500°C | ≥1480°C | ≥1450°C | ≥1430°C |
| cold crushing strength | 58.8 MPa | 49 MPa | 58.8 MPa | 49 MPa |
| Linear Change on reheating | From 0 to-0.2 % | From 0 to-0.2 % | From 0 to-0.2 % | From 0 to-0.3% |
| (1500°C×2h) | (1500°C×2h) | (1450°C×2h) | (1450°C×2h) |
