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Luoyang Yilong Refractory Co., Ltd.
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Supply high alumina firebricks
High alumina firebricks with unique advanced technology, the temperature of refractoriness under load is normally above 1420~1550°C , which is higher than the fireclay brick and it increases along with the AL2O3 content enhances.
High alumina firebricks characteristices
1. High intensity for pressure
2. Good thermal shock stability
3. Strong abrasion and corrosion resistance
4. High cold crushing strength
5. Excellent abrasion resistance at cold and hot conditions
High alumina firebricks advantage
Good ability of anti-acidity, anti-metal fluid corrode and anti-oxidation.
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High alumina firebricks applications
1. Lower the heat capacity of the furnace
2. Used normally in industry furnaces such as Blast furnace, hot-blast furnace and EAF etc
High alumina firebricks physical and chemical indexes
| Item | LZ-75 | LZ-65 | LZ-55 | LZ-48 |
| Al2O3 % | ≥75 | ≥65 | ≥55 | ≥48 |
| Cold crushing strength ,MPa | ≥54 | ≥49 | ≥44 | ≥40 |
| Apparent porosity ,% | ≤23 | ≤23 | ≤22 | ≤22 |
| Refractoriness under load , °C | ≥1520 | ≥1500 | ≥1470 | ≥1420 |
| Reheating linear change (1500°C,2h) % | +0.1-0.4 | +0.1-0.4 | +0.1-0.4 | (1450°C,2h)+0.1-0.4 |
| Refractoriness °C | >1790 | >1790 | >1770 | >1750 |
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