QINGDAO LAURENT NEW MATERIALS CO.,LTD
QINGDAO LAURENT NEW MATERIALS CO.,LTD The Professional manufacturer of refractory and insulation materials in China.
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High alumina refractory bricks are specialized refractory materials used in industries requiring extreme thermal, mechanical, and chemical stability. These bricks are essential in high-temperature processes like metallurgy, cement manufacturing, glass production, and incineration. Their superior resistance to thermal shock, slag attack, and mechanical stress makes them indispensable in demanding environments.
Laurel high alumina bricks are produced with selected bauxite chamotte using advanced processes and strict quality control. The main mineral components are corundum and mullite phases. It features excellent high-temperature mechanics and chemical corrosion resistance.
1. Resisting high temperature - High alumina bricks can withstand extreme temperatures, usually between 1400°C and 1800°C.
2. Good Chemical Resistance - They are Resistant to corrosion from slags, alkalis, and acids, making them ideal for harsh environments.
3. Excellent Slag Resistance - Suitable for applications in furnaces and kilns exposed to aggressive slags and fluxes.
4. High Strength and Hardness - Offers superior mechanical strength and resistance to wear and abrasion.
5. High Refractoriness Under Load (RUL) - Can maintain structural integrity under heavy loads at high temperatures.
1. Metallurgical Industry
2. Petrochemical & Power Generation
3. Glass & Ceramic Industry
4. Cement & Lime Industry
| Ordinary High Alumina Brick | ||||
|---|---|---|---|---|
| Item | HA60 | HA70 | HA75 | HA80 |
| AL2O3 (%) | ≥60 | ≥70 | ≥75 | ≥75-80 |
| SIO2 (%) | 32 | 22 | 20 | ≥18 |
| Fe2O3 (%) | ≤1.8 | ≤1.8 | ≤1.8 | ≤1.8 |
| Refractoriness (°C) | 1790 | ＞1800 | ＞1825 | ≥1850 |
| Bulk density (g/cm3) | 2.4 | 2.45-2.5 | 2.5 | 2.55-2.6 |
| Softening temperature under load | ≥1470 | ≥1520 | ≥1530 | ≥1550 |
| Apparent porosity (%) | 22 | ＜21 | ＜21 | ＜20 |
| Cold Crushing strength (Mpa) | ≥45 | ≥50 | ≥54 | ≥60 |
| Phosphate Bonded High Alumina Brick | |||
|---|---|---|---|
| Item | LAP75 | LAP77 | LAP85 |
| AL2O3 (%) | ≥75 | ≥77 | ≥80-85 |
| Fe2O3 (%) | ≤3.0 | ≤3.0 | ≤1.8 |
| CaO (%) | ≤0.6 | ≤0.6 | ≤0.6 |
| Refractoriness (°C) | ≥1800 | ≥1800 | ≥1850 |
| Bulk density (g/cm3) | ≥2.65 | ≥2.70 | ≥2.80 |
| Cold crushing strength (MPa) | ≥60 | ≥64 | ≥110 |
| Refractoriness under load (0.2MPa °C) | ≥1350 | ≥1300 | ≥1350 |
| Applications | Used for high-temperature parts lining of cement rotary kiln | Used for badly worn parts of the cement rotary kiln | |
