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 bricks Refractory bricks alumina silicate refractory brick for furnace linings
Laurel high alumina bricks are produced with selected bauxite chamotte by advanced process and strict quality control. The main mineral components are corundum and mullite phases. It features excellent high temperature mechanics and chemical corrosion resistance.
| Item | HA60 | HA70 | HA75 | HA80 |
| AL2O3(%) | ≥60 | ≥70 | ≥75 | ≥80 |
| SIO2(%) | 32 | 22 | 20 | ≥18 |
| Fe2O3(%) | ≤2.5 | ≤2.0 | ≤1.8 | ≤1.8 |
| Refractoriness °C | ≥1750 | ≥1770 | ≥1780 | ≥1790 |
| Bulk density,g/cm3 | 2.35-2.4 | 2.45-2.5 | 2.5-2.55 | 2.55-2.6 |
| Softening temperature under load | ≥1450 | ≥1510 | ≥1520 | ≥1530 |
| Apparent porosity,% | ≤24 | ≤23 | ≤22 | ≤21 |
| Cold Crushing strength Mpa | ≥45 | ≥50 | ≥54 | ≥60 |
High alumina brick is a kind of neutral refractory material with alumina content over 48%.
The raw material of high alumina refractory brick is bauxite or other ore with high alumina content.
High alumina brick has high thermal stability and fire resistance above 1700ºC.
1. Resisting high temperature
2. Great bulk density
3. Low iron content
4. Good eroding resistance
1.Steel furnaces
2.Iron making furnaces
3.Glass kiln
4.Ceramic tunnel kiln
5.Cement kiln