Characteristics of high alumina insulation bricks
| Subject / Class | LZ-80 | LZ-75 | LZ-70 | LZ-65 | LZ-55 | LZ-48 | LZ-75G | LZ-65G | LZ-55G | |
|---|---|---|---|---|---|---|---|---|---|---|
| ω (Al2O3)/% | μ0 ≥ | 80 | 75 | 70 | 65 | 55 | 48 | 75 | 65 | 55 |
| σ | 1.5 | |||||||||
| Apparent porosity /% | μ0 ≤ | 21 (23) | 24 (26) | 24 (26) | 24 (26) | 22 (24) | 22 (24) | 19 | 19 | 19 |
| σ | 1.5 | |||||||||
| Cold crushing strength /MPa | μ0 ≥ | 70 (60) | 60 (50) | 55 (45) | 50 (40) | 45 (40) | 40 (35) | 65 | 60 | 50 |
| Xmin | 60 (50) | 50 (40) | 45 (35) | 40 (30) | 35 (30) | 30 (35) | 55 | 50 | 40 | |
| σ | 15 | |||||||||
| 0.2MPa Fire resistance under load /℃ | μ0 ≥ | 1530 | 1520 | 1510 | 1500 | 1450 | 1420 | 1520 | 1500 | 1470 |
| σ | 13 | |||||||||
| Constant linear change / % | Xmin Xmax | 1500℃*2h -0.4~0.2 | 1450℃*2h -0.4~0.1 | 1500℃*2h -0.2~0.1 | 1450℃*2h -0.2~0 |
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Description of high-glysemite bricks
High alumina brick is a common refractory brick, the main component of this brick is Al2O3. This brick is formed and calcined from bauxite or other raw materials with high alumina content and its refractoriness is above 1770℃. It has the advantage of high thermal stability and good resistance to slag and can be used to make the lining of electric steel furnace, glass furnace, and cement rotary kiln, etc.
Преимущества высокоглиноземистого кирпича
Application of high alumina bricks
Metallurgical and steel industry
High alumina refractory bricks are used for lining metallurgical equipment such as iron furnaces, converters, electric furnaces and continuous casting to withstand high temperatures and chemical attack during metallurgical processes.
Cement and kiln industry
High alumina refractory bricks are used for lining cement kilns, kilns and kiln walls to withstand high temperature and wear.
Glass and ceramics industry
High alumina refractory bricks are used for lining glass furnaces, glass melting furnaces and ceramic firing furnaces and can withstand high temperatures and chemical attack.
Petrochemical industry
High alumina refractory bricks are used for lining refineries, catalytic cracking plants and petrochemical equipment and can withstand high temperatures and aggressive environments.
