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Specifications
High alumina brick 75% alumina High refractoriness under load High compressive strength Low thermal conductivity..... Made
High alumina brick 75%
1) Alumina content: 75%
2) Apparent porosity: ≤23%
3) Cold crushing strength: ≥50mpa
4) Refractoriness: 1790oC
5) Refractoriness under load in 0.2MPa: ≥1520oC
6) Permanent linear change(1500oC×2h): +0.1~-0.4
high alumina brick 75% Detailed Product Description:
high alumina brick75%, silica brick, fire brick, fire clay brick, alumina bubble brick.
High alumina brick 75% Features
1.Resisting high temperature
2.Great bulk density
3.Low iron content
4.Good eroding resistance
High alumina brick 75% Applications:
1. Steel furnaces
2. Iron making furnaces
3. Glass kiln
4. Ceramic tunnel kiln
5. Cement kiln
High alumina brick75%
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 |
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