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 |
