
Magnesia Alumina spinel brick
Other name: Mg-Al spinel brick
Model Number: MAJ-75,MAJ-80,MAJ-84
Certification: ISO 9001-14001
Minimum Order Quantity: 5 MT
Mg-Al spinel brick
Description:
The erosion of alkali and sulfur and the rapid cooling and heating phenomenon have exacerbated the damage of refractory materials in the cement rotary kiln transition zone. Magnesia-aluminum spinel bricks are made of high-quality magnesia and high-purity fused magnesia and fused spinel, by a special process. It has excellent chemical resistance and thermal shock resistance, and is one of the indispensable refractory materials in large cement rotary kiln under bad working conditions.
Advantage:
High thermal shock resistance, excellent corrosion resistance, higher high temperature mechanical strength, excellent abrasion resistance, excellent kiln skin performance, chrome-free...
Application:
Rotary kiln transition zone
Mg-Al spinel brick physical and chemical
| Item | MAJ-75 | MAJ-80 | MAJ-84 | |||
| MgO % | 75 | 80 | 84 | |||
| Al₂O₃ % | 8 | 12 | 14 | |||
| Bulk Density g/cm³ | 2.9 | 2.95 | 2.95 | |||
| Cold Crushing Strength Mpa | 45 | 45 | 60 | |||
| Apparent porosity % | 19 | 19 | 18 | |||
| Thermal shock resistance at 1,100 ℃ water cooling | 12 | 15 | 20 | |||
| Refractoriness under load of 0.2Mpa(℃) | 1600 | 1700 | 1750 | |||
| Main Applications | - Metal Line, Free Board for General Ladle - Permanent Line for Ladle (Wall) - firing zone in rotary kiln - upper and lower transition zone for rotary kiln | |||||