Description:
Luzhong Magnesia Alumina Spinel Compound Bricks are new developed chrome-free refractories for Cement Rotary Kilns, with excellent performance and energy-saving.
Characteristics:
1.Excellent resistance to chemical attack
2.Excellent thermal-shock resistance
3.Excellent abrasion resistance
4.Low thermal conductivity
5.Reducing the load and mechanical stress to the shell body
Application: Transition zone/ Sintering zone of cement rotary kiln.
Raw Material:
1.Synthetic Light-weighted magnesia spinel,
2. Alumina-magnesia spinel
Physical and chemical index
Chemical composition |
Unit |
Working layer |
Insulating Layer |
MgO |
% |
≥85 |
≥60 |
Al2O3 |
% |
≥10 |
|
|
Physical properties |
Working layer |
Insulating Layer |
Bulk Density |
BD |
g/cm3 |
2.90-3.05 |
2.6-2.7 |
Apparent Porosity |
AP |
% |
17 |
24 |
Thermal Shock Resistance |
TSR - in air at 950 °C |
cycle |
≥100 |
/ |
Refractoriness Under Load |
RUL (ta) |
°C |
≥1700 |
≥1600 |
Thermal Expansion |
TE -at 1000 °C |
% |
1.3 |
1.1 |
Cold Crushing Strength |
CCS |
MPa |
≥40 |
≥35 |
Thermal Conductivity |
TC - at 700 °C |
W/mK |
3.8 |
2.6 |