Phosphate High Alumina Bricks develop high mechanical strength at ambient temperature through the chemical reaction between phosphate and high alumina aggregates, enabling rapid deployment after construction.
As the temperature increases, the phosphate bond gradually converts into a ceramic bond, further enhancing high-temperature performance and structural stability.
Compared with traditional fired high alumina bricks, these bricks offer superior construction flexibility and early strength, making them particularly suitable for industrial furnaces and kilns that require short maintenance periods and rapid production recovery.
Our PG-75 and PG-80 phosphate high-alumina bricks feature:
High hot strength and low creep
High mechanical load capacity
Excellent wear resistance
Good thermal shock stability
They have demonstrated outstanding performance in firing and transition zones of electric furnace tops, reverberatory furnaces, steel ladles, and cement rotary kilns.
|
Project |
Unit |
Indicators |
|
|
HX-PG-75 |
HX-PG-80 |
||
|
Al2O3 ≥ |
% |
75 |
80 |
|
Fire Resistance ≥ |
℃ |
1770 |
1770 |
|
Room Temperature Compressive Strength ≥ |
MPa |
60 |
80 |
|
0.2MPa Load Softening Start Temperature ≥ |
℃ |
1450 |
1500 |
|
Thermal Shock Stability (1100℃ Water Cooling) |
Second-rate |
20 |
20 |
|
Bulk Density ≥ |
g/cm³ |
2.7 |
2.8 |
● High Early Strength and Construction Efficiency
Phosphate-bonded systems harden at ambient temperature, providing high early strength and enabling rapid construction and production.
● Excellent High-Temperature Structural Strength
Forms a stable bonded phase at medium and high temperatures, delivering high hot compressive strength and maintaining structural integrity under load.
● Outstanding Wear Resistance
The dense microstructure ensures stability under material erosion and mechanical abrasion.
● Good Thermal Shock Resistance
Capable of withstanding moderate temperature fluctuations, reducing the risk of spalling and cracking.
●Transition zones of cement rotary kilns
●High-wear zones of industrial boilers
●Metallurgical heating furnaces and heat treatment furnaces
●Furnace lining areas requiring rapid installation and commissioning
●Zones with high wear and high strength requirements
Q1: What are the differences between phosphate high alumina bricks and ordinary high alumina bricks?
A: Phosphate high alumina bricks harden through chemical bonding, providing high early strength and enabling a shorter construction cycle compared with ordinary fired high-alumina bricks.
Q2: Is high-temperature firing required?
A: No. Traditional high-temperature firing is not required; a ceramic bond gradually develops during service.
Q3: What usage environments are suitable?
A: They are suitable for medium- and high-temperature applications, especially in zones with high wear, mechanical stress, or limited construction time.
Q4: Are they resistant to alkali corrosion?
A: In strongly alkaline environments, careful evaluation is required. Use is recommended only after technical confirmation.
Q5: Are customized specifications supported?
A: Yes. Custom shapes and sizes can be produced according to furnace type and drawing requirements.
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