Phosphate Bonded Alumina Brick
It has better high-temperature characteristics and thermal shock resistance than high-alumina brick
Application
Widely used in the transition zones and firing zones of rotary cement kilns, in the roofs of electric arc furnaces, in aluminum production, and for CFB applications
Description
The phosphate-high alumina bricks produced by our company are manufactured from high-quality high-alumina raw materials using phosphoric acid or aluminum dihydrogen phosphate as a binder. They are formed by high-pressure pressing and undergo heat treatment at 600–800°C. This product is characterized by high cold crushing strength, excellent abrasion resistance, and superior thermal shock resistance.
Specifications
| Item | standard | abrasion-resistant | Special | Composite | ||
|---|---|---|---|---|---|---|
| RSP-75 | RSPA-75 | RSPT-80 | RSPT-85 | dense parts | light parts | |
| Al2O3 % ≥ | 75 | 75 | 80 | 85 | 75 | 55 |
| Fe2O3 % ≤ | 2.1 | 2.1 | 1.8 | 1.8 | 8 | 1.5 |
| Refractoriness °С ≥ | 1770 | 1770 | 1790 | 1790 | 1770 | – |
| Bulk Density g/cm3 ≥ | 2.7 | 2.75 | 2.9 | 3.0 | 2.8 | 1.5 |
| Cold Crushing Strength MPa ≥ | 70 | 75 | 80 | 80 | 75 | 25 |
| Refractoriness Under Load 0.2 MPa °С ≥ | 1350 | 1450 | 1520 | 1550 | 1450 | – |
| Thermal Shock Resistance (1100 °С-water) ≥ | 20 | 20 | 15 | 15 | – | – |
| Cold Crushing Strength MPa (junction of the dense and light parts) ≥ | – | – | – | – | 15 | |
Features
High deformation temperature
Exceptional wear resistance
High Thermal Shock Stability
Applications
- Rotary cement kilns: transition zone, burning zone
- Aluminum industry: bath working zone, wall lining, runner, burner block, flue (melting furnace, holding furnace)
- CFB: mixing chamber, standpipe, flue gas channel
- Lime rotary kiln: for lining
- Zinc oxide rotary kiln: transition zone, high-temperature zone
- Gasifier
- Incinerator