Description
Phosphate bonded high alumina brick is a kind of refractory brick made primarily from high alumina bauxite clinker, corundum, and mullite, using a phosphate chemical bonding process. These bricks feature high compressive strength, low porosity, excellent thermal shock resistance, good wear resistance, and strong anti-spalling performance.
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Specifications
| Item | Grade | |||||
| PA-80 | PA-75 | PA-70 | PA-65 | PA-60 | PA-55 | |
| Al2O3 / (%) | 80 | 75 | 70 | 65 | 60 | 55 |
| Bulk Density / (g/cm³) ≥ | 3 | 2.9 | 2.8 | 2.7 | 2.6 | 2.5 |
| Open Porosity / (%) ≤ | 12 | 14 | 15 | 16 | 17 | 18 |
| CCS / MPa ≥ | 150 | 120 | 100 | 90 | 80 | 70 |
| λ 1000℃ [W/(m·K)] | / | 2 | 2 | 2 | 2 | 2 |
| R.U.L (0.2 MPa T0.6) / ℃ ≥ | 1550 | 1500 | 1480 | 1450 | 1400 | 1350 |
| TSR (1100 ℃~ cold water) ≥ | 10 | 10 | 10 | 10 | 10 | 10 |
| Abrasion Resistance RT / cm3 | 5 | 5 | 5 | 5 | 5 | 5 |
Advantages of Phosphate Bonded Alumina Bricks
- High mechanical strength and excellent wear resistance
- Superior thermal performance (high R.U.L, low creep, thermal shock stability)
- Outstanding corrosion and anti-stripping resistance
- Extended service life
Product Size
| Type | Brick Size | KilnDiameter | |||
| a | b | h | l | D1 | |
| mm | mm | mm | mm | mm | |
| HX-25 | 121 | 97 | 250 | 200 | 2500 |
| HX-30A | 121 | 99 | 270 | 200 | 3000 |
| HX-30B | 108 | 90 | 250 | 200 | 3000 |
| HX-35A | 123 | 104 | 270 | 200 | 3500 |
| HX-35B | 119 | 102 | 250 | 200 | 3500 |
| HX-40D | 120 | 105 | 250 | 200 | 4000 |
| SH-40B | 226 | 200 | 230 | 98 | 4000 |
Applications
Phosphate bonded high alumina bricks are widely used in high-temperature industrial applications, including cement rotary kilns (transition zone, preheat zone, and cooler lining), lime kilns, and rotary kilns for metallurgical solid waste and magnesium production. They are also suitable for steel and non-ferrous metal smelting, as well as ceramics, glass, petroleum, chemical, and power industries.
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