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HIGH ALUMINA BRICK HA55
High Alumina Brick HA-55
Features
1. Low bulk density, low thermal conductivity, good thermal insulation performance.
2. Refractory category allow direct contact of fire, suitable ofr various atmosphere
3. Good integrity with furnace lining, long service life, easy operation, could be shaped freely
Typical Applications
1. Furnaces of metallurgy industry, heat treatment furnace
2. Furnaces of chemical industry and construction industry.
3. Furnace of incineration of garbage, recirculating fluidized bed furnace
Standard sizing: 230 x 114 x 65 mm others up to the client
Features
1. Low bulk density, low thermal conductivity, good thermal insulation performance.
2. Refractory category allow direct contact of fire, suitable ofr various atmosphere
3. Good integrity with furnace lining, long service life, easy operation, could be shaped freely
Typical Applications
1. Furnaces of metallurgy industry, heat treatment furnace
2. Furnaces of chemical industry and construction industry.
3. Furnace of incineration of garbage, recirculating fluidized bed furnace
Standard sizing: 230 x 114 x 65 mm others up to the client
Technical data
Tolerance - Technical Instruction for Bricks Sampling
1. DIMENSIONAL CONTROL
1 - 100 mm: +/- 1 mm; 101 - 200 mm: +/-2 mm; 201 - 300 mm: +/- 3 mm;
Equal Dimension Difference: 1 mm Max.;
Taper: +/- 1 mm Max.
Warpage: +/- 1 mm Max. ( from diagonal line )
| Item | Standard |
| Al2O3(%) | ≥55 |
| SIO2(%) | ≤32 |
| Fe2O3(%) | ≤1.8 |
| Na2O+K2O(%) | <2.3 |
| Refractoriness | 1790 |
| refractoriness under load 0.2mpa(ºC) | 1450 |
| Porosity(%) | 19-22 |
| Bulk density(g/cm3) | 2.30- |
| Cold cushing strength (mpa) | ≥50 |
| Thermal expansion at 1000ºC(%) | ≤0.3 |
| Reheating shrinkingchange(%) 1500ºCX24h | +/-0.3 |
Tolerance - Technical Instruction for Bricks Sampling
1. DIMENSIONAL CONTROL
1 - 100 mm: +/- 1 mm; 101 - 200 mm: +/-2 mm; 201 - 300 mm: +/- 3 mm;
Equal Dimension Difference: 1 mm Max.;
Taper: +/- 1 mm Max.
Warpage: +/- 1 mm Max. ( from diagonal line )
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