- In Refractory Brick Lining, normally backup lining is done with Insulating Bricks.
- Insulating Bricks are light weight, with high porosity and low thermal conductivity.
- Thus they help preventing heat loss.
We Supply Quality Insulating Bricks in any Grade and Size.
Physical Requirement of Insulating Bricks as per IS 2042:
| Type 1 Grade A |
Type 2 Grade B |
Type 3 Grade C |
|
| PCE Pyrwnetric conde equivalent | 32 | 27 | |
| Bulk Density g/gm3 Max | 1.00 | 0.90 | 0.75 |
| Apparent Porosity % min | 60 | 60 | 65 |
| Cold Crushing Strength CCS k«/cm2 | 20 | 15 | 7 |
| PLC at service temp% | 1.5 (at 1500 c) |
1.5 (at 1250 c) |
2.0 (at 850) |
Calcium Silicate Blocks and Bricks :
Calcium Silicate Blocks and Bricks are also used in backup lining
Silent Features:
- These blocks are rigid but very light.
- Very low thermal conductivity
- Easy to cut
- They are suitable for temperature upto 12000 C.
- Available in brick size also.
- Shapes and Pipe Sections are also available.
Typical Value of Calcium Silicate Blocks as per ASTM C 533
| Temperature max, | 950 | 1100 |
| Bulk Density Kg/M3 | 220-280 | 270 |
| Compressive Strength : Reduction \r\ thickness not to exceed under a load of Dry 415 kH/m2 Wet after IE IS hours Immersion in water, 17 kN/m2 |
5%
5% |
0.6%
0.9% |
| Thermal Conductivity {W/mK} at 500 C | 0.14 | 0.10 |