Insulation Bricks - A
Insulation Bricks - B
Technical Index : | ||||||||||
GradeQualification | 23AJM-1300 | 26AJM-1400 | 28AJM-1500 | 30AJM-1550 | 32AJM-1600 | |||||
Type Item | A | B | A | B | A | B | A | B | A | B |
Volume Density (g / cm3) | 0.55 | 0.8 | 0.8 | 0.8 | 0.8 | 0.9 | 0.9 | 1.0 | 1.0 | 1.1 |
Tensile Strength (Mpa) | 0.8 | 1.2 | 1.2; | 1.3 | 1.5 | 1.8 | 1.8 | 2.0 | 1.9 | 2.1 |
Pressure Strength (Mpa) | 1.0 | 1.8 | 1.8 | 2.0 | 2.5 | 3.0 | 3.0 | 4 | 4 | 4.5 |
Linear Change Rate After Heavy Firing (°C X 12h) |
0.3 | 0.3 | 0.4 | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 |
Thermal Conductivity 350°C (W / m o k) |
0.15 | 0.25 | 0.26 | 0.26 | 0.26 | 0.33 | 0.33 | 0.38 | 0.38 | 0.43 |
AI2O3 > (%) | 38 | 42 | 50 | 54 | 62 | 65 | 70 | 74 | 78 | 80 |
Fe2O3 < %) | 1.0 | 1.0 | 1.0 | 0.9 | 0.8 | 0.7 | 0.9 | 0.6 | 0.5 | 0.4 |
Light Weight Alumina Base Porous Bricks for insulation is made of high purity chamotte, by adding fillings of compound ash of aluminium oxide according to different types sintered with high temperature as a result mullite low thermal conductivity brick is directly compounded.
Sr. NO. | PARTICULARS | LIGHT WEIGHT FIRE CLAY | PARTICULARS | PARTICULARS | |
COLD FACE | HOT FACE | HFI** | HFK*** | ||
1 | Service Temp Deg. C | N.A. | N.A. | 1300 | 1400 |
2 | Bulk Densitygm/cc | 0.75-0.80 | 0.85-0.95 | 0.9 | 1.1 |
3 | Apparent Porosity% Min. | 70 | 65 | 60 | 65 |
4 | Cold Compressive Strength Kg/cm² |
15 | 18 | 15 - 20 | 40 |
5 | Thermal conductivity in K.cal/m/hr/ºc (Max) |
0.19 | 0.25 | 0.30-0.33 | 0.40-0.45 |
6 | Parmannent Linear Change Temp Hrs % (Deg. C) (+/-) |
(-) 1.5 AT 1000ºC | (-) 1.5 AT 1000ºC | 1300,2,1 | 1400,2,1 |
7 | Maximum Sage Working Temp. ºC Min. |
1100 | 1200 | N.A. | N.A. |
8 | P.C.E. min OC | N.A. | 27 | N.A. | N.A. |
9 | Al2O3 % Min. | 28 | 28 | 30 | 40 |
10 | SiO2% Min. | 60 | 62 | N.A. | N.A. |
11 | Fe2O3 % Max. | 2 | 2 | 2 | 2 |
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