 |
Glass Industry
The list is illustrative and does not cover the full range of
products and some of the improved items which have been recently
developed.
| Mullite Bricks |
A |
B |
C |
| Al2O3 % |
70 |
74 |
60 |
| Fe2O3 % |
0.5 |
0.5 |
2.0 |
| B.D. (gm/cc) |
2.55 |
2.60 |
2.50 |
| A.P. % |
18 |
17 |
20 |
| C.C.S. (kg/cm2) |
500 |
700 |
400 |
| RUL (ta °C) |
1700 |
1700 |
1550 |
| PLC % |
±0.2 |
N.A. |
1.0 |
| at °C for hrs |
1500/2 |
N.A. |
1400/5 |
| Zircon Bricks |
A |
B |
| SiO2 % |
0 |
33 |
| ZrO2 % |
63 |
60 |
| A.P. % |
20 |
19 |
| C.C.S. (kg/cm2) |
500 |
600 |
| RUL (ta °C) |
1600 |
1550 |
| Zircon Mullite Bricks |
A |
B |
| Al2O3 % |
70 |
68 |
| ZrO2 % |
17 |
18 |
| A.P. % |
17 |
21 |
| C.C.S. (kg/cm2) |
800 |
500 |
| RUL (ta °C) |
1650 |
1600 |
| Silica Bricks for Furnace Roof |
A |
B |
| SiO2 % |
96.2 |
95.3 |
| Fe2O3 % |
0.4 |
0.9 |
| Al2O3 % |
0.43 |
0.70 |
| CaO % |
2.5 |
2.5 |
| B.D. (gm/cc) |
1.82 |
1.80 |
| A.P. % |
21 |
22 |
| C.C.S. (kg/cm2) |
410 |
400 |
| RUL (2kg/cm2) |
1690 |
1670 |
| PLC % |
0.15 |
0.20 |
| at °C for hrs |
1450/2 |
1450/2 |
| Basic Bricks for Regenerators |
A |
B |
C |
D |
| MgO % |
88-90 |
94 |
97 |
64 |
| Cr2O3 % |
0 |
0 |
0 |
21 |
| Al2O3 % |
N.A. |
0.3 |
0.2 |
5.0 |
| B.D. (gm/cc) |
N.A. |
2.92 |
2.95 |
3.10 |
| A.P. % |
20 |
17 |
16 |
18 |
| C.C.S. (Kg/cm2) |
350 |
450 |
500 |
400 |
| RUL (ta °C) (2 kg/cm2) |
1550 |
1600 |
1750 |
N.A. |
| PLC % |
0.5 |
0.5 |
0.5 |
0.3 |
| at °C for 2hrs |
1600 |
1600 |
1600 |
1700 |
| Fused-cast refractories for
glass melting furnace |
A |
B |
C |
| Al2O3 % |
49.0 |
49.1 |
46.8 |
| ZrO2 % |
34.8 |
37.3 |
41.0 |
| SiO2 % |
14.8 |
12.3 |
11 |
| BD (gm/cc) |
3.70 |
3.78 |
3.94 |
| AP % |
1 |
1 |
1 |
| MOR (kg/cm2) |
689 |
615 |
559 |
| Linear Thermal Expansion %
(1100°C) |
0.83 |
0.90 |
0.89 |
| Thermal conductivity (K.cal/M.hr)
(1000°C) |
2.4 |
2.5 |
2.7 |
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