|
SK-30 |
SK-32 |
SK-34 |
K-30 |
K-35 |
K-43 |
| 1.Refractoriness, SK (Seger Cone) |
30 |
32 |
34 |
30 |
32 |
34 |
| 2.Bulk Density, g/cc |
1.96-2.03 |
2.08-2.14 |
2.19-2.16 |
2.03-2.01 |
2.11-2.18 |
2.21-2.28 |
| 3.Apparent Porosity, % |
21-25 |
19.23 |
18-22 |
18-22 |
16-20 |
15-19 |
| 4.Cold Crushing Strength , kg/cm2 |
200-350 |
250-400 |
300-450 |
250-450 |
250-450 |
300-450 |
| 5.Modulus of Rupture, kg/cm2 |
40-75 |
60-95 |
70-105 |
60-100 |
70-120 |
80-140 |
| 6.Reheat Test, permanent linear change, % |
-0.2 to -0.6 |
-0.1 to -0.4 |
0.0 to -0.3 |
0.0 to -0.4 |
0.0 to -0.2 |
-0.2 to -0.7 |
| after heating at, °C |
1400 |
1400 |
1400 |
1400 |
1400 |
1600 |
| 7.Chemical Analysis, % Approx
; |
62.2 |
57.4 |
50.7 |
62.0 |
57.0 |
50.3 |
| Silica ( SiO2 ) |
| Alumina ( Al2O3
) |
30.0 |
35.1 |
43.0 |
30.5 |
35.7 |
43.7 |
| Iron Oxide ( Fe2O3
) |
2.3 |
2.0 |
1.9 |
2.0 |
1.8 |
1.6 |
| 8.Applications : Uses in heat-related
industries such as back-up lining of boiler, glass furnace, blast furnace,
forging furnace and tunnel kiln. Cooler, cyclone preheater and calcining
zone of cement rotary kiln and safety lining of laddle are applied
as well. |
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