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Bottom Pouring Sets |
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Bottom Pouring Sets / Refractories (B P Sets) are shapes made from different fractions of refractory grog, plastic fire clays and non-plastic clays. The different fractions of these raw materials are mixed and pugged for fully homogeneous mixing. The mixture obtained hence, is then pressed in high capacity presses to give the desired shape and size. These pressed shapes are fired in tunnel kiln at high temperatures of 13000 C. The bottom pouring shapes are generally made in two qualities; 30% alumina and 40% alumina. The bottom pouring sets can also be made in higher alumina grades if required. |
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Special Characteristics:
Perfect shape and sizing
Accurate fitting of male-female combinations
Highly resistant to thermal shocks
Eliminates carbon deposits
Prevents brick failure at high temperatures
Increases life of brick lining to great extent
Withstands the required service temperatures based on quality
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30% Alumina(IS:6) |
40% Alumina (IS:8) |
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Safe Working Temperature |
14000 C |
14500 C |
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Bulk Density |
2 gms/cc |
2 gms/cc |
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Cold Crushing Strength |
200 kg/cm2 |
250 kg/cm2 |
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Appartment Porosity |
30% max. |
30% max. |
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P.C.E (Orton Cone) |
30 |
32 |
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RUL |
1300 ta0 C min. |
1400 ta0 C min. |
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PLC at 13500 C for 5 hrs. |
1% |
1% |
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Size Tolerance |
+/- 2 % |
+/- 2% |
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Alumina as Al2O3 |
30% min. |
40% min. |
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Iron as Fe2O3 |
2.5 % max. |
2.5 % max. |
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Silica as SiO2 |
65% max. |
57% max. |
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Alkalis |
Trace |
Trace |
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