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BOTTOM POURING SETS
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 oil fired tunnel kiln at high temperatures of 13000 C. These shapes are to meet technical specifications as per IS:6 & IS:8 specifications.
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 Special Characteristics:
• True shape and size.
• Perfect male / female matching collers.
• Neutral in chemical nature.
• Highly resistant to thermal shocks.
• Eliminates carbon deposits.
• Prevents brick failure at high temperatures.
• Increases life of brick lining to great extent.
• Withstand high temperature upto 1450 0 C.
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MATERIAL SPECIFICATIONS
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PHYSICAL PROPERTIES
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As per IS:6
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As per IS:8
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Safe Working Temperature
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14000 C
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14500 C
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Bulk Density
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2 gms/cc
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2 gms/cc
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Cold Crushing Strength
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200 kg/cm2
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250 kg/cm2
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Apparent Porosity
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30% max.
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30% max.
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P.C.E. (Orton Cone)
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30
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32
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RUL
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1300 ta0 C min.
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1400 ta0 C min.
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PLC at 13500 C for 5 hrs.
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1%
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1%
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Size Tolerance
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+/- 2%
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+/- 2%
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CHEMICAL PROPERTIES
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Alumina as Al2O3
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30% min.
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40% min.
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Iron as Fe2O3
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2.5 % max.
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2.5 % max.
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Silica as SiO2
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65% max.
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57% max.
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Alkalis
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Trace
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Trace
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