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High Alumina Bricks

High Alumina Bricks
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A 90

CLASSIFICATION : HIGH – ALUMINA BRICK : 90% ALUMINA
PRODUCT INFORMATION:

  • Pyrometric Cone Equivalent  39- 40 Orton Cone
    Refractoriness 1,880 ° C
    Bulk Density 3,010 – 3,060 kg / m3
    Apparent Porosity 16.0 – 17.0 %
    Cold Crushing Strength 900 – 1,000 kg / cm2
    Modulus of Rupture 150 – 160 kg / cm2
    Reheat Test, Permanent Linear Change
    After Heating at 1 ,400 ° C + 1.00 %

  • at 800 ° C 0.70 %
    at 1,000 ° C 0.80 %
    at 1,200 ° C 0.90 %
    at 1,400 ° C 1.10%

  • Silica (SiO2) 6.7 %
    Alumina (AI2O3) 91.8 %
    Iron Oxide (Fe2O3) 0.3 %
    Calcium Oxide (CaO) 0.1 %
    Alkalines (Na2O + K2O + Li2O) 0.1 %

BTA 85

CLASSIFICATION : HIGH – ALUMINA BRICK : 85 ALUMINA
PRODUCT INFORMATION:

  • Pyrometric Cone Equivalent  > 38 Orton Cone
    Refractoriness 1,840 ° C
    Bulk Density 2,885 – 2,920 kg / m3
    Apparent Porosity 17.0 – 18.0 %
    Cold Crushing Strength 900 – 1,000 kg / cm2
    Modulus of Rupture 200 – 250 kg / cm2

  • at 800 ° C 0.35 %
    at 1,000 ° C 0.50 %
    at 1,200 ° C 0.68 %


  • Silica (SiO2) 8.7 %
    Alumina (AI2O3) 85.0 %
    Iron Oxide (Fe2O3) 1.2 %
    Calcium Oxide (CaO) 0.2 %
    Alkaline (Na2O + K2O + Li2O) 0.2 %

SK 36

CLASSIFICATION : HIGH – ALUMINA BRICK
PRODUCT INFORMATION:

  • Pyrometric Cone Equivalent  35- 36 Orton Cone
    Refractoriness 1,785 ° C
    Bulk Density 2,460 – 2,480 kg / m3
    Apparent Porosity 18.0 – 19.0 %
    Cold Crushing Strength 450 – 480 kg / cm2
    Modulus of Rupture 70 – 80 kg / cm2
    Reheat Test, Permanent Linear Change
    After Heating at 1 ,400 ° C + 0.5 %

  • at 800 ° C 0.40 %
    at 1,000 ° C 0.60 %
    at 1,200 ° C 0.70 %
    at 1,400 ° C 0.82%

  • Silica (SiO2) 35.2 %
    Alumina (AI2O3) 61.1 %
    Iron Oxide (Fe2O3) 1.4 %
    Calcium Oxide (CaO) 0.4 %
    Alkalines (Na2O + K2O + Li2O) 0.5 %

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