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High-aluminum prefabricates

Refractory conventional high-aluminum concrete prefabricates based on andalusite (BW-A/150) and bauxite (BW-B/150)

Symbol Granularity
[mm]
Max. working
temp.[oC]
Min. common
refractoriness [sP]
Min. Al2O3
content [%]

BW-A/150

0-3 / 0-5 1500 177 60

BW-B/150

0-3 / 0-5 1500 179 82

Technical parameters after drying and baking

Symbol after drying in 110 °C after baking in working temperature
Effective porosity
[%]
Apparent density
[g/cm3]
Shear strength
[MPa]
Effective porosity
[%]
Apparent density
[g/cm3]
Shear strength
[MPa]
Contraction (-) [%]

BW-A/150

18 2,35 30 19 2,35 60 - 1

BW-B/150

24 2,6 30 20 2,6 50 - 1,5

Refractory low-cement high-aluminum concrete prefabricates based on andalusite (BW-A/150) and bauxite (BW-B/150)

Symbol Granularity
[mm]
Max. working
temp.[oC]
Min. common
refractoriness [sP]
Min. Al2O3
content [%]

BW-A/150/N

0-3 / 0-5 1500 177 60

BW-B/150/N

0-3 / 0-5 1500 179 80

Technical parameters after drying and baking

Symbol after drying in 110 °C after baking in working temperature
Effective porosity
[%]
Apparent density
[g/cm3]
Shear strength
[MPa]
Effective porosity
[%]
Apparent density
[g/cm3]
Shear strength
[MPa]
Contraction (-) [%]

BW-A/150/N

15 2,6 50 16 2,55 90 - 0,8

BW-B/150/N

22 2,7 45 23 2,8 70 - 1,8

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Refractory and insulating materials • Refractory ceramic products • Refractory concretes • Refractory concrete prefabricates