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??
Name
??
Brand
AL2O3
> ?????
%
Apparent Porosity
< ????
Mpa
Cold Crushing
Strength
> ????
Refractoriness
> 0.2Mpa????
?????
Reractoriness
Under load
> ??????
(1450?,2h)%
Premanent
linear change ????g/cm3
Bulk density g/cm3
High Alumina Bricks for Hot Blast Stove JB-65 24 49 1790 1500 +0.1
-0.4 -
JB-55 24 44 1770 1470 +0.1
-0.4 -
High Alumina Bricks used for the roof of Steelmaking Electric Furnace JB-80 80 19 80 1790 1550
1500?,2h -0.2 2.7
JB-75 75 19 70 1790 1530 -0.3 2.65
