Low Creep Clay Bricks
- Description
-
The low creep high alumina brick used in hot blast furnace is mainly made of high quality bauxite, white corundum, mullite and "three stones". Combined with compound ultrafine powder and admixture. It is formed by high pressure forming and sintering at high temperature. It is mainly used for the upper masonry of the air furnace. It has the characteristics of high temperature resistance, high compressive strength, high load softening starting temperature, high temperature volume stability and excellent creep performance.
General Properties
Chemical Analysis Item Standard DRN-125 DRN-120 DRN-115 DRN-110 Al2O3 ≥45% ≥42% ≥40% ≥36% Physical Properties
Item Unit Standard DRN-125 DRN-120 DRN-115 DRN-110 Apparent Porosity （%） ≤22（24） ≤22（24） ≤22（24） ≤22（24） Bulk Density (g/cm³) 2.15-2.35 2.00-2.20 2.00-2.20 2.00-2.20 Cold Crushing Strength （MPa） ≥40 ≥35 ≥30 ≥25 Creep Rate T0.2
% ≤0.8
1250℃×50h
≤0.8
1200℃×50h
≤0.8
1150℃×50h
≤0.8
1100℃×50h
Permanent Linear Change （%） -0.3~0.1
1400℃×2h
-0.3~0.1
1350℃×2h
-0.4~0.1
1300℃×2h
-0.4~0.1
1300℃×2h
Keywords：
Refractory materials
Low Creep Clay Bricks
Steel
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