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| High Alumina Bricks for Hot Blast Stove and Low Creep-Deformation High Alumina Bricks |
Name |
Brand |
Al2O3
%
¡Ý
|
Apparent Porosity(£¥)
¡Ü |
Cold
Crushing strength(MPa)
¡Ý |
Refracto-
riness(¡æ)
¡Ý |
0.2Mpa
Refractoriness
under load ¡æ ¡Ý |
Premanent
linear change£¨1450¡æ£¬2h)% |
Creep
%
¡Ü |
High Alumina
Bricks |
RL-65 |
65 |
24 |
49 |
1790 |
1500 |
+0.1
-0.4 |
1 |
RL-55 |
55 |
24 |
44 |
1770 |
1470 |
+0.1
-0.4 |
1 |
RL-48 |
48 |
24 |
39 |
1750 |
1420 |
(1450¡æ,2h)
+0.1
-0.4 |
1 |
|
Low Creep High Aulmina Bricks |
RL-75 |
75 |
18 |
60 |
1 |
1 |
1 |
(1500¡æ,50h)0.8 |
RL-65 |
65 |
19 |
60 |
1 |
1 |
1 |
(1400¡æ,50h)0.8 |
|
Kyanite Bricks |
1 |
75 |
19 |
80 |
1790 |
1580 |
Thermalshock
resistance,times20 |
(1450¡æ,50h)1 |
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| High Alumina Bricks used for the Roof of Steelmking Electric Furnace |
|
ltems |
lndex |
| DL-80 |
DL-75 |
DL-65 |
| Al2O3,% > |
80 |
75 |
65 |
| Refractoriness ¡æ > |
1790 |
1790 |
1790 |
0.2Mpa
Refractoriness under load ¡æ > |
1550 |
1530 |
1520 |
| Permanent linear change % |
1550¡æ£¬2h |
0
-0.3 |
0
-0.4 |
-- |
| 1500¡æ,2h |
-- |
-- |
0-0.4 |
| Apparent Porosity £¥ < |
Bricks for Valut |
19 |
19 |
22 |
| Bricks for Haunch |
21 |
21 |
23 |
| Cold Crushing Stength MPa > |
78.5 |
68.6 |
58.8 |
| Thermal Shock Resistance, times |
£ª |
1 |
1 |
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Note:Provided data ,is not taken as basis of examination. |
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