Sundar Clay Bricks have the charactoristics of high compressive strength in normal temperature, high ability for anti-abrasion during work, low shrinkage degree under high temperature so as to maintaining an integrity of the furnace lining; Low apparent porosity, and Fe2O3 content to reduce the carbon deposit in the blowhole and avoid the bricks broken in case of expansion.
|
Refractoriness ℃ Min. |
1750 |
1750 |
1750 |
1730 |
|
Bulk Density g/cm3 Min. |
2.30 |
2.30 |
|
|
|
Apparent Porosity % Max. |
16 |
18 |
22 |
24 |
|
Cold Crushing Strength MPa Min. |
50 |
50 |
29.4 |
24.5 |
|
Refractoriness under Load ℃ Min. |
1460 |
1430 |
1400 |
1350 |
|
Permanent Linear Change 1400℃x2h % |
-0.3 |
-0.3 |
+0.1~-0.4 |
+0.1~-0.4 |
|
Creep rate 0.2MPax50h % |
1.0 |
|
|
|
|
Thermal Shock Resistance water cooling at 1100℃ |
20 |
|
|
|
|
Al2O3 % Min. |
42 |
40 |
40 |
40 |
|
Fe2O3 % Max. |
2.0 |
2.0 |
2.0 |
2.0 |