| <1>Clayfire Brick:
Refractoriness:
≥1750℃
Refractoriness under 0.2MPa load: ≥1450℃
Permanent
linear
0
change %(1500℃×3h):
-0.2
Apparent porosity
(%):
≤13-15
Cold
crushing strength (MPa):
≥58.8
1100℃,water
cooling(times): ≥10
<2>High Alumina Refractor
article:
| Brand |
LZ-75 |
LZ-65 |
LZ-55 |
LZ-48 |
| AL2O3
(%) |
≥75 |
≥65 |
≥55 |
≥48 |
| FE2O3
(%) |
＜2.0 |
| Refractoriness (℃) |
≥1790 |
≥1770 |
≥1750 |
Refractoriness under
0.2MPa load (℃) |
≥1520 |
≥1500 |
≥1470 |
≥1420 |
Permanent
linear change
%(1500℃×2h) |
+0.1
-0.4 |
-- |
Permanent
linear change
%(1450℃×2h) |
-- |
+0.1
-0.4 |
| Apparent porosity
(%) |
20 |
23 |
20 |
| Cold
crushing strength(MPa) |
53.9 |
49.0 |
44.1 |
39.2 |
<3>Phosphate
Article:
| Item |
Phosphate
association
alumina brick |
Ddvp
aluminium
association
alumina brick |
| Refractoriness (℃) |
≥1790 |
≥1790 |
| AL2O3
(%) |
≥75 |
≥77 |
Refractoriness under
0.2MPa load (℃) |
≥1400 |
≥1300 |
| Apparent porosity (%) |
≤20 |
≤20 |
| Cold crushing
strength (MPa) |
≥68.8 |
≥63.7 |
|
