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1)high refractoriness
(2)good anti alkaline/acid erosions
(3)strong strength under high temperature and good thermal shock
|
ITEM NO. |
SF-L50 |
SF-L55 |
SF-L60 |
SF-L65 |
SF-L68 |
SF-L70 |
SF-L75 |
SF-L80 |
SF-L85 |
|
AL2O3 |
50% |
55% |
60% |
65% |
68% |
70% |
75% |
80% |
85% |
|
Fe2O3 |
2% |
2% |
2% |
2% |
2% |
2% |
2% |
2% |
2% |
|
Refractoriness °C |
1730°C |
1750°C |
1760°C |
1770°C |
1790°C |
1790°C |
1790°C |
1790°C |
1790°C |
|
refractoriness under load °C |
1350°C |
1400°C |
1450°C |
1480°C |
1490°C |
1500°C |
1510°C |
1530°C |
1540°C |
|
Linear change after reheating |
1400°C,2h +0.1/-0.4 |
1450°C,2h +0.1/-0.4 |
1450°C,2h +0.1/-0.4 |
1500°C,2h +0.1/-0.4 |
1500°C,2h +0.1/-0.4 |
1500°C,2h +0.1/-0.4 |
1500°C,2h +0.1/-0.4 |
1500°C,2h +0.1/-0.4 |
1500°C,2h +0.1/-0.4 |
|
APP % |
24% |
25% |
25% |
25% |
24% |
24% |
24% |
23% |
23% |
|
CCS kg/cm2 |
250 kg/cm2 |
300 kg/cm2 |
350 kg/cm2 |
370 kg/cm2 |
400 kg/cm2 |
400 kg/cm2 |
450 kg/cm2 |
500 kg/cm2 |
600 kg/cm2 |
|
BD g/cm3 |
2.20 g/cm3 |
2.30 g/cm3 |
2.35 g/cm3 |
2.35 g/cm3 |
2.40 g/cm3 |
2.45 g/cm3 |
2.50 g/cm3 |
2.60 g/cm3 |
2.78 g/cm3 |
