1.High strength and wear resistance,
2.Good resistance to flake performance,
3. Good thermal shock stability,
4.Scouring resistance,
5.Good hot strength.
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Index | Fire clay | High alumina 1 | High alumina 2 | |
Al2O3 % | 40-45 | 60-65 | 70-75 | |
SiO2 % | 35-40 | 23-30 | 15-20 | |
CaO % | 5-6 | 5-6 | 5-6 | |
Bulk density g/cm3 | 110°C,24h | 2.0-2.1 | 2.4-2.5 | 2.7-2.8 |
1350°C,3h | 2.1-2.15 | 2.5-2.6 | 2.7-2.85 | |
Bending Strength MPa | 110°C,24h | 4.5-6 | 5-6 | 5.5-6 |
1350°C,3h | 6-7 | 6.5-7.5 | 7-8 | |
Compressive strength MPa | 110°C,24h | 30-35 | 40-45 | 45-50 |
1350°C,3h | 45-50 | 50-60 | 55-65 | |
1350°C Reheating linear change % | +(0.1-0.3) | -(0.1-0.3) | -(0.1-0.5) | |
water content to mixture % | 10-12 | 10-12 | 10-12 | |
Service temperature °C | 1350 | 1450 | 1550 |
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