Description
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Letochny masses for blast furnaces |
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| Product | Frerroclay 23 | Ferroclay 704 | Frerroclay 55R | |
| Appointment | Letochny weight | Letochny weight | Letochny weight | |
| Chemical composition | SiO2 | 65 - 70% | 65 - 70% | 21% |
| Al2O3 | 8% , min. | 6% , min. | 54% | |
| SiC | 5% , min. | 4% , min. | 19% | |
| Fe2O3 | 1,5% , max. | 1,5% , max. | ||
| With | 9% , min. | 9% , min. | 14% | |
| Volatiles | 12% | |||
| Sheaf type | Organiko - keramichesky | |||
| Size of grain, mm | 0 - 6 | 0 - 6 | 0 - 6 | |
| Density, kg / lt | 1,8 | 1,8 | 2,32 | |
| Properties after roasting at 1000 °C in the recovery atmosphere | Resistance to cold destruction, kg/cm2 at 110 °C | 50 | 50 | 12 |
| Density, kg / lt | 2,15 | |||
| Porosity, % | 20 | |||
| Temperature of use, °C | 1650 | 1650 | 1650 | |
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Letochny weigh