EDT
HEAT RESISTANT SILICA REFRACTORIES FOR ELECTRIC-STEELMAKING FURNACES
SPECIFICATION OF UKRAINE 26.2-00191738-005:2006 (WITH AMENDMENTS NO.1, 2)
Heat resistant silica refractories for electric-steelmaking furnaces of EDT grade are intended for electric-steelmaking furnace arches laying.
The products are supplied on wooden pallets interlaid with cardboard, with protected corners, wrapped with stretch film and bundled with plastic strip.
Technical requirements
| Parameter description | Value |
|---|---|
| Al2O3, % | ≤1,5 |
| CaO, % | ≤2,0 |
| Compression ultimate strength, N/mm2, not less than | 50 |
| Density, g/сm3 | 2,32-2,36 |
| Fe2O3, % | ≤1,5 |
| Fire resistance, °С, not less than | 1710 |
| Fusion point, °С, not less than | 1660 |
| Interconnected porosity, %, not more than | 16-19 |
| SiO2, % | ≥95 |
| Thermal expansion (700°С), % | 1,3 |
Specification
| Parameter description | Value |
|---|---|
| Type | siliciferous |
| Group | silica (SiO2 > 93%) |
| Refractoriness value | fire resistance (1580 to 1770°С) |
| Porosity degree | compacted (Ptot 16-20%) |
| Heat treatment method | burnt |
| Molding process | semidry forming |
| Binding type 1 | with inorganic binders |
| Binding type 2 | ceramic |
| Intended purpose | repair/construction |
| scope of application | in electric-steelmaking furnaces with the capacity of more than 50 t |
| Reference document for product properties | Heat resistant silica refractories for electric-steelmaking furnaces Specification of Ukraine 26.2-00191738-005:2006 (with amendments No.1, 2) |
| Reference documents for product dimensions | Silica refractories for electric-steelmaking furnaces according to DSTU 2343-94 (GOST 1566-96) |