P-91
Periclase refractories according to
GOST 4689-94
Burnt periclase products, made of sintered periclase powders are used for laying of bottoms, slopes and walls of open-hearth and electric-steelmaking furnaces, lining of bottoms and walls of ferroalloy furnaces.
The products are laid on wooden pallet, laid with cardboard sheets, protected with cardboard angles along the perimeter, wrapped with stretch-film and wrapped with polypropylene strip.
Technical requirements
| Parameter description | Value |
|---|---|
| CaO, % | ≤ 3 |
| Compression ultimate strength, N/mm2, not less than | 60 |
| Fe2O3, % | ≤ 2,5 |
| Fusion point, °С, not less than | 1550 |
| Interconnected porosity, %, not more than | 22 |
| MgO, % | ≥ 91 |
| SiO2, % | ≤ 3 |
Specification
| Parameter description | Value |
|---|---|
| Type | high-magnesia |
| Group | periclase (MgO ≥ 85%) |
| Refractoriness value | fire resistance (1580 to 1770°С) |
| Porosity degree | average dense (Ptot 20-30%) |
| 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 | for laying of high temperature furnaces |
| Reference document for product properties | Periclase refractories according to GOST 4689-94 |
| Reference documents for product dimensions | Periclase refractories according to GOST 4689-94 |