Main Data
See also
Oxide-carbon Refractories
Oxide-carbon Refractories and carbon-free refractories for working lining of steel ladles.
JSC «BRP» proposes oxide-carbon (differentiated by carbon content) and carbon-free (for melting of low-carbon steel grades) refractories for working lining of steel ladles.
Appropriate refractory materials are proposed for different working lining areas of steel-teeming ladle:
- over slag belt - periclase-spinel-carbonaceous bricks (1) of PShU-45М grade with specially pressed-in metal straps of 1.0-1.5 mm thickness for bonding refractories between each others during operation;
- slag belt - PU-1, PU-2, PU-1К, PU-6, PU-6К, PU-5 (2) periclase-carbonaceous refractories (3) with high carbon content;
- walls in metal area – PU-2, PU-3, PShU-45, PShU-50, KPU-60 (4), KPU-65, KPU-68, KPU-70;
- walls in reinforcing area (5) - KPU-70, KPU-75, KPU-80, PU-4; - bottom - PU-4, KPU-70;
- bottom in reinforcing area (7) - KPU-75, KPU-80, KPU-60.
Technical characteristics
| Rate for grades | |||||
|---|---|---|---|---|---|
| PShU-45 | PShU-50* | PShU-50 А | PShU-65* | PShU-65 А | |
| Technical agree-ment, contract |
|||||
|
Mass fraction of baked substance, %: MgO, minimum Al2O3, minimum |
20 |
18 |
15 |
13 |
13 |
| Mass fraction of carbon С, %, minimum | 9 | 10 | 11 | 10 | 10 |
| Open porosity, %, maximum | 5 | 5 | 4 | 3 | 3 |
| Compressive strength, N/mm2, minimum | 45 | 50 | 55 | 50 | 55 |
| Apparent density, g/cm3, minimum | 3,09 | 3,10 | 3,10 | 3,11 | 3,12 |
* Upon agreement with the consumer, it is possible to manufacture products of PShU-65, PShU-50 grades with minimum compressive strength of 35 N/mm².
| Rate for grade | ||||||
|---|---|---|---|---|---|---|
| KPU-60 | KPU-65 |
KPU-68 |
KPU-70 |
KPU-75 |
KPU-80 | |
| Technical agree-ment, contract |
||||||
|
Mass fraction of baked substance, %: MgO, minimum Al2O3, minimum |
63 |
68 |
70 |
72 |
78 |
82 |
| Mass fraction of carbon С, %, minimum | 9 | 8 | 9 | 7 | 8 | 7 |
| Open porosity, %, maximum | 5 | 5 | 6 | 6 | 7 | 5 |
| Compressive strength, N/mm2, minimum | 50 | 45 | 50 | 50 | 55 | 60 |
| Apparent density, g/cm3, minimum | 3,15 | 3,13 | 3,10 | 3,00 | 3,15 | 3,18 |
| Rate for grade | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| PU-1 | PU-2 | PU-3 | PU-3M | PU-4 | PU-4А | PU-5 | PU-6 | PU-4AS | PU-4В | |
| Technical arrangement, contract | ||||||||||
| Mass fraction of MgO in initial periclase, %, minimum: | 97 | 96 | 95 | 95 | 97 | 97 | 96 | 98 | 98 | 97 |
| Mass fraction of baked substance, MgO, %, minimum | 93 | 95 | 95 | 95 | 94 | 94 | 95 | 92 | 93 | 94 |
| Mass fraction of carbon, %: | 12 | 8 | 9 | 9 | 9 | 8 | maximum 8 | 15 | 10 | 9 |
| Open porosity, %, maximum | 3 | 4 | 4 | 5 | 4 | 3 | 4 | 2 | 3 | 4 |
| Compressive strength, N/mm2, minimum | 40 | 40 | 45 | 40 | 60 | 55 | 45 | 45 | 50 | 55 |
| Temperature of deformation under load, °С, minimum | 1700** | |||||||||
** Upon agreement between the Parties.