PERICLASE-CHROME HIGH REFRACTORY PRODUCTS FOR LAYING OF ARCHES OF STEELMAKING FURNACES ACCORDING TO ACCORDING TO DSTU 2573-94 (GOST 10888-93)
PHSS
High-refractory burnt periclase-chrome products are used for melting space arch of open-hearth furnaces with the capacity of 200-300 t, operating with moderate relative intensity of bath lancing (7-10m3/(t·h)).The products are laid on wooden pallet, laid with cardboard sheets, protected with cardboard angles along the perimeter, wrapped with stretch-film and bundled with polypropylene strip.
| Parameter description | Value |
|---|---|
| Type | magnesia spinel |
| Group | periclase-chrome (MgO ≥ 60%, Cr2O3 4-20%) |
| Refractoriness value | high fire resistance (1770 to 2000°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 arches of open-hearth furnaces |
| Reference document for product properties | Periclase-chrome high refractory products for laying of arches of steelmaking furnaces according to according to DSTU 2573-94 (GOST 10888-93) |
| Reference documents for product dimensions | Periclase-chrome high refractory products for laying of arches of steelmaking furnaces according to DSTU 2573-94 (GOST 10888-93) |
| Parameter description | Value |
|---|---|
| Additional linear shrinkage, %, not more than, at temperature, °С | (1650°C) 0,9 |
| Compression ultimate strength, N/mm2, not less than | 27,5 |
| Cr2O3, % | 7-15 |
| Fusion point, °С, not less than | 1520 |
| Interconnected porosity, %, not more than | 22 |
| MgO, % | ≥ 65 |
| Thermal resistance, thermal cycles, not less than | 3 (1300°C) |
| Form | Article No. | Additional information | Photo |
|---|---|---|---|
| radial double-sided feather-edged brick | No.35 | ||
| edge double-sided feather-edged brick | No.28 | ||
| No.29 | |||
| No.30 | |||
| No.31 | |||
| No.32 | |||
| No.33 | |||
| No.34 | |||
| front double-sided feather-edged brick | No.10 |  | |
| No.11 | |||
| No.12 | |||
| No.9 | |||
| straight brick | No.1 | ||
| No.2 | |||
| pyramidal sided feather-edged brick | No.42 |
| Form | Article No. | Dimension, mm | Drawing |
|---|---|---|---|
| radial double-sided feather-edged brick | No.35 | L = 230 B = 115 B1 = 93 S = 65 |  |
| edge double-sided feather-edged brick | No.28 | L = 230 B = 115 S = 68 S1 = 45 | |
| No.29 | L = 230 B = 115 S = 65 S1 = 55 | ||
| No.30 | L = 230 B = 150 S = 65 S1 = 55 | ||
| No.31 | L = 300 B = 150 S = 65 S1 = 55 | ||
| No.32 | L = 300 B = 150 S = 75 S1 = 55 | ||
| No.33 | L = 300 B = 150 S = 75 S1 = 65 | ||
| No.34 | L = 300 B = 150 S = 90 S1 = 80 | ||
| front double-sided feather-edged brick | No.10 | L = 230 B = 115 S = 65 S1 = 55 |  |
| No.11 | L = 300 B = 150 S = 75 S1 = 68 | ||
| No.12 | L = 300 B = 150 S = 85 S1 = 68 | ||
| No.9 | L = 230 B = 115 S = 65 S1 = 45 | ||
| straight brick | No.1 | L = 230 B = 115 S = 65 |  |
| No.2 | L = 300 B = 150 S = 75 | ||
| pyramidal sided feather-edged brick | No.42 | L = 230 B = 115 B1 = 93 S = 65 S1 = 55 |