SK-32 / SK-35Monolithic refractories
PCB-seriesRefractory precast blocks
Factory-made precast elements using alumina, phosphate, clay and low-cement binders, including reinforced and anchored designs.
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PRODUCT / PCB-series01 / APPLICATION
Application and operating zones
Blast and hot-blast furnaces, reheating furnaces, electric-furnace roofs, shaft and pellet roasting furnaces.
02 / TYPICAL DATA
Technical specifications
PropertyTypical value
Al₂O₃45-91%
Bulk density2.15-3.00 g/cm³
Cold crushing strength25-45 MPa
GRADE COMPARISON
Grades and technical properties
For each shipment, composition, geometry, and guaranteed properties are fixed in the specification and batch quality certificate.
| Grade | Al₂O₃ | SiO₂ | Cr₂O₃ | SiC + C | Bulk density | Cold crushing strength |
|---|---|---|---|---|---|---|
| PCB-RT1 | 75% | - | - | 18% | 2.98 g/cm³ | 25 MPa |
| PCB-RT2 | 60% | - | - | 14% | 2.85 g/cm³ | 45 MPa |
| PCB-S1 | 45% | 40% | - | 8% | 2.15 g/cm³ | 30 MPa |
| PCB-S2 | 65% | 30% | - | - | 2.40 g/cm³ | 40 MPa |
| PCB-D | 50% | - | - | 5% | 2.43 g/cm³ | 35 MPa |
| PCB-W | 60% | - | - | - | 2.92 g/cm³ | 28 MPa |
| PCB-WK | 91% | - | 7% | - | 3.00 g/cm³ | 30 MPa |
Properties are shown as typical values. The operating grade and guaranteed values are selected for the service conditions and fixed in the supply specification.
