Low cement castable is a refractory castable material made from a mixture of high-quality raw materials with lower amounts of cement, resulting in lower porosity and permeability, higher density, and better strength and abrasion resistance. It is commonly used in high-temperature industrial applications such as furnace linings, incinerators, and boilers.
| Application | Cement kiln, Other Kiln, Steel Kiln |
|---|---|
| Raw Material | Al₂O₃, CaO, Fe₂O₃ |
| Capacity | |
| Package | Bag |
Low cement castable is a type of refractory castable material made from a mixture of high-quality raw materials, such as alumina, silica, and cement. It contains a lower amount of cement compared to conventional castables, resulting in lower porosity and permeability, higher density, and better strength and abrasion resistance. Low cement castable is commonly used in high-temperature industrial applications, such as furnace linings, incinerators, and boilers, where it can withstand extreme temperatures and chemical exposure. It is also used in the cement, petrochemical, and steel industries.
| Item | RBTZJ-42 | RBTZJ-60 | RBTZJ-65 | RBTZJS-65 | RBTZJ-70 | |
| Working limit temperature （℃） | 1300 | 1350 | 1400 | 1400 | 1450 | |
| 110℃×24h Bulk Density（g/cm3） ≥ | 2.15 | 2.3 | 2.4 | 2.4 | 2.45 | |
| 110℃×24h Cold Bending Strength（MPa） ≥ | 4 | 5 | 6 | 6 | 7 | |
| Cold Crushing Strength（MPa） ≥ | 110℃×24h | 25 | 30 | 35 | 35 | 40 |
| CT℃×3h | 50 1300℃×3h | 55 1350℃×3h | 60 1400℃×3h | 40 1400℃×3h | 70 1400℃×3h | |
| @CT℃×3h Permanent Linear Change（%） | -0.5~+0.5 1300℃ | -0.5~+0.5 1350℃ | 0~+0.8 1400℃ | 0~+0.8 1400℃ | 0~+1.0 1400℃ | |
| Thermal Shock Resistance (1000℃ water) ≥ | ― | ― | ― | 20 | ― | |
| Al2O3（%） ≥ | 42 | 60 | 65 | 65 | 70 | |
| CaO（%） ≤ | 2-3 | 2-3 | 2-3 | 2-3 | 2-3 | |
| Fe2O3（%） ≤ | 2.0 | 1.5 | 1.5 | 1.5 | 1.5 | |
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