High Purity Dense Castables
High Purity Dense Castables are refractory castables suitable for high temperature applications. These castables are available in various grades suitable for a specific range of operational conditions.
These refractory castables are hydraulic setting and can be casted or moulded to any shape and can also modified for gunning of furnace linings.
| BRANDS | Refracast A | Refracast K | Refracast K spl | Refracast C | Refracast C spl | Refracast C super |
| Chemical Analysis | ||||||
| Al2O3% Min. | 90 | 60 | 60 | 50 | 50 | 50 |
| Fe2O3% Max. | 0.8 | 1.0 | 1.0 | 1.3 | 1.3 | 1.7 |
| Physical Properties | ||||||
| Service Temp. ˚C | 1750 | 1600 | 1600 | 1500 | 1500 | 1500 |
| Bulk Density gms/cc | 2.8 | 2.2 | 2.10 | 2.10 | 2.10 | 2.25 |
| Water required for casting | 7.5 - 8.5 | 9.5 -10.5 | 9.5 -10.5 | 9.5 -11.5 | 9.5 -10.5 | 10.0 -11.0 |
| Grain Size, mm | 5 | 5 | 5 | 5 | 5 | 5 |
| CCS Kgs/cm2 | ||||||
| At 110 ˚C/24 hrs. | 600 | 380 | 480 | 380 | 450 | 550 |
| At 800 ˚C/3 hrs. | 430 | 280 | 350 | 280 | 360 | 400 |
| At 1100 ˚C/3 hrs. | 330 | 230 | 250 | 220 | 260 | 350 |
| At 1300 ˚C/3 hrs. | - | - | - | 500 | 550 | 500 |
| At 1500 ˚C/3 hrs. | 650 | 520 | 550 | - | - | - |
| Thermal Properties | ||||||
| PLC% @ 800˚C/3 hrs. | - 0.06 | - 0.12 | - 0.12 | - 0.06 | - 0.06 | - 0.06 |
| Heating at 1000˚C/3 hrs. | - 0.12 | - 0.19 | - 0.19 | - 0.12 | - 0.12 | - 0.18 |
| Thermal Conductivity | ||||||
| Kcal/m/hr/˚C at 400˚C HF | 1.15 | 0.81 | 0.83 | 0.75 | 0.78 | 0.81 |
| At 600 ˚C HF | 1.20 | 0.83 | 0.85 | 0.78 | 0.81 | 0.83 |
| At 800 ˚C HF | 1.26 | 0.86 | 0.88 | 0.81 | 0.84 | 0.86 |
