Alumina Castable
These Castables are kinds of refractory which uses bauxite, andalusite, sillimanite etc. as raw material aggregates and then be mixed proportionately with a binding agent. These castables have extremely high strengths and volume stability at all temperatures. Designed with high proportions of alumina, high-alumina castables contain between 60 to 90 percent alumina. They are much more robust at high temperatures than in basic environments. It can be easily applied in critical area where conventional bricks cannot be laid. It’s mainly used for furnace lining of boiler, blast furnace hot blast stove, heating furnace, ceramic kiln and various industrial furnaces.
Advantage
- Good thermal shock resistance
- High compressive strength
- Good corrosion resistance
| Brand | Al2O3% (Min) | Fe2O3% (Max) | Grain Size mm (Max) | Dry Density (g/cc) at 10°C/ 24 hr (Min) | CCS kg/cm² (Min) | PLC % °C (Max) | Refractoriness °C (Min) | Recommended Service Temp. in °C (Max) | Application Area |
|---|---|---|---|---|---|---|---|---|---|
| GIT CAST (NOR) | 45 | 4.0 | 5 | 2.1 | 250 | ±1.0 % @ 1400 /2 hrs | 1580 | 1400 | Foundries, Boilers & Burners |
| GIT CAST (SPL) | 45 | 3.5 | 5 | 2.25 | 350 | ±0.8 % @ 1400 /2 hrs | 1580 | 1400 | Rolling Mill Steel Ladle |
| GIT CAST (SUPER) | 70 | 41 | 5 | 2.4 | 350 | ±1.0 % @ 1400 /2 hrs | 1680 | 1400 | Boilers & Power Plant Foundries, steel ladle & sms roof patching |
| GIT HEAT "C" | 50 | 2.0 | 5 | 2.2 | 350 | ±1.5% @ 1550/2 hrs | 1665 | 1550 | Steel Ladle Backup, Sponge Iron Rotary Kiln, Ladle Lip etc Furnace Walls, Pre-heater of Rotary Kiln etc |
| GIT HEAT "K" | 60 | 1.5 | 5 | 2.4 | 400 | ±1.5 % @ 1550 /2 hrs | 1683 | 1600 | Nozzle cover tip casting, Sponge Iron, Rotary Kiln Inlet etc |
| GIT HEAT "M" | 80 | 1.5 | 5 | 2.65 | 600 | ±1.5 % @ 1550 /2 hrs | 1804 | 1700 | Steel ladle spout |
| GIT HEAT "A" | 88 | 1.0 | 5 | 2.75 | 650 | ±1.0 % @ 1550 /2 hrs | 1820 | 1750 | BOF & steel ladle bottom |