Heavy Castable Refractory is a type of refractory material that is ready or poured at the project site in the form of mortar. These materials are used in areas with very high temperatures and harsh working conditions, such as furnaces, boilers, and internal walls of steel and cement industries.
1- High temperature resistance: These masses usually withstand temperatures above 1200 to 1800 degrees Celsius.
2- High mechanical resistance: due to high density and strong mechanical strength, they are resistant to impact, wear and pressure.
3- Thermal shock resistance: suitable for environments with sudden temperature changes.
4- High density: heavy cast mass has a higher density than light mass and is used for applications that require high resistance and prevent heat penetration.
5- Chemical resistance: It is resistant to chemicals and corrosive slags, especially in steel and petrochemical industries.
- Steel industry: walls and floors of electric arc furnaces and molten crucibles
- Cement industries: rotary kilns and preheaters
- Petrochemical industries: boilers and reforming furnaces
- Aluminum and copper industries: walls and floors of smelting furnaces
Heavy bulk aggregates usually include the following materials:
- High Alumina: to increase resistance to temperature
- Refractory cement (Calcium Aluminate Cement): as an adhesive
- Aggregates resistant to wear and temperature: such as silica and silicon carbide
- After applying and shaping, these types of masses need initial drying (Dry-out) to reach the final strength and perform optimally against high temperature.
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