Description
Refractory castable Description
Refractory castables are a type of refractory material used in high temperature environments. They are made by mixing refractory aggregates, powders, binders and additives, casting and curing to form a solid lining. They have excellent high temperature performance and can withstand extreme high temperature conditions. The refractoriness is usually between 1580℃ and 1850℃. The construction flexibility of refractory castables makes them popular in the industry and suitable for furnaces, pipes and reactor linings of various complex shapes. They not only provide thermal insulation and refractory properties, but also resist slag, chemical erosion and mechanical wear, extending the service life of equipment.
During the application process, refractory castables can be customized according to different industrial needs. Par exemple, in environments where slag resistance is required at high temperatures, high-aluminum castables or magnesium castables are widely used; while in occasions where wear resistance is required, such as circulating fluidized bed boilers, silicon carbide castables become the first choice. The construction process of refractory castables is relatively simple. They are formed by pouring, vibrating or pressing, and can be used after a certain curing time, which not only improves construction efficiency but also reduces equipment downtime. Their use not only improves the durability and safety of industrial equipment, but also provides higher efficiency and economic benefits for industrial production.
Other amorphous products
- Ciment réfractaire
- Réfractages à coups
- En plastique réfractaire
- Mortier réfractaire
- Refractory aggregate
- Bauxite réfractaire
Castable refractory formula
- Aggregate: comme la bauxite à haute teneur en alumine, silica, magnesia, etc..
- Powder: such as alumina powder, silica powder, etc..
- Binder: such as cement (high-alumina cement, silicate cement), phosphate, sodium silicate, etc..
- Additives: including water reducer, early strength agent, expansion agent, etc., used to improve the performance of the material.
Technical Parameter
| type | Refractoriness（℃） | Bulk density（g/cm³） | Compressive strength（MPa） | Line change rate（%） | Operating temperature（℃） | Résistance aux scories | Stabilité aux chocs thermiques |
|---|---|---|---|---|---|---|---|
| High alumina castable | 1770 – 1850 | 2.6 – 2.9 | 30 – 80 | ±0.1 – ±1.5 | 1350 – 1600 | mieux | en général |
| Clay castable | 1580 – 1700 | 2.3 – 2.5 | 10 – 30 | ±0.1 – ±1.0 | 1100 – 1400 | en général | Poor |
| Silicon castable | 1690 – 1730 | 1.8 – 2.2 | 10 – 30 | ±0.5 – ±1.5 | 1400 – 1600 | Poor | Poor |
| Magnesium castable | 1750 – 1850 | 2.8 – 3.2 | 30 – 100 | ±0.1 – ±1.5 | 1600 – 1800 | excellent | en général |
| Moulable en carbure de silicium | 1700 – 1800 | 2.2 – 2.6 | 30 – 60 | ±0.1 – ±0.5 | 1400 – 1600 | excellent | excellent |
| Low cement castable | 1700 – 1850 | 2.5 – 2.8 | 40 – 90 | ±0.1 – ±1.0 | 1400 – 1700 | excellent | excellent |
| Coulable sans ciment | 1750 – 1900 | 2.5 – 3.0 | 50 – 120 | ±0.1 – ±0.5 | 1500 – 1800 | excellent | excellent |
Refractory castables HS Codes
- HS 6902.20.10 – Refractory castables mainly composed of alumina or alumina and silica.
- HS 6902.20.90 – Other refractory materials mainly composed of alumina or alumina and silica.
- HS 6902.90.10 – Refractory castables containing magnesia.
- HS 6902.90.90 – Other refractory materials not specified.
Refractory castable bulk price
Refractory castable uses
Furnace lining protection:
- Refractory castables are widely used in the lining of various high-temperature furnaces, comme les hauts fourneaux, fours de chauffage, converters, fours électriques, etc.. They provide structural stability at high temperatures and protect the furnace body from high temperature and slag erosion.
Wear-resistant lining:
- In circulating fluidized bed boilers (CFB) or other equipment requiring wear resistance, refractory castables are used as lining materials to resist the wear of solid particles and extend the service life of the equipment.
High Temperature Reactors and Vessels:
- Used for lining of high temperature containers such as chemical reactors, casting crucibles, melting furnaces, etc., providing thermal insulation, corrosion resistance and structural strength, ensuring the stability and safety of materials at high temperatures.
Flue and duct linings:
- Refractory castables can be used for lining flues and high-temperature pipes, providing thermal insulation, wear resistance and chemical corrosion resistance, reducing heat loss and improving pipe durability.
Repair and maintenance:
- Due to the ease of construction of refractory castables, it is often used to repair and maintain equipment with existing refractory damage. By pouring or spraying, damaged furnace linings, flues or other high-temperature parts can be quickly repaired to reduce equipment downtime.
Casting material delivery packaging
Casting material delivery packaging
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