Introduction to Refractory Castable

Refractory castable is a mixture of refractory aggregates, powders, and binders. After adding water or other liquids, it is suitable for construction using pouring and vibration methods. It can also be pre made into prefabricated components with specified shape and size, used to construct industrial furnace linings. In order to improve the physical and chemical properties and workability of refractory castables, an appropriate amount of additives are often added, such as plasticizer, dispersant, accelerator, retarder, expansion agent, gel breaking gel agent, etc. In addition, for the refractory castables used in the parts with large mechanical force or strong thermal shock, if appropriate amount of stainless steel fiber is added, the toughness of the materials will be significantly increased. If inorganic fibers are added to the insulation and refractory castable, it can not only enhance toughness but also help improve its insulation performance. Due to its basic material composition (such as aggregates and powders, admixtures, binders, and admixtures), setting and hardening process, construction methods, etc., similar to concrete in civil engineering, it was also referred to as refractory concrete.
The production process of refractory casting materials is simple, labor-saving and energy-saving, with high construction efficiency and good quality. Materials with excellent performance can be prepared or selected on site according to needs. Therefore, refractory castable is an amorphous refractory material with a large amount and a wide range of applications in furnace construction engineering.