High alumina castable is a mixture of refractory aggregate, powder and binder. After adding water or other liquid, it is suitable for construction by pouring and vibration. High alumina castable supply, mainly for the construction of industrial furnace lining.
In order to improve the physical and chemical properties and construction properties of refractory castables, high aluminum refractory castables often also add an appropriate amount of additives, such as plasticizer, dispersant, coagulant, retarder, expansion agent, degumming – gel agent.
This series of refractory castables are used for refractory castables that are subjected to large mechanical force or strong thermal impact. If an appropriate amount of stainless steel fiber is added, the toughness of the material will be significantly increased. Because the basic material composition supplied by high alumina castable supply (such as aggregate and powder, admixture, binder and admixture), setting and hardening process, construction method, etc., and the concrete in civil engineering is similar, it is called fire resistant concrete.
High alumina castable production process is simple, energy-saving, high construction efficiency, good quality. Can also be prepared according to the needs of the site or choose excellent performance of the material. Therefore, refractory castable is a kind of amorphous refractory with large amount and wide application scope in furnace construction.
In general, the high alumina castable supply is based on the traditional ratio, the adjustment of particle grading, adding different additives, reduce the amount of cement, improve the performance, increase the strength of medium temperature and softening temperature under load, reduce the thermal conductivity, thermal stability is good. It has the characteristics of high aluminum castable, such as permeability resistance, erosion resistance, impact resistance and wear resistance, good mechanical performance, strong integrity of furnace structure, better air tightness than brick furnace, longer furnace life, save the cost of repairing furnace, and remarkable economic benefit.
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