Can Refractory Castables be Used with Refractory Cement

Can refractory castables be used with refractory cement? Refractory cement is a kind of binder in the application of refractory materials.

Refractory cement is a kind of refractory material used as a binder and refractory powder when making refractory castables. It uses high-quality bauxite and lime as raw materials and mixes it into a raw material with appropriate ingredients in a certain proportion. After sintering, it is obtained as aluminate The clinker, which is the main component, is then ground into fine powder to produce a fire-resistant hydraulic cementitious material called refractory cement. Refractory cement is divided into aluminate cement, dolomite cement, calcium magnesium aluminate cement, etc. according to the different components.

Refractory castable is a kind of unshaped refractory. It is made by batching and mixing refractory aggregates, powders, binders and admixtures. Refractory castables are made of different aggregates and binders. The fire resistance is also different.

The refractory cement (https://highaluminarefractory.com/high-alumina-refractory-cement/) usually used in refractory castables is generally aluminate cement. Aluminate cement refractory castables set and harden faster, release heat more concentratedly, and have better heat resistance, but aluminate cement refractory castables The bad point is that the long-term strength of the castable will be reduced. Therefore, the refractory castable can be added to the proportion of refractory cement according to the requirements of the formula and application site to ensure that the refractory castable has good high temperature performance; low-cement refractory castable is also The low cement content greatly improves the high-temperature performance and slag resistance of low-cement refractory castables. The low-cement refractory castables after molding have less components that react with high temperatures in high-temperature environments, which can ensure the high-temperature performance of the castables .

There are also many refractory cement brands and models. When refractory castables are reproduced and processed, reasonable refractory cement is selected as a binder according to the refractory aggregate, which can effectively improve the high temperature resistance of the refractory castable.