The Difference between Refractory Castables and Refractory Cement

For customers who do not understand refractory castables and refractory cement, these two products are easily confused. This article will give you an in-depth understanding of the differences between these two products so that you can better understand them.

1. Refractory castables

Refractory castable is a kind of unshaped refractory material. It is made of refractory aggregates, powders, binders, and admixtures through batching and mixing. Depending on the selected aggregates and binders, the castables produced and the functions are also different. There are many types of refractory castables, and the corresponding castables can be selected for lining according to the industrial furnace environment.

Refractory castables are usually used as overall kiln lining products. During on-site construction, the castables and binders need to be pre-mixed, then add appropriate water, stir evenly, and then pour into the installed lining mold. The vibrator is vibrated into shape and can be put into use after curing, demoulding, and baking.

2. Refractory cement

Refractory cement is a refractory material used as a binder and refractory powder when making refractory castables. It uses high-quality bauxite and lime as raw materials and is mixed into an appropriate amount of raw material in a certain proportion. After sintering, the resulting product is aluminate Clinker, which is the main component and is then ground into fine powder to make 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 different compositions.

Refractory cement is also called high-temperature cement. Cement is added with special materials used in the preparation of high-temperature resistant (refractory) concrete.
The main ones include 1. Low-calcium aluminate refractory cement with pure bauxite and limestone as the main raw materials, including Secar cement from France. 2. Dolomite high-temperature cement is made by using dolomite as the main raw material and adding apatite, iron ore, etc. 3. Use materials that can produce chemical reactions and harden at high temperatures, such as high-temperature-resistant cement with refractory sulfates, borate and phosphates as cementing materials.

Refractory castables and refractory cement are different materials with different uses and applications. Understanding their properties and composition is critical to selecting the right product for specific refractory needs. By distinguishing between refractory castables and refractory cement, customers can make informed decisions when it comes to their fire resistance requirements. Remember to consult reliable sources for further information and guidance.