What is the formula of refractory castable

The formula composition of refractory castables:

The formula composition of refractory castables is refractory aggregate, refractory powder, binder and additives. The specific refractory castables should be selected according to the needs of the use of appropriate refractory raw materials to produce, the proportion of refractory aggregate and refractory powder added, select What kind of refractory raw materials need to be considered, the same refractory castable formula, using different refractory raw materials to make castables, the performance of processed refractory castables are different, so the formula of refractory castables is very important.

What is refractory castables?

Refractory castable is an unshaped refractory. It is a refractory product that many refractory manufacturers have. The production of refractory castable requires the formula of refractory castable. What is the formula of refractory castable? The refractory castable is made of refractory aggregate and refractory powder as the main refractory raw materials. It is made by adding a binder and an admixture and uniformly mixing. It can be put into use after mixing according to the use of the added binder during construction.

There are many types of refractory castables, including clay castables, high alumina castables, mullite castables, corundum castables, wear-resistant castables, thermal shock castables, cement kiln castables, and boiler refractory castables. Refractory castables are named by selecting materials, by performance and by application. Refractory castables have different names and refractory castables have different formulations.

Clay castables can produce a variety of castables, can be used in a variety of industrial kilns, can be customized production and processing according to customer needs, different performance, different uses of clay castables require different clay castable formulations, clay castables The formula can also be adjusted according to the needs of customers to ensure that the produced clay castables meet the needs of customers, meet the use of industrial kiln liners, and meet the requirements of high temperature performance of kiln.

The refractory castable formula selected by the performance-named refractory castable is mainly based on a certain characteristic, such as abrasion-resistant refractory castable. The formula of refractory castable requires the use of refractory materials with high temperature and wear resistance to ensure refractory casting. Under the condition of high temperature operation of the kiln, the material has good abrasion resistance and can resist the erosion of air flow and slag.

refractory castable
Refractory Castable

Things To Remember When Using Castable

1.Castables must always be stored in a cool and dry area.
2.One must ensure that the mixers and tools are free from old castable or any other material that can contaminate the product. Such contamination could affect the strength of the castable mix.
3. Only drinking suitable water should be used to mix castable. The temperature of the mix should be optimal as well.
4.Be careful while mixing castable, like castable refractory cement. Too much mixing generates heat and speeds up the setting time.
5.The forms should be covered with oil or grease to prevent moisture loss.
6.After placing the mix, the castable needs to be cured for 18 to 24 hours straight. Cover it with polyethylene sheets and spray it with cold water periodically. It will maintain the moisture of the mix and promote uniform curing at the applied area.


What is a castable refractory composed of?

A castable refractory composition may include from 5% to 95% by weight of alumina, aluminosilicate, or mixtures thereof: up to 70% by weight silicon carbide: up to 10% by weight carbon: from 0.1% to 5% by weight alkaline earth metal oxide and/or hydroxide;

What are the different types of castable?

There are various types of refractory castables: Conventional castable. Low cement refractory castable. Ultra low cement refractory castable.

How do you use refractory castable?

Apply release agent, such as cooking spray, to the form or mold. Pour mixture into the mold and smooth by patting thoroughly to remove air pockets, but do not smooth to a slick finish as this prevents water from escaping. Setting and Firing: Let set at 60°F or above for 24 hours.

Why is castable refractory used?

Castable refractory cements are used to build and repair kilns, furnaces, and other heat resistant structures. Refractory castables, as they are sometimes called, can be derived from a wide variety of raw materials and cast into any required shape and size.

Changxing Refractory Castable
Changxing refractory castable

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