Cost-Effective Refractory Solutions for Industrial Furnaces

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Castable refractory is an important type of monolithic refractory made of refractory aggregate, binder, and additives. Water or another liquid binder is added when it is used. The difference between castables and mortar, or other unshaped refractory products, is that certain settings and hardening times are needed when applying the castables. Castables are mainly used for the lining of high-temperature industrial furnaces because they can endure high temperatures, high pressure, chemical corrosion, etc., in harsh environments due to their properties such as high shock resistance, good resistance to wear, corrosion, and chemical impact.

high alumina castable supplied

high alumina castable

Based on the traditional matching proportion, high alumina castable adjusts particle grade and adds additives, and the amount of cement which levels up the performance of moderate crushing strength, load hardening temperature, thermal stability, and thermal conductivity is lowered.

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corundum castable supplied

Corundum castable

Corundum castable is made of fused cast corundum as the secondary material added with many types of super fine powder and effective compound addition. It has features such as high strength, volume stability, and good corrosion resistance and will not easily be affected by reducing gas.

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zirconium castable product

Zirconium castable

Zicounium castable is made of zirconium mullite brick aggregate and fine powders, and liquid silica gel binder. It has the characteristics of high-pressure resistance, good thermal shock resistance, good fluidity, and plasticity.

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lightweight insulation castable supplied

Lightweight insulating castable

Lightweight insulating castables are hydraulic castables, and most of them are thermal insulation products. They have the characteristics of low thermal conductivity, good thermal insulation performance, small linear shrinkage, high drying strength, and relatively good integrity.

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quartz castable refractory for glass furnace

Quartz castable

Quartz castable is also known as silica castable. It is a cement-free, high-purity molten silica castable. It can be poured into the overall structure of various glass furnaces and can also be used as thermal repair material for silica structures.

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Application of castables

Castable refractories are widely used in high-temperature equipment in metallurgy, glass, chemical industry, electric power, and other industries, such as blast furnaces, kilns, furnaces, heat treatment furnaces, etc. It can withstand extremely high temperatures and has good thermal shock and chemical resistance, protecting equipment from high temperatures, chemical corrosion, and mechanical wear.

Each castable has its own features. When choosing the castable, one must consider the specific working conditions and requirements to make sure the castable is suitable, safe, and enduring under high temperatures.

Characteristics of castables

The main feature of refractory castables is their strong plasticity. They can be constructed by pouring, spraying, or smearing to adapt to equipment surfaces of different shapes and sizes. It can harden and cure after application to form a strong, fire-resistant layer that provides protection and insulation.

Easy to anchor and can effectively prevent the wall from protruding.

The construction is convenient, the labor intensity is low, the masonry efficiency is high, and the mechanization of furnace construction can be realized.

The delivery time is short, which can reduce inventory and costs accordingly.

The casting methods of cast refractory

Cast refractories derived from different materials have different applications, and the construction methods are varied accordingly. Below are some examples of the casting methods of castables.

1. Add water and pour directly into the overall lining, such as high-aluminum castables and low-cement castables. Mold support is required.

2. Depending on the complexity of the pouring parts, self-flow molding can be used for parts that cannot be constructed by pouring. Commonly used low-cement self-flow castables do not require mold support.

3. Using the smearing method for construction, no kiln mold is needed, and a thin lining is applied, which saves time and effort. Such as refractory coating.

4. Use the ramming method for construction, fill the material into the furnace shell, and use ramming tools to vibrate vigorously to obtain a strong density, which can be directly put into production to form a ceramic structure at high temperatures.

5. If the gunning method is used for construction, it is necessary to use spraying equipment to directly spray the mixed materials onto the construction site.

6. Inject materials directly into the parts to be constructed, also known as refractory injection materials, such as foam mud for blast furnace tapholes.

7. Prefabricated parts are poured directly at the manufacturer and constructed at the construction site. They are called castable prefabricated parts or refractory prefabricated parts.

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No. 1109, Building A, World Trade Center, Southern of Zhonghua Road, Wenfeng District, Anyang City, Henan Province, China


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AGRM strives to serve the top grade refractories, furnaces and kilns, related equipment, and the most cost-effective turnkey solutions for masonry, heat protection, heating up, etc. Contact us immediately!
Phone Number: 0086 16668392162
Address: No. 1109, Building A, World Trade Center, Southern of Zhonghua Road, Wenfeng District, Anyang City, Henan Province, China

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