Are you curious about the latest trends in refractory castables? You might be surprised to know that there are several different types of castables that are currently best-sellers in the market. From steel to cement and petrochemical industries, these castables are used extensively for their incredible heat resistance and thermal insulation properties.
But which ones are the hottest picks right now? In this blog, we will explore the top-main types of refractory castables that are making waves in the industry. So, without further ado read out to know more about types of refractory castables.
What is Refractory Castable?
Refractory castable is one of the best-selling refractory materials that can resist acid erosion. Thus, refractory castable also known as acid-resistant castable; is widely used in the non-ferrous metallurgy chemical industry as well as other applications. In addition, refractory castables come with a massive quantity of binding agent & moisture compared to other unshaped refractories.
Moreover, the resistant castables consist of 60% to 70% acid-resistant aggregate, 13% to 16% sodium silicate solution and 30% to 40% other wide range of raw materials with a density of 1.381.42g/cm3. So, when the agents are introduced, the quality of refractory material turns the mass of the sodium silicate solution and withstand acidic medium corrosion at 800 to 1200 degree celsius, resulting in high-strength refractory castable. However, there are different types of refractory castables available in the market.
Types of Refractory Castables:
The following is the list of types of refractory castable that play vital roles in a wide array of industries; have a look.
High-Alumina Refractory Castables:
High-alumina refractory castables are also known as convention-dense castables. It is widely used in a lining turning kiln, heat-treatment furnaces, and furnaces of various industries like construction, cement, power-plant, etc. Additionally, such types of castables have a high content of alumina that may range from around 60% to 90%. Hence, high alumina refractory castables are suitable for applications that demand excessive strength, thermal resistance and other high-temperature properties.
Low-cement Refractory Castables:
Another best-selling refractory castable; is a low cement refractory castable made up of a lower content of cement than the regular dense castable. In addition, low-cement refractory castables offer outstanding physical properties like low porosity, good abrasion, and so on. Hence. Low-cement refractory castable is mainly used in refractory lining like blast furnaces, refractory boilers, cement kilns, water-cooling pipe binders, and so on.
Non-cement Refractory Castables:
Cementless castables are also known as no cement castables, however, these castables are dried with a special binder before they are used at high temperatures. Since they do not contain CaO, non-cement refractory castables are suitable for refractory materials used in the alumina industry.
Insulating Castables:
Insulating castables are available in various shapes and sizes. Although, such types of castables pose low thermal conductivity to retain heat and minimize the use of fossil fuel. Thus, insulating castables are mostly used in cold-face applications at temperatures ranging from 900 to 1500 degrees Celsius.
Ultralow Cement Refractory Castables:
Ultra low-cement refractory castable is a type of castable containing calcium oxide greater than 0.2% and a max of 1% on a calcined basis. Ultra-low cement castables are extremely suitable for refractory lining applications utilized in a wide array of industries.
Light-weight Insulating Refractory Castables:
Light-weight insulation refractory castables are similar to standard insulating castables, such types of castables are available in different shapes and sizes which are also counted as unshaped refractory materials. It is made up of refractory powder, cement binder, and other refractory aggregates-additives.
Characteristics of Good Refractory Castables:
As we know refractory materials are the backbone of all industries, the following are the characteristics of good refractory castables:
– Great thermal shock resistance.
– Abrasion-resistant
– Better acid resistance properties
– Easy to install
– Higher density and lower porosity
– High refractoriness
– Long service life
In the Nut Shell:
Refractory castables are one of the best-selling refractory materials that can withstand high temperatures. It is widely used for high-temperature applications in many industries, such as refractory boilers, kilns, furnaces, and so forth. If you are in need of standard quality refractory materials- Ganeshas got your back. Ganeshas is a leading refractory manufacturer in India, having years of experience in offering value-for-money refractory products and services; Contact us for further details.
