Kiln Fire Bricks

Kiln Fire Brick

supply kiln fire bricks

A kiln fire brick, also known as a refractory brick, is a type of brick made from ceramic materials that can withstand high temperatures without breaking down or melting. Kiln fire bricks are commonly used in kilns, furnaces, and other high-temperature applications to create a durable and heat-resistant surface.
PER refractory bricks and materials manufacturers sell a wide range of kiln fire bricks for sale including high alumina bricks, clay bricks, silica bricks, corundum bricks, magnesia-chromium bricks, mullite bricks, etc. Used in cement rotary kiln construction to resist various chemical and mechanical attacks.

Types of Kiln Fire Brick

Kiln fire bricks come in various shapes, sizes, and types, each designed to meet specific temperature and structural requirements. These bricks are made from a combination of clay firebricks, alumina firebricks, and silica firebricks, which gives them their unique ability to withstand high temperatures.
There are three main types of kiln fire brick: soft, hard, and insulating.

Soft Fire Bricks

Soft fire bricks are the most commonly used kiln fire bricks due to their lightweight and insulating properties.
These bricks are made from a mixture of clay and other organic materials and are often used to line the interior of kilns and furnaces.
Soft bricks are not as durable as hard bricks but are much easier to work with.

Hard Fire Bricks

Hard fire bricks, also known as dense bricks, are made from a combination of clay and other inorganic materials.
These bricks are much denser and more durable than soft bricks, making them ideal for use in high-temperature applications.
Hard bricks are often used in kiln walls, furnace floors, and other structural applications.

Insulating Bricks

Insulating bricks are made from lightweight materials such as vermiculite or perlite and are used to create a layer of insulation within the kiln or furnace.
These firebricks are not as durable as hard bricks but are excellent at retaining heat and can reduce energy costs.

Uses of Kiln Fire Brick

Kiln fire bricks have various uses in different industries. Here are some of the most common uses of kiln fire bricks:

Kiln Building

Kiln fire bricks are commonly used in the construction of kilns for pottery making. These bricks are used to line the interior of the kiln, creating a heat-resistant surface that can withstand the high temperatures required for firing pottery.

Furnace Lining

Kiln fire bricks are also used to line the interior of furnaces in industries such as steel and glass production. These bricks create a durable and heat-resistant surface that can withstand the extreme temperatures required for these processes.

Pizza Ovens

Kiln fire bricks are also used in the construction of pizza ovens. These ovens require a high level of heat retention to bake the perfect pizza, and kiln refractory bricks provide the necessary insulation to achieve this.

Outdoor Fireplaces

Kiln fire bricks are a popular choice for outdoor fireplaces and fire pits. These bricks are durable and can withstand the high temperatures generated by the fire, making them a safe and reliable option.

Ceramics Production

Ceramics production is one of the most common applications for firebrick kilns. In this process, clay or other materials are fired at high temperatures to create durable, heat-resistant objects like pottery and tiles.

Glass Production

Glass production also relies on firebrick kilns to melt and shape glass. Glass is typically heated to temperatures of around 1,400 degrees Celsius, which requires a specialized kiln that can withstand the extreme heat.


Firebrick kilns can also be used in metallurgy to extract metals from ore. In this process, the ore is heated to high temperatures to melt the metal, which is then separated from the waste materials.

Understanding Firebrick Kilns

refractory brick for Cement Rotary Kilns
Refractory Brick for Cement Rotary Kilns
Silicon Bricks for Glass Kilns
Firebricks for Glass Kilns

Firebrick kilns are kilns that are made using firebricks, which are specially designed bricks that can withstand high temperatures.
These kilns are typically used for firing ceramics, glass, and other materials that require high temperatures for curing or hardening.
Firebrick kilns are able to maintain a consistent temperature for long periods of time, making them ideal for processes that require slow and gradual heating or cooling.

Understanding Firebrick Kilns

When selecting kiln fire bricks, there are several factors you should consider to ensure you choose the right type for your application:

Temperature Resistance

Different types of kiln fire bricks are designed to withstand different levels of heat. Make sure you choose a brick that can withstand the maximum temperature of your application.

Density and Porosity

The density and porosity of kiln fire bricks affect their thermal conductivity and insulation properties. Choose a brick with the appropriate density and porosity for your specific application.

Chemical Composition

Different kiln fire bricks have different chemical compositions, which can affect their durability and resistance to certain chemicals. Consider the chemical environment of your application and choose a brick that is compatible with it.

Maintenance of Kiln Fire Brick

Proper maintenance of kiln fire bricks is essential to ensure their longevity and performance. Here are some maintenance tips to keep your kiln fire bricks in good condition:


Regularly clean your kiln fire bricks to remove any debris or buildup that can reduce their heat resistance. Use a soft brush or cloth to avoid scratching the surface.


If you notice any cracks or damage to your kiln fire bricks, repair them as soon as possible to prevent further damage. Use a refractory mortar or cement to fill in the cracks.


If your kiln fire bricks are severely damaged or worn out, replace them with new ones to maintain the efficiency of your application.

Kiln fire bricks are an essential component in various high-temperature applications, from pottery making to steel production.
By understanding the different types of kiln fire bricks, their uses, benefits, and maintenance, you can choose the right refractory brick for your specific application and ensure its longevity and performance.

About PER Refractories Company

PER Refractories Company is located in Xinmi City, Henan Province, the hometown of refractory materials in China. Our company is a technology-based refractory enterprise integrating R&D, production, sales, and technical service. The rich resources and excellent quality in the territory provide unparalleled superior conditions for the production of refractory materials. Our main products are refractory clay bricks, high alumina bricks, refractory silica bricks, magnesium refractory bricks, mullite bricks, insulation bricks, and other high-temperature resistant products.

Company PER refractory is the production base of green, energy-saving, and environment-friendly new refractory materials. Our company has passed ISO9001:2008 international quality system certification and GB/T24001-2004 / ISO14001:2004 environmental management system certification, enterprise-quality inspection agency certification. Our products are sold well in more than 20 countries all over the world. They are the preferred refractory products for metallurgy, non-ferrous, petrochemical, glass, ceramics, and other refractory industries.

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