The fire clay refractory brick is one of the most important refractory bricks in the industry. Commonly the Al2O3 content of fireclay brick is about 30% to 45%. Besides, Kerui has more than 20 years of experience about the research and production of refractory clay bricks.

Parameter of Fire Clay Refractory Bricks
Refractory clay bricks are weakly acidic refractory products that can resist the erosion of acidic slag and acidic gas. This also means that they are slightly less resistant to alkaline substances. In addition, clay firebricks have good thermal properties and can withstand rapid cooling and heating.
The main component of fire clay brick is calcined bauxite. Kerui is able to use high purity Al2O3 to produce fireclay brick because the factory is surrounded by rich resources. As a result, the refractory fire clay brick has high quality. Below are main types for your choice. You can also find more information on Kerui YouTube.
Item/Grade | SK-30 | SK-32 | SK-34 | SK-35 | |
---|---|---|---|---|---|
Al2O3, % | ≥ | 30 | 35 | 38 | 45 |
Fe2O3, % | ≤ | 2.5 | 2.5 | 2 | 2 |
Refractoriness (SK) | ≥ | 30 | 32 | 34 | 35 |
Refractoriness underload, 0.2MPa, °C | ≥ | 1250 | 1300 | 1360 | 1420 |
Apparent Porosity, % | ≤ | 22-26 | 20-24 | 20-22 | 18-20 |
Bulk Density, g/cm³ | ≥ | 1.9-2.0 | 1.95-2.1 | 2.1-2.2 | 2.15-2.22 |
Cold Crushing Strength, MPa | ≥ | 40 | 45 | 30 | 40 |
Customize Fire Clay Refractory Bricks for Sale
Standard Size
The standard size of fireclay bricks is 230 x 114 x 65mm (firebrick 9 x 4.5 x 2.5 inch).
Standard refractory bricks have a uniform size and high construction efficiency. And usually refractory brick manufacturers have sufficient inventory, which can save a lot of production time.



Common Shape
Common shapes of special refractory bricks include: wedge bricks, knife bricks, axe bricks, curved bricks, checker bricks, etc.
These clay bricks can perfectly fit the corners, edges and other special parts of the kiln to enhance sealing and reduce heat loss. And it helps to disperse the stress of the kiln and ensure the stability of the kiln masonry.



Customized Shapes
According to the specific situation of the kiln, Kerui can produce special shaped bricks according to the drawings. For example, flow steel bricks that guide the flow of molten steel, seat bricks that play a supporting role, and so on.
Kerui has been focusing on making customized refractory bricks for more than 20 years and has introduced high-precision automatic forming equipment. And our delivery time period, you can trust Kerui Refractory.
Applications of Fire Clay Refractory Bricks
When considering the masonry of refractory linings, fire clay refractory brick is the first choice! This brick is often used in relatively low temperature areas of the following industrial kilns and furnaces:
- Coke oven;
- Metallurgical furnace;
- Blast furnace;
- Hot blast furnace;
- Incinerator;
- Glass kiln;
Shipping Details of Fire Clay Brick Factory
Package of Fire Clay Refractory Brick
Package: in pallet or box;
Marks: product name, type, package date and other customized items.
Delivery of Fire Clay Refractory Brick
For standard brick: immediate delivery for stock;
For customized brick: 15-30 working days.
Welcome to Visit Fire Clay Brick Factory
Kerui refractory fire clay brick factory is located in the largest refractory production zone in China – Xinmi City, Henan Province. Every year there are intended customers came to our factory for business visit.
There are 4 main workshops: raw material workshop, molding workshop, sintering workshop, warehouse workshop. There are strict production standard and quality control measures in each workshop. More importantly, Kerui is the source manufacturer and you don’t need to pay for other additional cost. Get factory refractory brick price from Kerui now!