Description
Fireclay brick is a type of refractory material made primarily from refractory clay, which is fired at high temperatures. The main component is aluminosilicate. These bricks have excellent fire resistance, thermal stability, and slag resistance. They are generally categorized into: fireclay bricks, dense clay bricks, low-creep clay bricks, and thermal shock-resistant clay bricks.

Advanced Technical Strength
With over 20 years of experience in the refractory industry, JHYRef holds more than 30 national patents and is recognized as a “Specialized and Innovative Enterprise ” in Henan Province, China. Our product range includes refractory bricks and various monolithic refractory materials, widely used in building materials, non-ferrous metallurgy, steelmaking, and glass industries.
Intelligent Production Workshop
JHYRef has a complete industrial chain with an annual production capacity of 45,000 tons of refractory bricks and 25,000 tons of monolithic materials. Advanced automation and refined management ensure high-temperature resistance, corrosion resistance, thermal shock resistance, and extended service life.

Specifications
Item | Grade | ||||
PN-42 | PN-40 | PN-35 | PN-30 | PN-25 | |
ω(Al2O3) / % ≥ | 42 | 40 | 35 | 30 | 25 |
ω(Fe2O3) / % ≤ | 2.0 | — | — | — | — |
Open Porosity / % ≤ | 20(22) | 24(26) | 26(28) | 23(25) | 21(23) |
CCS / MPa ≥ | 45(35) | 35(30) | 30(25) | 30(25) | 30(25) |
35(25) | 25(20) | 20(15) | 20(15) | 20(15) | |
R.U.L. (0.2 MPa T0.6)/ ℃ ≥ | 1400 | 1350 | 1320 | 1300 | 1250 |
HPLC / % | 1400℃×2 h —0.4~0.1 | 1350℃×2 h —0.4~0.1 | 1300℃×2 h —0.4~0.1 | 1300 ℃×2 h —0.4~0.1 | 1250℃×2 h —0.4~0.1 |
Applications
Fireclay bricks are suitable for coke ovens, hot blast stoves, and general industrial furnaces.
Dense clay bricks are suitable for blast furnaces, lime kilns, cement kilns, glass kilns, steel ladles, molten iron tanks and general industrial furnaces.
Low-creep clay bricks are suitable for anode roasting furnaces, hot blast stoves, and other similar applications.
Thermal shock-resistant clay bricks are suitable for hot blast stoves and dry quenching coke furnaces, among others.