clay brick

Clay bricks are manufactured from refractory clay (kaolinite-type minerals) through processes including batching, forming, drying, and high-temperature firing. Their primary mineral composition consists of mullite and silicate glass phases, exhibiting the following performance characteristics:

Excellent thermal stability and thermal shock resistance: Low thermal expansion coefficient enables adaptation to frequent furnace startups/shutdowns and temperature fluctuations.

Superior thermal insulation: Relatively low thermal conductivity minimizes furnace heat loss, delivering significant energy savings.

Moderate refractoriness and slag resistance: Offers adequate resistance to acidic slag, meeting standard operating requirements for diverse industrial furnaces.

Excellent workability: Easily cut and processed into various custom shapes and dimensions as required.

Exceptional cost-effectiveness: Abundant raw materials and mature production processes make it one of the most cost-efficient refractory materials.

Key Technical Specifications:

Al₂O₃ Content: 30% - 48%

Refractoriness: ≥ 1580°C - 1750°C (increases with Al₂O₃ content)

0.2MPa load softening onset temperature: ≥ 1250℃ - 1450℃

Room-temperature compressive strength: ≥ 20 MPa - 40 MPa

Linear change rate after re-firing (1400℃, 2h): Typically controlled within ±0.5%

Clay bricks are widely used in the following fields due to their versatility and cost-effectiveness:

1. Metallurgical Industry: Non-critical load-bearing or insulation sections of blast furnaces, hot blast stoves, heating furnaces, soaking furnaces, and coke ovens.

2. Building Materials Industry: Preheaters, decomposers, and tertiary air ducts in cement rotary kilns; lower sections of regenerators and flue ducts in glass melting furnaces.

3. Ceramics and Refractories Industry: Insulation layers for kiln bodies and lining bricks for kiln cars in tunnel kilns, shuttle kilns, and reverse-flame kilns.

4. Power and Chemical Industries: Thermal insulation linings for steam boilers, gas generators, and chemical conversion furnaces.

5. Civil and General Industrial Applications: Masonry construction of various chimneys, flues, and combustion chambers, as well as general thermal insulation for heating equipment.

Zhengzhou Chaoyu Refractory Materials Co., Ltd. provides customers with a full range of clay brick products and professional services:

Standard and Custom Products: Stable supply of standard clay bricks in various grades, with custom production available for specialty and oversized clay bricks.
Rigorous Quality Control: Products strictly comply with national and industry standards such as GB/T 34188-2017, ensuring consistent and reliable performance.
Professional Technical Support: We provide tailored material selection recommendations, kiln construction design solutions, and construction technical guidance.
Stable Supply Assurance: Leveraging our own mines and large-scale production lines, we guarantee long-term stable supply at competitive prices.
Comprehensive Logistics and After-Sales Service: Equipped with an efficient warehousing and logistics system, we offer timely after-sales technical consultation.

For detailed technical specifications, samples, or specific quotations for clay bricks, please contact us anytime via our official website or sales hotline. Zhengzhou Chaoyu Refractory Materials Co., Ltd. will provide you with the most cost-effective clay brick solutions and professional service support.