Zhengzhou Zhongkeda Refractory Materials Co., Ltd
Refractory Clay Insulation Brick
Fireclay Insulating Brick | Lightweight Thermal Insulation | OEM Manufacturer for High-Temperature Applications
Clay insulating brick is a lightweight thermal insulation material primarily made from refractory clay, specifically designed for medium- to low-temperature industrial equipment (≤1200°C). It offers cost-effectiveness and ease of use as its core advantages.
Characters of Fireclay Insulating Brick：
•🌡️Temperature Resistance: Designed forlong-term use at 800-1200°C and capable of withstanding short-term exposure up to 1300°C, making it ideal for medium- to low-temperature applications.
•❄️Thermal Insulation: Features a thermal conductivity of 0.5–1.0 W/m·K, offering better insulation than standard bricks but lower than high-alumina or mullite bricks.
•💰Cost-Effectiveness: 30%-50% lower cost compared to high-alumina bricks, with readily available raw materials and a simple manufacturing process.
•🏗️Mechanical Strength: Compressive strength ranges from 1–5 MPa, making it suitable only for non-load-bearing insulation layers.
•🧪Chemical Resistance: Resistant to mild acidic environments but requires a protective coating in strong acid or alkaline conditions.
Typical Applications of Fireclay Insulating Brick:
✅ 🔥Metallurgical Industry: Used for annealing furnaces, heat treatment furnace back linings, and hot air duct insulation (≤1100°C).
✅ 🏺Ceramics & Building Materials: Ideal for brick kilns, ceramic kiln cars, and drying kiln insulation layers.
✅ 🛢️Petrochemical Industry: Applied in low-temperature cracking furnaces and storage tank insulation (requires anti-corrosion treatment).
✅ 🏡Residential Use: Suitable for home fireplaces, barbecue grills, and pizza oven linings.
Parameters of Fireclay Insulating Brick:
Item
NG-1.5
NG-1.3
NG-1.2
NG-1.0
NG-0.8
NG-0.6
NG-0.5
Bulk Density (g/cm³)≤
1.5
1.3
1.2
1.0
0.8
0.6
0.5
Cold Crushing Strength (MPa)≥
6
5
4.5
3.5
2.5
1.3
1.0
Permanent Linear Change on Heating/（%）
1400
1350
1350
1300
1250
1200
1150
Thermal conductivity W/(m•K)Mean temperature (350±25)℃ ≤
0.65
0.55
0.50
0.40
0.35
0.25
0.23
FAQ:
Q: What is the maximum temperature resistance of fireclay insulating bricks?
A: Our fireclay insulating bricks can withstand continuous use up to 1250°C (2282°F), making them ideal for industrial kilns, furnaces, and high-temperature equipment.
Q: Can I request customized sizes or shapes?
A: Yes! We offer OEM customization including size, shape (arch/curved/slot), density, and even branded packaging to meet your specific project needs.
Q: What is the minimum order quantity (MOQ)?
A: For regular sizes, our MOQ is usually 1000 pieces. For custom orders, please contact us directly for a tailored solution.
Q: Do your bricks contain asbestos or harmful materials?
A: No. All our bricks are asbestos-free, RoHS and REACH compliant, and safe for industrial and environmental applications.
Q: Can you provide test reports or quality certificates?
A: Absolutely. We provide SGS, ISO 9001, and third-party inspection reports upon request.
Q: What are your packaging and shipping options?
A: We offer export-standard packaging (pallet + stretch film or wooden crate) and support sea, rail, and air shipping. We can also handle FOB/CIF/DDP terms depending on your location.
Q: Do you offer free samples?
A: Yes. Free samples are available for quality testing. Please contact our sales team with your address and courier info.
