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Fireclay chamotte lining high alumina resistant fireproof heat refractory fire clay brick
Laurel mullite insulating bricks are made of bauxite,mullite, kaolin and other raw materials, suitable for applications from 1260ºC to 1550ºC. Each grade of brick is formulated to meet specific thermal and physical requirements. After firing, the bricks are machined to close dimensional tolerances.
The insulating brick has the properties of low thermal conductivity, lightweight, high porosity, thermal insulation, and good thermal shock resistance. Mainly used in industrial equipment lining, insulation layer, kiln door backing, roof and other parts.
Low bulk density
Low thermal conductivity
Good thermal shock resistance
High temperature resistance
Excellent thermal insulation effect
Special size and OEM Service also provide!
| Item | Mullite Insulating bricks | ||||
| Grade | 23 | 26 | 28 | 30 | |
| Al2O3(%) | ≥40 | ≥42 | ≥55 | ≥67 | ≥70 |
| Fe2O3(%) | ≤1.2 | ≤1.0 | ≤1.0 | ≤0.7 | ≤0.6 |
| Bulk density ( g/cm3 ) | 0.6 | 0.8 | 0.8 | 0.9 | 1.0 |
| Classification Temperature(°C) | 1300 | 1300 | 1400 | 1500 | 1550 |
| Cold Crushing Strength (Mpa) | ≥1 | ≥2 | ≥2.3 | ≥2.6 | ≥3.0 |
| Permanent Linear Change (%) x 12hrs | ≤1.0 | ≤1.0 | ≤1.0 | ≤0.8 | ≤0.8 |
| Thermal conductivity (W/m.k) | 0.18 (350ºC) | 0.23 (350ºC) | 0.25 (350ºC) | 0.33 (350ºC) | 0.43 (350ºC) |
Applications of insulating bricks
1. Back-up insulation for various furnaces and kilns
2. Primary hot face linings
3. Flue insulation
4. Other high-temperature equipment
Refractory materials include alumina series bricks, magnesia series bricks, corundum series bricks, mullite bricks, andalusite bricks. Insulation materials include ceramic fiber products, calcium silicate products, insulating brick, and rock wool insulation for the metallurgy, glass, ceramics, petrochemical, machinery, steel, cement, lime, construction and other industries.
We provide a global one-stop purchasing platform for refractory and insulation materials to offer you professional advice, qualified products and good service, helping you to make energy-saving easier.
We passed the ISO 9001 certificate, and many products got approval from domestic and foreign customers; our materials have been exported to Europe, South America, North America, Africa, Oceania, and Southeast Asia ,it is over 50 countries, and built firm business relations with more than 200 foreign companies.
Hope we will have the opportunity to work with you together.
We warmly welcome you to visit us at any time.
Q1. Are you a Manufacturer?
A: Yes, our factory is in Zibo, Shandong province. We also have strong cooperating relationships with other manufacturers for other related products.
Q2. Can we visit your factory?
A: Sure, warmly welcome at any time. Seeing is believing.
Q3. Can you accept OEM or ODM?
A: Yes, customization is also welcome.
Q4. What's the MOQ of the trial order?
A: No limit. We can offer the best suggestions and solutions to meet your requirements.
Q5. What are your payment methods?
A: T/T, L/C, and other payment terms are also available for us.
Q6. How long is the delivery time?
A: Normally, it takes around 10-20 days. It also depends on the quantity of the order size.
Q7. How about your company's certification?
A: CE, ISO9001, and test report. We also could apply for other necessary certifications.
Q8. How can you control your quality?
A: For each production processing, we have a complete QC system to control the quality during production.
Q9. Do you provide free samples?
A: Yes, free samples are available.
