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Building 1, Zone 1, Greenland Binhu International City, Zhengzhou, Henan, China
Work Hours
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Weekend: 10AM - 6PM
Alumina Bubble Brick
Alumina bubble bricks are made of alumina bubble balls and alumina powder as the main raw materials, combined with other binders, and fired at a high temperature of 1750 degrees.
Alumina bubble fire brick is a kind of ultra-high temperature resistance and energy-saving insulation refractory material. Alumina bubble bricks not only have light density which can optimize the structure to reduce the weight of the furnace body, but also have low thermal conductivity, which has a good thermal insulation effect.
Alumina bubble brick can be directly built on the lining of the high-temperature furnace that is in contact with the flame, and can also be used to manufacture high-temperature furnace tubes, trays, protective covers, etc. The performance of alumina bubble refractory bricks is generally determined by the chemical composition. Except for the production process ,some factors such as particle ratio, molding pressure and firing temperature are also very important to the quality of the fire bricks.
Product Description
Description of Alumina Bubble Brick
Alumina bubble bricks are a high-performance, lightweight, heat-insulating refractory material that plays a crucial role in high-temperature industrial applications, balancing “ultimate thermal insulation” and “superior heat resistance.”
Its core raw material is alumina bubble—man-made lightweight spherical particles produced by melting industrial alumina at high temperatures and blowing it with high-pressure air. These hollow spheres are mixed with alumina powder and binder in a specific ratio and then fired at approximately 1750℃ to form refractory bricks with a large number of closed pores (from the hollow spheres) inside.
Characteristics of Alumina Bubble Brick
- High tempreture resistance more than 1750°C
- Save energy consumption and improve the thermal efficiency
- Good thermal stability at high temperature and long service life
- Optimize the furnace structure and reduce the weight of the furnace body
- Save the quantity of other insulation refractory material used in the furnace
Application of Alumina Bubble Brick
Alumina bubble fire bricks are mainly used as the lining of high-temperature industrial kilns below 1800°C, such as petroleum, chemical, electronics, ceramics, refractory materials and other industries.
Physical and Chemical Index
| Ultra Purity Alumina Bubble Brick | Alumina Bubble Brick | |||
| HAB-99 | SAB-99 | SAB-90 | SAB-85 | |
| Max Service temperature ℃ | 1800 | 1800 | 1800 | 1750 |
| Al2O3 % | ≥99.3 | ≥99 | ≥90 | ≥85 |
| SiO2 % | ≤0.15 | ≤ 0.3 | ≤ 9 | ≤ 14 |
| Fe2O3 % | ≤0.1 | ≤ 0.2 | ≤ 0.2 | ≤ 0.2 |
| Bulk density (g/cm3) | 1.5~1.8 | 1.5~1.8 | 1.4~1.9 | 1.4~1.9 |
| Cold compression strength (Mpa) | ≥12 | ≥15 | ≥18 | ≥18 |
| Refractoriness under load (0.1Mpa,0.6%) | ≥1700 | ≥1700 | ≥1700 | ≥1700 |
| Reheating linear change (1600℃x8h) % | -0.25 | -0.25 | ±0.2 | ±0.3 |
| Room temp to 1300℃ Thermal expansion coefficient | 8.6 | 8.6 | 8.0 | 7.8 |
| Thermal Conductivity W/(m.k) 800℃ | 0.75 | 0.75 | 0.6 | 0.55 |
Company Profile
About Ruitai Lianxin
Henan Ruitai Lianxin Refractory Materials Co., ltd is a modern R&D-centered refractories manufacturing enterprise integrated with refractories sales and marketing, furnace engineering construction, recycling and sales of waste refractories as well as refractory raw material, technology and goods import and export, and technical services.
Well-equipped and technologically advanced, ISO/QHSE-certified management underpins a product line of ordinary, medium and high-grade magnesia series brick, magnesia-chrome brick, magnesia-alumina spinel brick, magnesia-alumina- chrome basic brick, lightweight brick, clay brick, high alumina brick, corundum brick, zirconia brick, silicon carbide brick and insulation materials, monolithic castable, ramming mix, plastic, etc.
We manufacture more than 70 categories of refractory bricks with more than a thousand specifications and models, which are widely used in high-temperature kiln/furnace, non-ferrous metallurgical smelter, cement lime rotary kiln, glass-melting furnace, electric power, petrochemical hazard waste incinerator etc.
Factory Show
As a 20 refractory manufacturer, we have our own factory, professional machinery and equipments, strong technical team, complete delivery process, perfect after-sales service.
Test Equipment
We have innovative technology and advanced experimental equipment to ensure that every fire brick has the best quality and we are responsible for every customer.
Production Process
We have a complete production process, from raw materials to molding, and then to finished products. Each step is operated and inspected by dedicated personnel to ensure the high quality of the fire bricks.
Raw Materials
Mixing and Tempering
Forming
Drying
Sintering
Selecting
Packing
Shipping
Quality Control
After the refractory bricks are manufactured, we need to undergo professional testing and inspection to ensure that each high-quality refractory brick is delivered to the customer, so that the customer can rest assured.
Packaging & Shipping
Our refractory fire bricks are delivered to customers in the shortest possible time by land, sea or air.
Company Advantages
Customer Cases
As a world-renowned exporter, we have expanded our business scope to the world, providing high quality firebricks to customers worldwide. We have gained loyal customers all over the world, reached cooperation again and again, and become the first choice of global customers.
Company Certification
We are a reliable manufacturer and supplier of refractory bricks, with a number of certificates and patents to protect your kiln, and our professional team of experienced engineers and technicians are committed to providing you with excellent service.
Questions & Answers
Q1: Could I get a sample before placing an order?
A1: Yes. A sample as per your requirement can be prepared for approval.
Q2:How can I get your prompt quotation?
A2:We can give you reply with quotation quickly if you kindly send the inquiry with following factors: dimension (length*width*thickness), service temperature, application and quantity.
We’d be appreciated if you can also provide the density and content.
Q3: Do you have stocks?
A3: Yes, but only for regular size.
Q4: How do you deliver my orders?
A4: Our experts can recommend you the suitable way based on the quantity and your budget. Normally ,it is by sea.
Q5: I am a big buyer, can I get a competitive price?
A5: Yes, you will get our lowest price without quality compromise along with our professional service.As we are working with mainly players in Europe, Asia, America and Afraic.
Q6: What is your quality control?
A6: 1.Chemical inspection is performed during Raw material, production and finished products.
2.Physical test is performed for finished products.
Q7: Are you a refractory bricks manufacture or trader?
A7: We are truly a fire bricks manufacturer, we not only can provide the high quality products with the best price, but also can offer the best pre-sale service and after-service.
Q8: Do you accept size and shape customization? Are the specifications accurate?
A8: Yes! We have a professional R&D team, and advanced QC inspection equipments to ensure the accurate size and shape for you.