Description of High Alumina Light Weight Insulation Brick:

High Alumina Light Weight Insulation Brick, also called high alumina insulation brick, the alumina content is ablove 48%, the major crystalline phase is mullite、corundum and glass phase. Build density between 0.4~1.35g/cm3, cold crushing strength between1-8 MPa. It has the characteristics of high service temperature, low impurity content, high temperature resistance and good heat insulation performance.

High alumina insulation brick usually use high bauxite clinker and a small amount of clay, after fine grinding,using gas bubble method or forming methord pouring and forming in the form of mud, burn into the 1300~1500 ℃. Sometimes industrial alumina can be used instead of some bauxite clinker. Used for lining and insulating layer of masonry kiln, as well as parts without strong erosion and scour of high temperature molten materials. Direct contact with the flame, the contact surface temperature is not higher than 1350 ℃.

Technical Parameter of High Alumina Light Weight Insulation Brick:

Item Index
LG-1.2 LG-1.0 LG-0.8 LG-0.7 LG-0.6 LG-0.5
Al2O3  % ≥48
Fe2O3  % ≤2
Bulk Density  g/cm3 ≤1.2 ≤1.0 ≤0.8 ≤0.7 ≤0.6 ≤0.5
Cold Crush Strength,MPa ≥4.5 ≥3.5 ≥2.5 ≥2.2 ≥1.6 ≥1.2
Permanent Linear Change Rate,% 1400℃×12h
Thermal Conductivity W/(m·K)
≤0.55 ≤0.50 ≤0.35 ≤0.30 ≤0.25 ≤0.20


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1.Abundant Experience. Rongsheng Group have over 20 years experience in the refractory industry and we have a deep understanding of the materials and applications we work with. We can provide expert advice and guidance to help customers find the best solutions for their needs.

2.Quality products. We pride ourselves on providing high-quality refractory products that are made to last. Our materials are carefully sourced and tested to ensure they meet our strict standards.

3.Competitive Price. We offer competitive pricie on all of our products without sacrificing quality and make the products competitive in your market.

4.Customization. We understand that every customer is unique, which is why we offer customized solutions tailored to their specific requirements. Whether it’s a custom shape or size, we can work with customers to create the ideal product for their application.

5.Safety. We take safety seriously and ensure that all of our products meet safety standards. Safty packing, prompt delivery time, and excellent after-sales services.

6.Large stocks. With a large stock of products on hand, we can better serve our customers, save money, and gain a competitive edge in their industry.

7. Overall solutions. We offer optimal and comprehensive solutions to supply the necessary refractory material for your high temperature kiln.

8.Long-term relationships. We believe in building long-term relationships with our customers based on trust and mutual benefit. We are committed to providing ongoing support and service to ensure customer satisfaction. Rongsheng Refractory can be used in many fields of steel, nonferrous metals, glass, cement, ceramic, petrochemical, machinery, boiler, light, and power industries. What’s more, Industrial distributors, refractory contractors, sales agents, trading companies, and refractory consultants can all benefit from promoting and selling our top-of-the-line refractory products. With a focus on durability, longevity, and performance, our products are designed to exceed your expectations and provide your customers with the best possible results.

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