Description of High Alumina Refractory Bricks
High alumina brick is a kind of alumina-silicate refractory material with content of alumina oxide more than 48%. It is calcined and formed by the raw material of bauxite or the material with high content of AL2O3. High thermal stability, the refractoriness is more than 1770℃. Good slag resistance, used for the liner of masonry steel-making electric stove, glass furnace and cement revolver.
If Al2O3 content of High alumina refractory brick is higher than 90%, it is called corundum brick. Due to different resources, the standards of different countries are not completely consistent. For example, in European countries, the lower limit of Al2O3 content for high alumina refractories is 42%. In China, Al2O3 content in high alumina brick is generally divided into three grades: Grade I – Al2O3 content > 75%; grade II – Al2O3 content is 60-75%; grade III – Al2O3 content is 48-60%.
Features of high alumina bricks
1. Good thermal conductivity
2. High temperature strength
3. Good slag resistance, acid and alkali resistance.
4. High thermal stability
5.Al2O3 Content(%): 48%~85%
6.Low apparent porosity
Application Of High Alumina Refractory Bricks
High alumina brick is widely used in blast furnaces, Hot Blast Stove,Steel ladle lining, Reheating furnace, Cement kiln, Tunnel kiln,boiler, coke oven, carbon furnace, glass kiln , Steel smelting furnace and various kiln lining and thermotechnical equipment, etc. In addition, high alumina bricks can also be processed into open hearth regenerative grid bricks, socket bricks for pouring system, nozzle bricks, etc. according to the requirements of industrial furnaces.
Technical Data of High Alumina Refractory Bricks
|High Alumina Refractory Brick Physical and Chemical Index:|
|Refractoriness (°C )||≥1790||≥1790||≥1790||≥1770||≥1750|
|Bulk density (g/cm3)||2.65||2.5||2.45||2.4||2.3|
|Softening temperature under load (°C )||1530||≥1520||≥1500||≥1470||≥1420|
|Reheating Linear changes Rate (%)||1500°CX2H||0.1||0.1||0.1||0.1||0.1|
|Apparent porosity (%)||22||≤23||≤23||≤22||≤22|
|Cold crushing strength (Mpa)||55||≥50||≥45||≥40||≥35|
|Application||steel furnace, glass furnace, sodium silicate furnace, ceramic shuttle kiln, cement rotary kiln, blast furnace, electric furnace, blast furnace and reverberatory furnace.|
Why choose us?
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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