Overview of High Alumina Calcined Bauxite 55% 70% 80% 90% Al2O3 Refractory Aggregate

High Alumina Calcined Bauxite 55% 70% 80% 90% Al2O3 Refractory Aggregate is manufactured from 99%+ pure aluminum oxide (Al₂O₃), delivering exceptional mechanical strength and thermal stability. These advanced ceramic parts maintain dimensional stability in extreme environments up to 1800°C, making them perfect for demanding applications in semiconductor equipment, aerospace components, chemical processing, and high-temperature industrial machinery.

Features of High Alumina Calcined Bauxite 55% 70% 80% 90% Al2O3 Refractory Aggregate

Ultra-High Temperature Resistance – Withstands continuous operation up to 1800°C

Exceptional Mechanical Strength – Superior hardness and wear resistance compared to metals

Corrosion & Chemical Proof – Resists acids, alkalis, and harsh industrial chemicals

Electrical Insulation – Excellent dielectric properties for electronic applications

Customizable Designs – Available in complex geometries with tight tolerances (±0.01mm)

(High Alumina Calcined Bauxite 55% 70% 80% 90% Al2O3 Refractory Aggregate)

Specification of High Alumina Calcined Bauxite 55% 70% 80% 90% Al2O3 Refractory Aggregate

High Alumina Calcined Bauxite is a premium refractory material. It’s made from high-grade bauxite ores. These ores are carefully selected. They undergo intense calcination in rotary kilns. This process removes impurities and drives off moisture. It produces a very dense, hard aggregate. This material is known for its high alumina content. We offer different grades to suit various needs. The common grades are 55%, 70%, 80%, and 90% Al2O3. The alumina percentage directly impacts the material’s performance. Higher alumina means better performance. It usually means higher refractoriness and better strength.

The 55% Al2O3 grade offers solid performance for cost-sensitive applications. It provides good resistance to heat and basic slags. The 70% Al2O3 grade is a popular choice for many refractory applications. It delivers an excellent balance of properties and value. It boasts higher refractoriness and strength than the 55% grade. The 80% Al2O3 grade is a high-performance material. It features even greater refractoriness and resistance to abrasion. It withstands aggressive chemical environments well. The top-tier 90% Al2O3 grade offers superior properties. It has the highest refractoriness and best corrosion resistance. It performs exceptionally well under extreme conditions.

All grades share important characteristics. They have high refractoriness under load. This means they maintain strength at very high temperatures. They possess excellent volume stability. They resist thermal shock and spalling well. They exhibit good resistance to chemical attack. This includes resistance to acids and alkalis. These properties make them indispensable in demanding industries. They are widely used in iron and steel making. You find them in blast furnaces, ladles, and tundishes. They are essential in cement and lime kilns. They serve in non-ferrous metal production. They are used in power generation boilers. They are found in foundry applications too. Their durability ensures long service life in harsh environments.

We supply High Alumina Calcined Bauxite in various sizes. Sizes range from fine powders to coarse aggregates. Common sizes include fine grains like 0-1mm or 1-3mm. Medium sizes include 3-5mm or 5-8mm. Larger sizes include 8-15mm or even bigger lumps. The specific size depends on the application requirements. Proper sizing is crucial for optimal refractory performance. Packaging is typically in durable woven sacks. Each sack usually holds 25 kilograms or one metric tonne. Bulk shipment options are also available.

(High Alumina Calcined Bauxite 55% 70% 80% 90% Al2O3 Refractory Aggregate)

Applications of High Alumina Calcined Bauxite 55% 70% 80% 90% Al2O3 Refractory Aggregate

High alumina calcined bauxite is a special material. It is very heat-resistant. Manufacturers make it by heating raw bauxite rock. This process removes water and makes it very hard. The alumina (Al2O3) content is important. Different percentages mean different properties.

We offer several common grades: 55% Al2O3, 70% Al2O3, 80% Al2O3, and 90% Al2O3. The higher the alumina, usually the better the performance under extreme heat. It also often means better strength and chemical resistance. Each grade serves specific purposes.

This material is mostly used for making refractory products. Refractories line high-temperature furnaces and kilns. They protect the equipment from melting or damage. High alumina bauxite aggregate is a key ingredient. It goes into different refractory mixes.

For instance, it is vital in refractory castables. Workers pour or pump these castables into place. They set hard. The bauxite aggregate gives the castable its backbone. It helps the lining withstand intense heat and wear. Higher alumina grades like 80% or 90% are common here. They handle tougher conditions.

It is also used in shaped refractory bricks. Manufacturers press and fire these bricks. Adding high alumina bauxite aggregate makes the bricks stronger. It helps them last longer in harsh environments. Lower grades like 55% or 70% might be used for less extreme applications.

Beyond refractories, this aggregate has other uses. It is excellent for making high-temperature cement. This cement binds refractory bricks together. It needs to be just as heat-resistant as the bricks. High alumina bauxite aggregate ensures this.

It is also used for producing special ceramics. These ceramics need high thermal shock resistance. The aggregate provides that stability. Furthermore, it serves as an abrasive grain. Its hardness makes it good for blasting or grinding.

Choosing the right alumina percentage matters. It depends on the temperature needed. It also depends on the chemical environment. Higher alumina generally means higher cost. But it offers better performance where needed. Lower grades offer good value for less demanding tasks.

Company Profile

Alumina Technology Co., Ltd,. We focus on the research and development, production and sales of alumina products, serving the electronics, ceramics, chemical and other industries. Since its establishment in 2005, the company has been committed to providing customers with the best products and services, and has become a leader in the industry through continuous technological innovation and strict quality management.

Our products includes but not limited to Alumina Boat, Alumina Crucible, Alumina Dish, Alumina Foam Filter, Alumina Plate, Alumina Rod, Alumina Bar, Alumina Balls, Filter Alumina, Nano Alumina Powder, Spherical Alumina Powder, ect. please feel free to contact us.([email protected])

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of High Alumina Calcined Bauxite 55% 70% 80% 90% Al2O3 Refractory Aggregate

High alumina calcined bauxite is a key material. It’s used for making high-temperature linings. People often have questions about it. Here are five common ones.

What is high alumina calcined bauxite? It’s a special rock. It gets heated very hot. This makes it strong. It contains a lot of alumina. Alumina helps resist heat. Common grades are 55%, 70%, 80%, and 90% Al2O3.

Why use this material? Its main job is handling heat. It doesn’t melt easily. It stays solid in furnaces. It also resists wear and chemicals. This makes linings last longer. It saves money on repairs.

How is it made? First, raw bauxite is mined. Then it goes into a kiln. The kiln heats it intensely. This removes water. It makes the minerals stable. The process creates a hard, dense aggregate. That aggregate gets crushed to size.

What’s the difference between 55%, 70%, 80%, 90%? The number shows the alumina content. Higher alumina means better performance. It withstands higher temperatures. It resists corrosion better. But it also costs more. Choose based on your furnace needs.

What are the benefits? It extends refractory life. It reduces downtime. It improves thermal efficiency. It provides reliable heat protection. This leads to lower operating costs. It’s a smart investment for tough conditions.

(High Alumina Calcined Bauxite 55% 70% 80% 90% Al2O3 Refractory Aggregate)