Brown Fused Alumina
China's Premier Manufacturer of Brown Fused Alumina
Beyond standard Brown Fused Alumina, we specialize in providing Heat Treated Brown Fused Alumina and Surface Coated Brown Fused Alumina, tailored to your unique requirements.
Our commitment is to deliver not just products, but tailored solutions that propel your business forward. Choose us for abrasives that are designed with your unique needs in mind, ensuring your projects are powered by the best in the industry. Let’s shape the future of abrasives together, elevating your standards to new heights, NOW!
Standard Brown Fused Alumina
Heat Treated Brown Fused Alumina
Surface Coated Brown Fused Alumina
Tailored Brown Fused Alumina for Your Unique Needs
At Great Abrasive, our deep knowledge in abrasive technology enables us to provide custom Brown Fused Alumina tailored to a broad range of sizes, shapes, and uses. We’re committed to meeting your specific needs with precision-crafted abrasives.
- Custom Chemical Compositions
Offering Brown Fused Alumina from Fixed to Tilting Furnaces in grades one through three to suit your needs.
- Custom Grit Sizes and Distribution
Offering a wide range from coarse (0-10mm) to fine (F12-F1200, P12-P1200), tailored to your needs.
- Custom Grain Shapes
Recognizing the diverse needs of cutting, grinding, and sandblasting applications, we customize grain shapes to match your requirements, ensuring optimal performance for each use case.
- Heat Treatment
Our calcination treatment for abrasives boosts the performance of grinding wheels by removing rust spots and micro-cracks, enhancing toughness, and prolonging life, ensuring your grinding tools operate at their best.
- Surface Coatings
Boost abrasive performance through coatings that improve bond strength or add visual appeal, customizable to your needs.
- Customized for Use
Tailoring our production for specific applications like ceramic grinding wheels, we process our BFA with a 10,000 Gauss magnetic separator and validate it through firing trials, ensuring optimal performance.
Why Choose Brown Fused Alumina from GREAT Abrasive?
Superior Quality
Crafted from premium bauxite and advanced furnace technology, our Brown Fused Alumina boasts superior hardness, toughness, and thermal stability, delivering exceptional performance across applications.
Diverse Product Range
Our diverse range of grain sizes and specifications meets all needs, from abrasive blasting and grinding to refractory applications, ensuring the perfect fit for any requirement.
Rigorous Quality Assurance
We enforce strict quality control from raw material selection to final inspection, guaranteeing each batch of Brown Fused Alumina meets top standards and expectations.
Tailored Solutions
GREAT Abrasive specializes in custom solutions to fit unique application needs, offering modifications and special treatments as required.
Expert Support
Our experienced team offers in-depth guidance on product choice and application, ensuring optimal performance and efficiency.
Effortless Procurement
GREAT Abrasive streamlines your buying experience, ensuring a smooth process so you can concentrate on your priorities.
Choosing Brown Fused Alumina from GREAT Abrasive means investing in a product that delivers unmatched performance, supported by a company that stands firmly behind the quality and effectiveness of its abrasives. Let us be your partner in achieving superior results across your applications.
FAQ About Brown Fused Alumina
Brown Fused Alumina is a tough and hard material used as an abrasive in various applications. It’s made by fusing bauxite in an electric arc furnace at high temperatures.
It’s widely used in abrasive products, sandblasting, refractory materials, and as a raw material in the manufacturing of grinding wheels, cutting discs, and other abrasive tools.
Yes, it is versatile and can be used for various sandblasting applications, from general surface preparation to removing heavy rust.
Its high hardness, toughness, and thermal stability make it ideal for abrasive applications, allowing for efficient material removal and long product life.
Yes, its hardness and precision grain sizes make it suitable for waterjet cutting applications.
It is available in a wide range of grit sizes from very fine to coarse, tailored for different abrasive applications.
Its angular particle shape contributes to its aggressive cutting action and efficiency in material removal.
The main difference lies in their purity and applications. White Fused Alumina is purer and used in applications requiring a high precision finish, while Brown Fused Alumina is tougher and used in heavier-duty applications.
Its high thermal stability allows it to withstand high temperatures without breaking down, making it ideal for use in refractory linings and castables.
Yes, it can be recycled and reused in several cycles in abrasive blasting applications, depending on the application and operating conditions.
It is produced by melting bauxite in an electric arc furnace at temperatures above 2000°C, followed by cooling and crushing the fused mass into the desired size.
Proper protective gear, including masks, gloves, and goggles, should be worn to prevent inhalation and contact with skin or eyes.
Silicon Carbide is harder than Brown Fused Alumina, making it suitable for applications requiring extremely high hardness.
Yes, its angular particle shape and hardness make it suitable for use in anti-slip flooring aggregates.
The Al2O3 content typically ranges from 95% to 97%, making it highly abrasive.
Yes, it is considered environmentally friendly as it is made from natural bauxite and does not contain hazardous materials.
Considerations include the material to be processed, desired finish, application method, and specific requirements like toughness and thermal resistance.
Yes, its thermal properties and hardness make it suitable as a raw material in some ceramic products.
It is typically available in bags, super sacks, or bulk, depending on the quantity and specific customer requirements.
Its hardness and toughness allow for aggressive material removal, contributing to the grinding wheel’s efficiency and longevity.
Have More Questions?
We are happy to answer any questions you may have about our products and company.
How to Buy Brown Fused Alumina – A Complete Buyer’s Guide
Brown Fused Alumina serves a wide range of versatile applications, from grinding wheels production to blasting, refractories, polishing, and more. With various sizes and styles available, choosing the ideal abrasives for your requirements becomes crucial.
Suppose you are contemplating the import or purchase of Brown Fused Alumina from China. In that case, whether for your projects or wholesale distribution within your local market, this comprehensive guide is tailored to provide you with all the insights necessary to make an informed and well-considered decision.
Table of contents
Chapter 1
What is Brown Fused Alumina?
Brown Fused Alumina (BFA) is a type of synthetic abrasive that is manufactured by fusing bauxite (an aluminum ore), iron, and anthracite in an electric arc furnace at high temperatures. The resulting material is then crushed and sized into a variety of particle sizes for different applications. BFA is a hard, tough, and dense material with high thermal and chemical stability. It is characterized by its brown color, which is a result of the iron content in the raw materials.
Chapter 2
Property of Brown Fused Alumina
Brown Fused Alumina (BFA) is known for its exceptional properties that make it a versatile and indispensable material in various abrasive, refractory, and sandblasting applications. Here are some key properties of Brown Fused Alumina:
- High Hardness:
BFA has a Mohs hardness of about 9, making it one of the hardest materials available, second only to diamonds. This high hardness makes it excellent for cutting, grinding, and abrasive blasting.
- High Toughness:
Despite its hardness, Brown Fused Alumina exhibits good toughness, allowing it to withstand high-stress applications without fracturing easily.
- Thermal Stability:
It can withstand high temperatures without losing its structural integrity, making it ideal for refractory applications.
- Low Porosity:
Its low porosity means it has fewer spaces or voids in its structure, enhancing its strength and durability.
- Corrosion Resistance:
BFA resists corrosion from gases and slag, which is beneficial in refractory linings and other applications exposed to corrosive environments.
- Abrasion Resistance:
Its superior hardness and toughness make it highly resistant to wear and tear, ensuring longevity in abrasive applications.
Chapter 3
Specification of Brown Fused Alumina
| Chemical Property (%) | ||
|---|---|---|
| Spec | Resin | Vitrified |
| Al2O3 | 95.11 | 95.55 |
| TiO2 | 2.26 | 2.79 |
| SiO2 | 1.37 | 0.69 |
| Fe2O3 | 0.15 | 0.13 |
| Physical Property | ||
|---|---|---|
| Color | Brown | |
| Crystal Structure | α-Al2O3 | |
| Melting Point | 2250℃ | |
| Microhardness | 2200-2280 kg/mm2 | |
| True Density | 3.9 g/cm3 | |
Chapter 4
How is Brown Fused Alumina Produced?
Brown Fused Alumina (BFA) is produced through a specific manufacturing process that involves several critical steps. Here’s a general overview of how BFA is made:
- Raw Material Selection
The primary raw material for producing Brown Fused Alumina is bauxite, an aluminum ore that contains high levels of alumina (Al2O3) and lower levels of iron and silicon. The quality of bauxite directly influences the quality of the BFA produced. - Batch Preparation
The selected bauxite is mixed with other materials, including carbon materials (like anthracite) and iron filings. This mixture helps in reducing the alumina to aluminum and ensuring the right composition of the final product. - Melting
The prepared batch is then charged into an electric arc furnace (EAF). The EAF applies high electric current to the batch, generating intense heat that melts the bauxite and reduces the alumina to aluminum. The temperatures in the furnace can reach up to 2000°C (3632°F). - Cooling and Solidification
After melting, the molten material is poured out and allowed to cool and solidify. The cooling process can be controlled to influence the crystalline structure and, consequently, the physical properties of the Brown Fused Alumina.
- Crushing and Screening
The solidified mass, now Brown Fused Alumina, is crushed into various sizes. It is then screened to separate it into different grain sizes, from coarse grits to fine powders, depending on the intended application. - Magnetic Separation
After crushing and screening, the material undergoes magnetic separation to remove any residual metallic iron. This step is crucial for ensuring the purity and quality of the Brown Fused Alumina. - Packaging
Finally, the processed Brown Fused Alumina is packaged according to customer specifications, ready for shipping and use in various applications. - Quality Control
Throughout the production process, quality control measures are implemented to ensure that the final product meets the required standards and specifications. This includes chemical composition analysis, physical property testing, and grain size distribution checks.
The production of Brown Fused Alumina is energy-intensive and requires sophisticated equipment to maintain the high temperatures and control the cooling process. The result is a highly durable and hard material, widely used in abrasive, refractory, and other industrial applications.
Chapter 5
What is Brown Fused Alumina Used For?
Brown Fused Alumina (BFA) is a versatile abrasive material and refractory that finds applications in a variety of industrial processes due to its hardness, toughness, and thermal properties. Here are some of the primary uses of Brown Fused Alumina:
Bonded Abrasives
BFA is used in the manufacture of grinding wheels, cutting discs, and other bonded abrasive products where its hardness and durability contribute to efficient material removal.
Coated Abrasives
It is also used in making sandpaper, abrasive belts, and discs, providing a tough and durable cutting medium for surface preparation and finishing.
Refractory Materials
BFA’s thermal stability and resistance to thermal shock make it an ideal material for refractory bricks, castables, and lining materials in furnaces, kilns, and incinerators.
Sandblasting
In abrasive blasting operations, BFA is used for surface cleaning, descaling, and preparation, removing rust, paint, and other coatings from metal and other surfaces.
Anti-Skid Surfacing
Its rough texture makes BFA an excellent choice for anti-skid flooring applications, such as on highways, bridges, and airport runways, ensuring safety and durability.
Polishing
BFA is used in the polishing of metals, glass, and stone to achieve a smooth finish. Its abrasive qualities allow for effective material removal and surface smoothing.
Brown Fused Alumina’s versatility across these applications is due to its combination of physical and chemical properties, making it a valuable material in industrial and manufacturing processes.
Chapter 6
Brown Fused Alumina (BFA) can be produced in different types of furnaces, with the two main types being the tilt furnace and the fixed furnace. Each furnace type produces BFA with distinct characteristics due to differences in the manufacturing process. Here’s a brief comparison of the two:
| Item | Tilt Furnace BFA | Fixed Furnace BFA |
|---|---|---|
| Manufacturing Process | Melting in a tiltable furnace allows controlled pouring and cooling. | Melting in a stationary furnace with material tapped out for cooling. |
| Properties | Higher toughness and more uniform crystal structure due to controlled cooling. | Higher hardness with aggressive cutting ability but slightly less uniformity in toughness and crystal structure. |
| Applications | Preferred for applications requiring high toughness and durability, such as heavy-duty grinding and abrasives. | Suitable for a wide range of abrasive applications where high cutting efficiency is desired, including coated and bonded abrasives, as well as refractory materials. |
The choice between tilt furnace and fixed furnace BFA depends on the specific application requirements. For applications that demand high toughness and durability, tilt furnace BFA might be the preferred option. In contrast, fixed furnace BFA is often chosen for its cutting efficiency and is used in a broader range of abrasive and refractory applications.
Tilt Furnace BFA vs. Fixed Furnace BFA
Chapter 7
Key Considerations When Buying Brown Fused Alumina
When purchasing Brown Fused Alumina (BFA), several critical factors should be considered to ensure you get a product that meets your specific needs and offers the best value. Here are key considerations:
Chemical Composition
Check the chemical composition, especially the aluminum oxide (Al2O3) content, which should be high, and the iron oxide (Fe2O3) content, which affects the toughness and melting point.
Grain Size and Distribution
Select the appropriate grain size for your application, as it significantly impacts the material removal rate and surface finish.
Type of Furnace
Consider the furnace type (tilt vs. fixed) used in production, as it influences the toughness and hardness of the BFA.
Hardness and Toughness
Match the hardness and toughness of the BFA to your application needs for effective material removal and durability.
Thermal Properties
For refractory applications, the thermal stability of BFA is a crucial factor. Ensure the alumina can withstand the operating temperatures of your processes without degrading.
Supplier Reputation
Choose a reputable supplier known for consistent quality and reliability to reduce the risk of receiving subpar material.
Customization Options
Some applications may require customized solutions. Check if the supplier offers custom grain sizes, blends, or other modifications to meet your specific needs.
Price vs. Performance
Consider the cost-effectiveness of the product. While lower-priced options may be attractive, they might not provide the best value if they compromise on performance or lifespan.
Availability and Lead Time
Ensure the supplier can provide the quantity of BFA you need within your required timeframe. Availability and short lead times can be crucial for project timelines.
Technical Support
A supplier offering strong technical support can provide significant added value, especially for specialized applications or troubleshooting.
Taking these factors into account will help you make an informed decision when purchasing Brown Fused Alumina, ensuring that you get a product that meets your needs and contributes to the efficiency and effectiveness of your operations.
Chapter 8
Brown Fused Alumina Packaging and Transportation Tips
Purchasing Brown Fused Alumina necessitates careful packaging and transportation to maintain its quality. Here are streamlined tips for effectively handling Brown Fused Alumina:
Packaging Tips
- Moisture Barrier: Choose materials with excellent moisture resistance. Moisture-proof films or sealed bags are essential.
- Durability: Select strong, durable packaging to endure transportation pressures.
- Size Appropriateness: Ensure packaging is correctly sized for the volume, optimizing protection and efficiency.
- Pallet Corner Smoothing: Smooth pallet corners to prevent packaging damage.
- Strapping Protection: Use protective boards under straps to avoid bag damage.
Transportation Tips
- Container Organization: Arrange packages neatly in containers to prevent damage.
- Transit Protection: Secure goods well for factory-to-port transit, protecting against road hazards.
- Mixed Loading Care: When combining pallets and bulk bags, use cushioning to reduce movement and prevent damage.
- Weather Prep: In humid or rainy weather, increase packaging’s moisture protection and consider container desiccants.
Efficient packaging and transportation are critical for preserving Brown Fused Alumina quality. By focusing on moisture prevention, packaging integrity, and careful transit handling, you can ensure your Brown Fused Alumina arrives in excellent condition. Partnering with a supplier knowledgeable in these areas is key to minimizing transit risks and maintaining product standards.
Chapter 9
In Summary
Choosing the right Brown Fused Alumina is crucial for excelling in various grinding and finishing tasks, from detailed manufacturing processes to robust, heavy-duty applications. The plethora of choices available might seem daunting, particularly for those new to this field.
Enter Great Abrasive, your dependable ally and specialist in providing Brown Fused Alumina. Dedicated to outstanding quality, we supply superior products and complete solutions tailored to meet all your abrasive requirements. Leveraging over thirty years of industry experience, we simplify the selection process and craft effective solutions to meet your specific needs.
Partner with Great Abrasive for premium Brown Fused Alumina, and let us guide you through the intricacies of abrasive technology. We’re here to ensure you achieve the best possible outcomes in your surface treatment projects, enhancing efficiency and performance across the board.
Optimize Your Abrasives with Our Brown Fused Alumina!
Leverage the exceptional hardness and toughness of Brown Fused Alumina from GREAT Abrasive for unmatched durability in your abrasive applications. Customized for your specific requirements, it ensures superior performance in grinding, cutting, and blasting tasks.
