| Customization: | Available |
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| Natural Abrasive Type: | Fused Alumina |
| Artificial Abrasive Type: | Corundum Abrasives |
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Brown Fused Alumina, also known as Brown Aluminum Oxide, is a synthetic mineral material celebrated for its exceptional hardness and superior wear resistance. Crafted through the meticulous melting of bauxite, iron filings, and anthracite in a high-temperature electric arc furnace, followed by a precise cooling, crushing, and screening process, this product boasts unparalleled physical and chemical properties. Its outstanding characteristics make it indispensable across a variety of industrial applications.
| TYPICAL CHEMICAL ANALYSIS | |
| Al2O3 | 95.88% |
| TiO2 | 2.17% |
| SiO2 | 1.25% |
| Fe2O3 | 0.08% |
| PHYSICAL PROPERTIES | |
| Color | Brown |
| Shape | Sharp grain shape |
| Crystal Form | Alpha alumina trigonal system |
| Specific Gravity | 3.95 |
| Hardness | 2090 Knoop scale, 9.0 Mohs scale |
| Magnetic Material | 0.01% |
Brown fused alumina is widely used in various industrial applications due to its hardness, toughness, and high melting point:
Abrasives: In grinding wheels, sandpaper, blasting media, and other abrasive products.
Refractories: In the production of refractory bricks, castables, and other materials that can withstand high temperatures.
Surface Preparation: For cleaning, deburring, and preparing surfaces in industries such as metalworking and automotive.
Ceramics: As an ingredient in ceramic products requiring high durability and resistance to thermal shock.
| TYPICAL BULK DENSITY | |||||||
| Grit (F) | g/cm³ | Grit (F) | g/cm³ | Grit (F) | g/cm³ | Grit (F) | g/cm³ |
| 12 | 1.74 | 30 | 1.77 | 60 | 1.65 | 120 | 1.51 |
| 14 | 1.72 | 36 | 1.76 | 70 | 1.62 | 150 | 1.48 |
| 16 | 1.72 | 40 | 1.72 | 80 | 1.59 | 180 | 1.46 |
| 20 | 1.72 | 46 | 1.71 | 90 | 1.55 | 220 | 1.44 |
| 24 | 1.79 | 54 | 1.69 | 100 | 1.54 | ||
The production of brown fused alumina (BFA) involves several stages, typically encompassing raw material preparation, fusion, cooling, crushing, and classification. Here's a detailed overview of the process:
Raw Material Preparation:
Bauxite: The primary raw material is bauxite, which contains a high percentage of alumina (Al2O3). The bauxite is carefully selected to ensure the desired alumina content and minimal impurities.
Iron filings or scrap iron: Added to the mixture to aid in the reduction process during fusion.
Anthracite coal: Used as a reducing agent.
Fusion:
Electric Arc Furnace (EAF): The prepared mixture is fed into an electric arc furnace. The furnace generates high temperatures (around 2000-2200°C or 3632-3992°F) through electric arcs struck between carbon electrodes.
Reduction and Fusion: At these high temperatures, the alumina in bauxite melts and reacts with the carbon from anthracite to produce molten alumina. Iron and other impurities are reduced and separated.
Cooling:
Cooling the Molten Alumina: The molten alumina is poured out of the furnace into molds or onto a cooling floor. Controlled cooling is crucial to achieve the desired crystal structure and size.
Formation of Ingots: As the material cools, it solidifies into large ingots or blocks of fused alumina.
Crushing and Grinding:
Primary Crushing: The cooled ingots are first broken down using jaw crushers or other heavy machinery.
Secondary Crushing and Grinding: The material is further crushed and ground into smaller sizes using cone crushers, roll crushers, and ball mills. This process continues until the desired particle size is achieved.
Magnetic Separation:
Removing Metallic Impurities: The ground material is passed through magnetic separators to remove any remaining iron particles and other metallic impurities.
Sieving and Classification:
Particle Size Distribution: The crushed and cleaned alumina is then sieved into different grades based on particle size. This is done using vibrating screens and air classifiers.
Quality Control: Each batch is tested for chemical composition, particle size distribution, and other quality parameters to ensure it meets industry standards.
Packaging:
Final Product: The classified brown fused alumina is packaged into bags or bulk containers for distribution. Packaging is done in a way to protect the product from contamination and moisture.
Storage and Distribution:
Warehousing: The packaged BFA is stored in warehouses until it is shipped to customers.
Shipping: Distribution methods depend on the customer's location and order size, ranging from palletized shipments for smaller orders to bulk shipments for large industrial customers.
Drums and Barrels:
Luoyang Frere Import and Export Trading Co., Ltd. is a distinguished trading company specializing in refractory materials and abrasive media. With an integrated approach combining industry and trade, we boast well-equipped testing facilities and robust technical expertise. Our two factories, located in Luoyang city, Henan province, bring 24 years of experience in producing Brown Fused Alumina (BFA) and White Fused Alumina (WFA).
Leveraging our strong factory relationships, we offer premium Cutting Wheels, Grinding Wheels, and Flap Discs at competitive prices. Our products enjoy widespread recognition and trust, adeptly meeting the evolving economic and social demands of the market. We are committed to quality and customer satisfaction, ensuring our offerings consistently meet the highest standards.
At Luoyang Frere, we value long-term partnerships and look forward to the opportunity to collaborate with your esteemed company. Our team is eager to support your needs and contribute to your success in the near future.
At Frere company, we believe that our responsibility to our customers extends well beyond the point of sale. Our comprehensive after-sales service is designed to ensure your continued satisfaction and success with our products. Here's what you can expect when you choose us as your abrasive and refractory supplier:
1. Technical Support:
Our team of experienced engineers and technical specialists is available to provide expert advice and support. Whether you need assistance with product selection, application techniques, or troubleshooting, we are here to help you achieve the best results.
2. Product Training:
We offer thorough training programs to ensure your team is fully equipped to use our products effectively and safely. Our training covers everything from basic handling to advanced application methods, tailored to your specific needs.
3. Warranty and Repairs:
All our products come with a robust warranty. Should you encounter any issues, our dedicated service team will provide prompt repairs or replacements, ensuring minimal disruption to your operations.
4. Regular Follow-ups:
We believe in proactive customer service. Our team will conduct regular follow-ups to check on the performance of our products and gather feedback. This helps us continuously improve and tailor our offerings to better meet your needs.
5. Maintenance Services:
To maximize the lifespan and efficiency of our products, we offer maintenance services. Our experts can help you develop a maintenance schedule and provide on-site support to keep your equipment in optimal condition.
6. Rapid Response:
In the event of an urgent issue, our rapid response team is on hand to provide immediate assistance. We understand that time is critical in your operations, and we strive to resolve any problems as quickly as possible.
7. Spare Parts Availability:
We maintain a comprehensive inventory of spare parts to ensure you have quick access to the components you need. Our efficient logistics network guarantees fast delivery, reducing downtime and keeping your operations running smoothly.
8. Customer Feedback Loop:
Your feedback is invaluable to us. We actively seek your input on our products and services, using it to drive continuous improvement. Our goal is to exceed your expectations in every interaction.
9. 24/7 Customer Service:
Our dedicated customer service team is available 24/7 to address any concerns or questions you may have. Whether it's a simple query or an emergency situation, we are always here to support you.
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