Views: 222 Author: Rebecca Publish Time: 2025-06-21 Origin: Site
Content Menu
● What is White Fused Alumina?
● Production Process of White Fused Alumina
● Applications of White Fused Alumina
● Top 10 White Fused Alumina Manufacturers in China
>> 1. Dragon Abrasives Group Limited
>> 2. Zhengzhou Haixu Abrasives Co., Ltd.
>> 3. Henan Taoang Industrial Co., Ltd.
>> 4. Zhengzhou Haoyun New Material Technology Co., Ltd.
>> 5. Henan Fireramo Industrial Co., Ltd.
>> 6. Honrel Refractory & Abrasive Materials
>> 8. Xinli Abrasive Materials
>> 9. SICHENG White Fused Alumina
>> 10. Whitecorundum.com (China Factory)
● Comparison Table of Leading Manufacturers
● Additional Insights on White Fused Alumina
>> Quality Control and Standards
>> Environmental and Safety Considerations
>> Case Study: Application in Waterjet Cutting
>> Technical Specifications and Grades
>> Challenges and Opportunities
● Frequently Asked Questions (FAQ)
>> 1. What is the main difference between white fused alumina and brown fused alumina?
>> 2. What are the typical applications of white fused alumina?
>> 3. How is white fused alumina produced?
>> 4. What are the key properties of white fused alumina?
>> 5. Why is China the leading producer of white fused alumina?
White Fused Alumina (WFA), also known as white corundum or white aluminum oxide, is a premium synthetic abrasive and refractory material produced by fusing high-purity alumina powder in an electric arc furnace at temperatures exceeding 2000°C. Renowned for its extreme hardness (Mohs 9), high purity (typically over 99% Al₂O₃), chemical stability, and thermal resistance, white fused alumina is indispensable in industries such as abrasives, refractories, ceramics, metallurgy, and electronics.
China stands as the global leader in white fused alumina production, with a robust industrial chain and a growing international presence. This article profiles the top 10 white fused alumina manufacturers in China, highlighting their strengths, capabilities, and contributions to the global market.
White fused alumina is a crystalline compound produced by melting pure alumina powder in an electric arc furnace, resulting in a material with a distinctive white color, high hardness, and excellent thermal and chemical stability. Its typical properties include:
- Hardness: 9 on the Mohs scale (second only to diamond and silicon carbide)
- Purity: >99% Al₂O₃
- Melting Point: ~2050°C
- Grain Shape: Angular
- Specific Gravity: 3.9–4.1 g/cm³
These attributes make white fused alumina ideal for high-performance applications requiring abrasion resistance, strength, and stability in extreme conditions.
The manufacturing process of white fused alumina involves several critical steps to ensure high purity and optimal physical properties:
1. Selection of High-Purity Alumina: Only high-grade alumina powder with minimal impurities is used.
2. Electric Arc Furnace Fusion: The alumina is melted at temperatures above 2000°C, eliminating impurities and forming pure aluminum oxide crystals.
3. Cooling and Solidification: Controlled cooling produces dense, crystalline alpha alumina.
4. Crushing and Sizing: The solidified mass is crushed and ground to various grain sizes, tailored for different applications.
5. Magnetic Separation and Sieving: Iron and other contaminants are removed, and particles are sorted by size.
White fused alumina's unique combination of hardness, purity, and chemical stability enables its use in a variety of industries:
- Abrasives: Sandpaper, grinding wheels, polishing compounds, lapping media
- Refractories: Shaped and unshaped refractory products, kiln furniture, insulating bricks
- Ceramics: Advanced ceramic components, injection molding, slip casting
- Surface Treatment: Sandblasting, shot peening, surface finishing
- Metallurgy: Additives for high-performance alloys, anti-corrosion coatings
- Electronics and Optics: Substrates, insulating materials, precision instruments
Location: Tianjin, China
Profile:
Dragon Abrasives Group Limited is a leading manufacturer and exporter of white fused alumina and other abrasive materials. Their product range covers bonded abrasives, coated abrasives, super abrasives, and artificial corundum, serving both domestic and international markets.
Strengths:
- ISO 9001 certified manufacturing
- Wide product portfolio including brown, pink, and black aluminum oxide, zirconia alumina, silicon carbide, and boron carbide
- Large-scale production capacity (5,000 MT/month)
- OEM and customized solutions for global brands
Applications:
Abrasives, sandblasting, refractories, ceramics, waterjet cutting, polishing, and surface conditioning.
Location: Zhengzhou, Henan Province
Profile:
Founded in 1999, Haixu is a professional white fused alumina manufacturer with over 20 years of experience. The company offers a full range of WFA products, including fraction, grit, and micro powder, serving abrasives, sandblasting, paint coating, and ceramics industries.
Strengths:
- Three advanced powder production lines
- Strict quality control from raw material to finished product
- Global exports to Asia, Europe, America, and beyond
Location: Henan Province
Profile:
TAOANG Industrial is a major supplier of white fused alumina, brown fused alumina, and other corundum products, with a factory in Sanmenxia Corundum Industrial Park. They offer a wide variety of specifications and grades.
Strengths:
- Modern production facilities
- Wide product range for abrasives and refractories
- Customizable grain sizes and packaging
Location: Zhengzhou, Henan Province
Profile:
Haoyun New Material is a prominent manufacturer and exporter of abrasives, including white fused alumina and related refractory materials. The company emphasizes quality and innovation in its product offerings.
Strengths:
- Advanced technology and equipment
- Strong R&D capabilities
- Focus on export markets
Location: Xinmi City, Henan Province
Profile:
Henan Fireramo specializes in high-purity white fused alumina for refractory and abrasive applications, with a sprawling factory and over 400 employees. Their WFA products are widely used in cement, glass, steel, and chemical industries.
Strengths:
- High-purity alumina (up to 99.67% Al₂O₃)
- Large-scale, automated production
- Customizable solutions and grain sizes
Location: China
Profile:
Honrel is a reputable supplier of abrasive and refractory materials, including white fused alumina. They focus on high-quality, thermally stable products for demanding industrial applications.
Strengths:
- Comprehensive manufacturing process
- Emphasis on purity and consistency
- Global distribution network
Location: China
Profile:
Hongfeng Abrasives manufactures white fused alumina with high purity and low sodium content, suitable for refractory and abrasive uses. They offer a variety of grain sizes and packaging options.
Strengths:
- High-purity WFA (up to 99.45% Al₂O₃)
- Acid and alkali resistance
- Custom packaging and sizing
Location: China
Profile:
Xinli produces both white and brown fused alumina, with a focus on high-end abrasive and polishing applications. Their WFA is favored for its superior cutting force and brightness.
Strengths:
- High alumina content (>99%)
- Suitable for fine grinding and polishing
- Strong technical support
Location: China
Profile:
SICHENG is a specialized WFA manufacturer with advanced production lines and strict quality control. Their products are widely used in abrasives, refractories, and surface treatment industries.
Strengths:
- Modern Barmac production line
- Real-time microscopic screening
- Focus on high-density, sharp particles
Location: China
Profile:
This factory offers high-purity white fused alumina with low sodium content and uniform particle size. Their WFA is used as an anti-slip additive and in various industrial products.
Strengths:
- 99.59% Al₂O₃ purity
- Low impurities and high whiteness
- Flexible supply and fast delivery
| Manufacturer | Purity (Al₂O₃) | Main Strengths | Applications | Export Markets |
|---|---|---|---|---|
| Dragon Abrasives Group Limited | >99% | Large scale, OEM, ISO | Abrasives, Refractories | Global |
| Zhengzhou Haixu Abrasives | >99% | 20+ years, R&D, Export | Abrasives, Ceramics | Global |
| Henan Taoang Industrial | >99% | Variety, Customization | Abrasives, Refractories | Global |
| Zhengzhou Haoyun New Material | >99% | Tech, Export focus | Abrasives, Refractories | Global |
| Henan Fireramo Industrial | Up to 99.67% | Large scale, Custom | Refractories, Abrasives | Global |
| Honrel Refractory & Abrasive | ~99.7% | Purity, Consistency | Abrasives, Refractories | Global |
| Hongfeng Abrasives | Up to 99.45% | Low sodium, Packaging | Refractories, Abrasives | Global |
| Xinli Abrasive Materials | >99% | Fine grinding, Support | Abrasives, Polishing | Global |
| SICHENG White Fused Alumina | >99% | Density, Sharpness | Abrasives, Surface Treat. | Global |
| Whitecorundum.com (China Factory) | 99.59% | High whiteness, Supply | Anti-slip, Industrial | Global |
Manufacturers of white fused alumina in China adhere to strict quality control measures to ensure product consistency and performance. ISO 9001 certification is common among leading producers, reflecting their commitment to quality management systems. Testing includes chemical composition analysis, particle size distribution, hardness testing, and impurity level checks.
The production of white fused alumina involves high-temperature processes that require careful environmental management. Leading manufacturers implement measures to reduce emissions, recycle waste materials, and ensure worker safety through protective equipment and training.
Chinese manufacturers invest in research and development to improve the properties of white fused alumina. Innovations include producing ultra-fine powders for advanced ceramics, enhancing thermal shock resistance for refractories, and developing customized abrasives for specific industrial applications.
China's white fused alumina industry continues to expand its global footprint. Increasing demand from automotive, electronics, and aerospace sectors drives growth. Export markets include North America, Europe, Southeast Asia, and the Middle East, with manufacturers offering OEM services and tailored solutions.
White fused alumina is widely used as an abrasive in waterjet cutting technology. Its hardness and angular shape enable efficient cutting of metals, stone, and composites. Chinese manufacturers supply high-quality WFA abrasives that meet international standards, supporting industries such as construction, automotive, and aerospace.
White fused alumina is available in various grades, including coarse grit for heavy grinding, medium grit for general-purpose use, and fine powder for polishing and finishing. Specifications such as particle size, purity, and sodium content are critical for selecting the right grade for each application.
While China dominates production, challenges include maintaining consistent quality, meeting environmental regulations, and competing with emerging producers. Opportunities lie in expanding high-tech applications, improving product customization, and enhancing global partnerships.
White fused alumina is a high-purity, high-hardness abrasive and refractory material essential to modern industry. China leads the world in WFA production, with manufacturers like Dragon Abrasives Group Limited, Zhengzhou Haixu Abrasives, and others offering top-quality products for global markets. This article reviews the top 10 Chinese WFA manufacturers, their strengths, and the diverse applications of white fused alumina, providing valuable insights for buyers and industry professionals.
White fused alumina is made from pure alumina powder and has a higher alumina content (>99%) than brown fused alumina (>95%), which also contains anthracite and iron filings. WFA is harder and used for finer grinding and polishing, while brown fused alumina is used for general grinding and deburring.
WFA is widely used in abrasives (sandpaper, grinding wheels), refractories (bricks, castables), ceramics, surface treatment (sandblasting), and as an additive in metallurgy and electronics.
It is produced by melting high-purity alumina powder in an electric arc furnace at over 2000°C, followed by controlled cooling, crushing, sizing, and purification to achieve the desired grain size and purity.
Key properties include high hardness (Mohs 9), high purity (>99% Al₂O₃), chemical inertness, thermal stability, angular grain shape, and high melting point (~2050°C).
China has abundant raw materials, advanced production technology, large-scale manufacturing capabilities, and a mature industrial chain, making it the world's largest and most competitive WFA producer.
