White fused alumina, a critical material in various industries, plays a pivotal role in shaping modern manufacturing processes. This high-purity aluminum oxide is renowned for its exceptional hardness and chemical stability, making it ideal for abrasive applications, refractories, and more. Understanding its production and application in China, a leading global supplier, is essential for businesses aiming to leverage its advantages.

In this guide, readers will explore the intricacies of white fused alumina, from its manufacturing techniques to its diverse applications. We will delve into the market dynamics in China, including key players, quality standards, and export trends. By the end of this guide, you will gain valuable insights into how to effectively utilize white fused alumina to enhance your operations and stay competitive in the marketplace.

Comprehensive Guide to White Fused Alumina in China

White fused alumina, also known as white corundum, is a high-purity aluminum oxide produced through the fusion of high-quality bauxite in electric arc furnaces. This material is widely used in various industries, including abrasives, refractories, and coatings. In China, several manufacturers, such as Zhengzhou Haixu Abrasives Co., Ltd., have established a strong presence in the production and export of this essential material.

Technical Features of White Fused Alumina

White fused alumina exhibits several technical characteristics that make it suitable for a variety of applications. Below is a comparison table highlighting its key technical features:

Feature	Description
Chemical Composition	Al2O3: 99.59%, Fe2O3: 0.02%
Hardness	Mohs hardness of 9.0
Melting Point	2250°C
Maximum Service Temp	Up to 1900°C
Particle Shape	Angular
Density	Bulk density: 1.55-1.95 g/cm³
Whiteness	Above 80%
Fluidity	High fluidity and dispersibility
High-temperature Resistance	Does not melt at high temperatures

These features contribute to its effectiveness in various applications, including as an abrasive material, in refractory products, and in surface treatments.

Types of White Fused Alumina

White fused alumina can be categorized into different types based on its applications and specific characteristics. Here’s a comparison table showcasing the various types available:

Type	Description	Applications
Standard White Fused Alumina	High purity, general-purpose abrasive material	Grinding, polishing, and blasting
Low Sodium White Fused Alumina	Contains minimal sodium content	Precision ceramics, where sodium contamination must be avoided
White Fused Alumina Micropowder	Ultra-fine powder for specialized applications	Polishing, microdermabrasion, and coatings
White Fused Alumina for Refractories	Designed for high-temperature environments	Refractory castables, furnace linings, and coatings
White Fused Alumina for Anti-Slip	Used as an additive for anti-slip surfaces	Floor coatings, tiles, and safety applications

Each type of white fused alumina serves distinct purposes, enhancing its versatility across multiple sectors.

Applications of White Fused Alumina

The applications of white fused alumina are vast and varied. It is commonly utilized in the following areas:

Abrasives: White fused alumina is extensively used in the manufacturing of bonded abrasives, grinding wheels, and polishing compounds. Its hardness and durability make it an ideal choice for high-performance grinding and cutting tools.
Refractories: Due to its high melting point and stability at elevated temperatures, it is used in the production of refractory materials, including castables and bricks, crucial for furnace linings and high-temperature applications.
Coatings: In the coatings industry, white fused alumina serves as an additive to improve wear resistance and surface finish. It is also employed in anti-slip floor coatings to enhance safety.

Surface Treatment: This material is used in sandblasting and surface preparation, effectively removing impurities and preparing surfaces for painting or coating.
Precision Engineering: Fine grades of white fused alumina are essential in precision engineering applications, including semiconductor manufacturing and microdermabrasion in cosmetic procedures.

Leading Manufacturers and Suppliers

In China, several manufacturers specialize in the production of white fused alumina. Notable companies include:
– Zhengzhou Haixu Abrasives Co., Ltd. (whitealumina.com): Established in 1999, this company offers a wide range of white fused alumina products and has extensive export experience to over 40 countries.
– JCT Abrasives (www.jct-abrasives.com): This company focuses on high-quality abrasives, including various types of white fused alumina tailored for different applications.
– White Corundum (whitecorundum.com): This manufacturer emphasizes the production of high-purity white fused alumina for industrial applications.
– HAIXU (hxwhitealumina.com): Known for its commitment to quality and innovation, HAIXU has been a reliable supplier of white fused alumina for over two decades.

Conclusion

White fused alumina is an essential material in the abrasives and refractories industry, characterized by its high purity, hardness, and versatility. With various types available, manufacturers can cater to specific applications, ensuring optimal performance across different sectors. Companies like Zhengzhou Haixu Abrasives Co., Ltd., JCT Abrasives, and others continue to lead in the production and innovation of this crucial material, meeting global demand effectively.

FAQs

1. What is white fused alumina used for?
White fused alumina is primarily used in abrasives for grinding and polishing, as well as in refractories and coatings.

2. How is white fused alumina produced?
It is produced by the electric fusion of high-purity Bayer processed alumina in electric arc furnaces.

3. What are the benefits of using low sodium white fused alumina?
Low sodium white fused alumina minimizes sodium contamination, making it suitable for applications in precision ceramics and sensitive electronic components.

4. Why is the particle shape of white fused alumina important?
The angular particle shape of white fused alumina enhances its cutting ability and improves its performance in abrasive applications.

5. Can white fused alumina be used in high-temperature environments?
Yes, white fused alumina is highly resistant to heat and can withstand temperatures up to 1900°C, making it ideal for refractory applications.