White Fused Alumina

• Feature: Long Time Materials
• Refractoriness (℃): Refractoriness> 2000
• Type: Alumina
• Model NO.: White corundum for making abrasive tools
• Natural Abrasive Type: Natural Corundum
• Artificial Abrasive Type: Corundum Abrasives
• Application: Machinery
• Function: Surface Deburring
• Source: Natural Abrasives
• Particle Size: Abrasive
• Hardness: Superabrasive
• Transport Package: Ton Bags and Sea Pallets
• Specification: 1.1 cubic meters
• Trademark: SY
• Origin: Xingyang District, Zhengzhou City, Henan Province,
• Production Capacity: 20, 000 Tons Per Year

Product Description

 

White Fused Alumina

Description

White fused alumina is a high-purity form of aluminum oxide, produced by fusing high-quality Bayer alumina in electric arc furnaces at temperatures above 2000°C. It is characterized by its white color, excellent hardness (9.0 on the Mohs scale), and high melting point (around 2050°C). This material is widely used in industries due to its superior abrasiveness, chemical stability, and resistance to high temperatures, making it ideal for applications like grinding wheels, sandblasting, and refractory bricks.

Specifications and Applications

White fused alumina's specifications include:

• Chemical Composition: Al₂O₃≥99.5%, SiO₂ ≤0.05%, Fe₂O₃≤0.08%, and other impurities ≤0.1%.
• Physical Properties: Bulk density 1.8-2.0 g/cm³, true density 3.95 g/cm³, melting point 2050°C, and Mohs hardness 9.0.
• Particle Size: Available in various sizes, from powder to coarse grains (e.g., F8 to F1200).

Its applications are diverse, including:

• Abrasives (e.g., grinding wheels, sandpaper)
• Refractories (e.g., bricks, castables)
• Ceramics (e.g., structural and electrical insulators)
• Blasting media (e.g., sandblasting, shot blasting)
• Polishing (e.g., precision polishing of metals and glass)
• Other uses (e.g., fillers in plastics, rubber, and paints)

This material's high purity and hardness make it unexpectedly versatile, extending beyond traditional abrasive uses into advanced ceramics and coatings.

Description

White fused alumina (WFA) is described as a high-purity aluminum oxide, produced by fusing high-quality Bayer alumina in electric arc furnaces at temperatures above 2000°C. It exhibits a white color, with a hardness of 9.0 on the Mohs scale, making it second only to diamond and silicon carbide in hardness. Its chemical stability and high melting point (approximately 2050°C) make it suitable for demanding industrial applications. This material is widely used in abrasives, refractories, ceramics, and other high-performance sectors, with its low impurity content ensuring high whiteness and purity, which is critical for applications where discoloration must be avoided.

Specifications

The specifications are detailed based on data from reliable suppliers and manufacturers, ensuring accuracy. The following table summarizes the key technical specifications:

Category

Details

Chemical Composition

Description

White fused alumina (WFA) is described as a high-purity aluminum oxide, produced by fusing high-quality Bayer alumina in electric arc furnaces at temperatures above 2000°C. It exhibits a white color, with a hardness of 9.0 on the Mohs scale, making it second only to diamond and silicon carbide in hardness. Its chemical stability and high melting point (approximately 2050°C) make it suitable for demanding industrial applications. This material is widely used in abrasives, refractories, ceramics, and other high-performance sectors, with its low impurity content ensuring high whiteness and purity, which is critical for applications where discoloration must be avoided.

Specifications

The specifications are detailed based on data from reliable suppliers and manufacturers, ensuring accuracy. The following table summarizes the key technical specifications:

Category	Details
Chemical Composition	Al2O3: ≥99.5%, SiO2: ≤0.05%, Fe2O3: ≤0.08%, TiO2: ≤0.1%, Na2O + K2O: ≤0.3%, Other impurities: ≤0.1%
Physical Properties	Color: White, Bulk Density: 1.8-2.0 g/cm³, True Density: 3.95 g/cm³, Mohs Hardness: 9.0, Melting Point: 2050°C, Thermal Conductivity: 30 W/mK, Thermal Expansion: 8.0 x 10^6 /K
Particle Size	Available in various sizes, e.g., F8 to F1200, and customized options
Crystal Form	Rhombohedral Class
Chemical Nature	Amphoteric

2These specifications were derived from sources such as Precise Ceramic and Saint-Gobain Abrasive Grains, which provide detailed technical data for white fused alumina products. The high purity (≥99.5% Al₂O₃) and hardness (Mohs 9.0) are particularly notable, extending its use beyond traditional abrasives into advanced ceramics and wear-resistant coatings.

Applications

The applications of white fused alumina are extensive, reflecting its versatility. Research suggests the following uses:

• Abrasives: Grinding wheels, sandpaper, honing stones, and coated abrasives, where its hardness ensures efficient cutting and polishing.
• Refractories: Used in bricks, castables, and monolithic refractories due to its high melting point and thermal stability, essential for high-temperature environments like steel plants.
• Ceramics: Structural ceramics and electrical insulators, benefiting from its high purity and dielectric properties.
• Blasting Media: Sandblasting and shot blasting, where its angular, brittle nature provides a powerful abrasive effect, suitable for stainless steel and aluminum surfaces.
• Polishing: Precision polishing of metals, glass, and other materials, leveraging its fine particle sizes for smooth finishes.
• Other Applications: Fillers in plastics, rubber, and paints, as well as anti-slip coatings and skin/dental care products, highlighting its unexpected versatility in non-traditional sectors.

These applications were identified from multiple sources, including Washington Mills and CUMI EMD, which list uses in refractories, ceramics, and surface treatment, among others.

≥99.5%, SiO₂: ≤0.05%, Fe₂O₃: ≤0.08%, TiO₂: ≤0.1%, Na₂O + K₂O: ≤0.3%, Other impurities: ≤0.1%

Physical Properties

Color: White, Bulk Density: 1.8-2.0 g/cm³, True Density: 3.95 g/cm³, Mohs Hardness: 9.0, Melting Point: 2050°C, Thermal Conductivity: 30 W/mK, Thermal Expansion: 8.0 x 10⁶ /K

Particle Size

Available in various sizes, e.g., F8 to F1200, and customized options

Crystal Form

Rhombohedral Class

Chemical Nature

Amphoteric

These specifications were derived from sources such as Precise Ceramic and Saint-Gobain Abrasive Grains, which provide detailed technical data for white fused alumina products. The high purity (≥99.5% Al₂O₃) and hardness (Mohs 9.0) are particularly notable, extending its use beyond traditional abrasives into advanced ceramics and wear-resistant coatings.

Applications

The applications of white fused alumina are extensive, reflecting its versatility. Research suggests the following uses:

• Abrasives: Grinding wheels, sandpaper, honing stones, and coated abrasives, where its hardness ensures efficient cutting and polishing.
• Refractories: Used in bricks, castables, and monolithic refractories due to its high melting point and thermal stability, essential for high-temperature environments like steel plants.
• Ceramics: Structural ceramics and electrical insulators, benefiting from its high purity and dielectric properties.
• Blasting Media: Sandblasting and shot blasting, where its angular, brittle nature provides a powerful abrasive effect, suitable for stainless steel and aluminum surfaces.
• Polishing: Precision polishing of metals, glass, and other materials, leveraging its fine particle sizes for smooth finishes.
• Other Applications: Fillers in plastics, rubber, and paints, as well as anti-slip coatings and skin/dental care products, highlighting its unexpected versatility in non-traditional sectors.

These applications were identified from multiple sources, including Washington Mills and CUMI EMD, which list uses in refractories, ceramics, and surface treatment, among others.

Company Profile

 

Our company, located in Xingyang, Zhengzhou, Henan Province, has been established for 24 years. We specialize in producing high-quality alumina products, including white fused alumina, brown fused alumina, and chrome fused alumina. With four electric arc furnaces and a complete production line that includes smelting, crushing, grinding, and screening, we ensure the highest quality standards. For over two decades, we've been committed to continuous learning and research, adhering to the principle that "quantity without quality equals zero." Quality is the foundation of our delivery. We warmly welcome you to visit and collaborate with us.
 

Our Advantages

 

1. 24 Years of Focused R&D and Production of Corundum
   We operate four 10-ton electric melting furnaces to ensure the high purity and stable quality of our corundum blocks.

. Efficient Acid Washing Production Line
   Guarantees the high quality and high yield of micro-powder.

3. Advanced Laboratory Testing Equipment 
   Our in-house laboratory, equipped with precise instruments, helps us strictly control product quality.

4. Five Screening Production Lines  
   Ensures sufficient output and short delivery times.

5. Quality-First Principle
   We believe that quantity without quality equals zero.

6.Excellent After-Sales Service
   Providing comprehensive and high-quality after-sales support.