In modern industrial production, White Corundum, as a high-performance abrasive and refractory, is widely used in many key fields with its excellent physical and chemical properties. This paper will introduce the characteristics, advantages, application scope and market supply of white corundum in detail to help readers fully understand this important industrial material.

I. Introduction of White Corundum

White corundum, also known as White Fused Alumina or white corundum sand, is a white crystal material made from high-purity alumina powder by high-temperature electrofusion process. Its main component is alumina (Al₂O₃), and its content is usually not less than 99%. This material has the characteristics of high hardness, high toughness, acid and alkali corrosion resistance and good thermal stability, which makes it outstanding in many industrial applications.

II. Physical and chemical characteristics

The physical and chemical indexes of white corundum are as follows:

Al₂O₃ content: ≥99%

Fe₂O₃ content: ≥0.05%

K₂O+Na₂O content: ≥0.4%

SiO₂ content: ≥0.06%

True density: ≥ 3.96 g/cm.

Fire resistance: ≥ 1850 C.

Mohs hardness: 9

These characteristics make white corundum perform well in applications such as high temperature resistance, corrosion resistance and high strength grinding. Its high purity and high density ensure the stability and reliability of the material during use.

III. Product Advantages

High-quality raw materials: white corundum is produced by imported Bayer alumina, which ensures the high quality of products from the source.

Strict quality control: equipped with complete testing methods, the laboratory has passed the certification of government inspection bureau to ensure the stability of product quality.

Diversified product classification: White corundum products can be divided into chemical cleaning type, unwashed type, formed type and unformed type, etc. At the same time, products with normal density and high density can be provided to meet the needs of different customers.

Customized service: products with specific granularity can be provided according to the special requirements of customers to meet the needs of different application scenarios.

IV. Application fields

White corundum has a wide range of applications, mainly including the following aspects:

Abrasive tools: used to manufacture abrasive tools for grinding high carbon steel, high speed steel and cast steel, such as grinding wheels and abrasive belts.

Grinding and polishing: as a grinding and polishing medium, it is suitable for precision grinding and polishing, especially in ultra-precision machining of crystals and electronics industries.

Precision casting: As precision casting sand, it is used to manufacture high-quality castings.

Coating material: used for manufacturing various coating materials, such as anti-slip coating and wear-resistant coating.

Catalyst carrier: As a catalyst carrier, it is used in the catalytic process of chemical reaction.

Special ceramics and refractories: used to manufacture special ceramics and high-performance refractories, such as high-temperature furnace lining and ceramic crucible.

Insulating material: Its micropowder has excellent insulating properties and is suitable for insulating materials in electronic industry.

V. Size specification

White corundum provides a variety of granularity specifications to meet the needs of different application scenarios. The particle size range of refractory grade includes 0-1mm, 1-3mm, 3-5mm, 5-8mm, 8-12mm, -200 mesh, -325 mesh, etc. The granularity of abrasive grade includes F series (such as F12, F14, F16, etc.) and P series (such as P12, P14, P16, etc.), and customized granularity specifications can be provided according to the specific requirements of customers.

VI. Summary

As a high-performance industrial material, white corundum has been widely used in abrasive tools, grinding and polishing, precision casting, coating materials, catalyst carriers, special ceramics and refractories by virtue of its high purity, high hardness, high temperature resistance and corrosion resistance. Its diversified product classification and customized services enable it to meet the needs of different customers. With the continuous development of industrial technology, the application prospect of white corundum will be broader, providing more reliable material support for modern industrial production.