In modern industrial production, abrasive plays an indispensable role as a key material for processing, grinding and polishing. Among many abrasive products, fused white corundum has become the first choice for many enterprises because of its excellent performance and wide application fields. This paper will introduce the characteristics, advantages, applications and market prospects of fused white corundum in detail to help readers fully understand this high-performance abrasive material.

I. Definition and preparation of fused white corundum

Fused white corundum, also known as white corundum, white fused alumina or white alumina oxide, is an abrasive material made of high-purity alumina powder as the main raw material through high-temperature electrofusion process. Its production process involves heating alumina powder to a very high temperature in an electric arc furnace, melting and crystallizing it to form white corundum crystals with high hardness and good toughness. This material is widely used in industrial fields because of its white appearance, excellent chemical stability and high strength.

II. Physical and chemical characteristics

The physical and chemical characteristics of fused white corundum make it stand out among many abrasives. Its main component, aluminum oxide (Al₂O₃), has a content of over 99%, while impurities such as iron (Fe₂O₃), potassium (KO) and sodium (Na₂O) are extremely low, accounting for 0.05%, 0.4% and 0.06% respectively. This high-purity chemical composition endows white corundum with excellent acid and alkali corrosion resistance and high temperature resistance. Its true density reaches 3.96 g/cm³, Mohs hardness reaches 9, and its melting point exceeds 1850 C. These characteristics enable white corundum to maintain stable performance in extreme environment, which is suitable for various high-strength and high-precision industrial processing requirements.

III. Product Advantages

High-quality raw material: fused white corundum uses imported Bayer alumina powder as raw material, which ensures the high purity and consistency of the product. Bayer alumina powder has the characteristics of fine particles and uniform distribution, which can ensure the formation of uniform crystal structure during high temperature melting, thus improving the overall performance of products.

Strict quality control: the production process is equipped with a complete detection method, and the laboratory is certified by the government inspection bureau to ensure the stability of product quality. From the screening of raw materials, the monitoring of smelting process to the detection of finished products, every link is strictly implemented in accordance with international standards to ensure that each batch of products can meet the high-quality requirements of customers.

Diversified product specifications: fused white corundum has a variety of products, which can meet the needs of different customers. According to the processing mode, products can be divided into chemical cleaning type and non-cleaning type; According to the shape, it can be divided into molding and non-molding; According to the bulk density, it can be divided into ordinary bulk density and high bulk density. In addition, the products also provide a variety of particle size specifications, including refractory grade (such as 0-1mm, 1-3mm, 3-5mm, etc.) and abrasive grade (such as various particle sizes of F series and P series), which can meet various processing requirements from rough grinding to ultra-fine grinding.

IV. Application fields

The excellent properties of fused white corundum make it widely used in many industrial fields:

Abrasive tool manufacturing: Abrasive tools made of white corundum (such as grinding wheel, abrasive belt, sandpaper, etc.) are suitable for grinding high-strength metal materials such as high-carbon steel, high-speed steel and cast steel. Its high hardness and good toughness can ensure that abrasive tools can still maintain stable cutting performance under high speed rotation and high pressure, prolong the service life of tools and improve machining efficiency.

Grinding and polishing: In the field of precision grinding and polishing, white corundum micropowder has become an ideal grinding medium because of its fine and uniform particles and excellent insulation performance. It can be used for ultra-precision grinding and polishing of high-precision parts such as crystals and electronic components, ensuring high smoothness and dimensional accuracy of the machined surface.

Refractory: White corundum has a high melting point and good corrosion resistance, which makes it an ideal raw material for manufacturing high-quality refractories. It can be used to produce refractory products such as high-temperature furnace lining and ceramic kiln furniture, and can withstand extreme high-temperature environment and chemical erosion, prolong the service life of refractory materials and improve the operation efficiency of industrial furnaces.

Special ceramics and catalyst carriers: White corundum can also be used to manufacture special ceramic materials and catalyst carriers. Its stable chemical properties and high strength can provide good support for the catalyst, while maintaining stability at high temperature and chemical reaction environment, and improving the activity and service life of the catalyst.

V. Market Prospect and Development Trend

With the acceleration of global industrialization, the demand for high-performance abrasives and refractories is increasing. Fused white corundum has a very broad market prospect because of its excellent performance and wide application fields. In the future, with the continuous progress of technology, the production efficiency of white corundum will be further improved and the product quality will be more stable. At the same time, with the increasingly stringent environmental protection requirements, green production will become the development trend of white corundum industry. Enterprises will pay more attention to energy conservation, emission reduction and resource recycling, and develop more environmentally friendly production processes to meet the requirements of sustainable development.

In addition, with the rise of high-end manufacturing industry, the demand for refinement and high performance of white corundum will continue to increase. For example, in aerospace, electronics, automobiles and other high-end fields, higher requirements are put forward for the granularity accuracy, purity and performance consistency of abrasives. White corundum production enterprises will develop products that meet the needs of high-end market through technological innovation and product upgrading, and further expand their application fields and market share.

VI. Summary

As a high-performance abrasive material, fused white corundum has an irreplaceable position in the industrial field with its high purity, high hardness, good toughness and excellent chemical stability. Its diversified product specifications and wide application fields enable it to meet the needs of different customers, while strict production management and quality control ensure the high quality and stability of products. With the continuous progress of industrial technology and the continuous expansion of market demand, fused white corundum will have a broader development space in the future, providing strong support for the development of global industry.

When choosing fused white corundum products, customers are advised to choose appropriate product specifications and quality grades according to their own processing needs and application environment. At the same time, cooperation with professional manufacturers can ensure high-quality products and perfect after-sales service, thus improving production efficiency and product quality and realizing the sustainable development of enterprises.