White corundum is a high-purity artificial abrasive, mainly composed of aluminum oxide (Al ₂ O3), with a content of over 99%, and containing small amounts of iron oxide, silicon oxide and other components.
The preparation process of white corundum mainly includes steps such as raw material selection, melting, crystallization, and processing. Firstly, high-purity alumina is selected as the raw material, which is finely processed and mixed before being melted in a high-temperature electric arc furnace. During the smelting process, aluminum oxide is melted and crystallized into white corundum by controlling the temperature and atmosphere. Finally, white corundum products with different particle sizes and shapes are obtained through processing techniques such as crushing and grinding.
White corundum is a widely used abrasive product in the industrial field, characterized by high hardness, high temperature resistance, and good chemical stability. The main component of white corundum is alumina, which has high purity, good self sharpening ability, strong grinding ability, low heat generation, high efficiency, acid and alkali corrosion resistance, and good high-temperature stability. The main uses of white corundum include the following aspects: grinding and grinding tool manufacturing. Due to its high hardness and sharp cutting edges, white corundum is suitable for grinding fine-grained materials such as high carbon steel, high-speed steel, and stainless steel. The grinding tool made of white corundum sand performs excellently in processing. Polishing: Fine grained white corundum is widely used for surface beautification treatment of various crafts or hardware products. After polishing, the surface is white and free of impurities, without the need for additional cleaning. Sandblasting rust removal: White corundum is commonly used for the removal of metal oxide layers, carbide black skin, and rust on metal or non-metal surfaces, such as the removal of oxides in gravity die-casting molds and rubber molds. Refractory material: White corundum is widely used in the walls and roofs of various high-temperature furnaces. Due to its high temperature resistance and insulation properties, it is one of the commonly used insulation materials. In addition, it is also processed into lightweight corundum bricks, hollow corundum spheres, and fiber products. Mechanical manufacturing: In the mechanical manufacturing industry, white corundum is used in the processing and polishing of various mechanical parts to improve the surface quality of workpieces. Chemical fillers: In the chemical industry, white corundum serves as a catalyst carrier or adsorbent filler, which can improve chemical reaction efficiency and product quality. Other applications: White corundum is also used for etching graphic design in the jade carving industry, as well as for making mechanical parts and various molds, such as wire drawing molds, extrusion pencil lead molds, etc.
With the advancement of technology and the development of industry, the application fields of white corundum will continue to expand. In the future, the preparation technology of white corundum will be further optimized and improved, reducing costs and improving production efficiency. Meanwhile, with the development of new materials and technologies, substitutes for white corundum will continue to emerge. Therefore, the white corundum industry needs continuous innovation and progress to adapt to market changes and development needs.
