What is aluminium oxide? Alumina oxide is a stable oxide of aluminium with the chemical formula Al2O3. It is also known as bauxite in mining, the pottery industry and materials science. It is a white solid that is difficult to dissolve in water, odourless, tasteless, extremely hard, and easy to absorb but not moisture solution (burned ones do not absorb moisture). Alumina is a typical amphotropic oxide (corundum is α -shaped and belongs to the densest accumulation, is an inert compound, slightly soluble in acid and alkali corrosion resistance), can dissolve in inorganic acid and alkaline solution, almost insoluble in water and nonpolar organic solvent; relative density (d204) 4.0; melting point 2050℃. They are usually sealed for dry storage. Aluminium oxide contains elemental aluminium and oxygen. If the bauxite raw materials are after chemical treatment, remove silicon, iron, titanium and other oxides and make the product a high purity of alumina raw materials, Al2O3 content is generally above 99%. The ore phase is composed of 40% to 76% γ -Al2O3 and 24% to 60% α -Al2O3.γ-Al2O3 changed from 950 to 1200℃ to α -Al2O3 with a significant volume contraction.
Main uses of aluminium oxide The role of alumina is very wide, such as: 1. The main components of ruby and sapphire are alumina because of other impurities and present different colours; sapphire contains iron oxide and titanium oxide and appears blue.2. The content of alumina is highest in the main component, iron and it. In industry, it is purified from the Bayer process to alumina and then transformed from the Hall-Heroult process to aluminium metal.3. Aluminum reacts with the oxygen in the air to create a dense thin film of alumina covering the aluminium surface exposed to the air.4. Aluminum is a good conductor of electricity and heat. The crystal form of alumina is suitable for grinding materials and cutting tools because of its high hardness.5. Alumina powder is commonly used as a medium for colour layer analysis.6. Make reinforced glass called transparent alumina out of alloy synthesized aluminium and rare earth. In addition, in the production of ceramics: alumina is divided into calcined alumina and ordinary industrial alumina; calcined alumina is the necessary raw material for the production of antique bricks, and industrial alumina can be used in the production of microcrystalline stone, in the traditional glaze, alumina is commonly used as whitening. Because the market favours archaized bricks and micronized, the amount of alumina also increases yearly.
Price of aluminium oxide The different price of aluminium oxide purity is also different. The market price of aluminium oxide is in the process of dynamic change. The price of aluminium oxide can be found on our company's official website. If you need it, you can ask us at any time.
Aluminium oxide supplier Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including molybdenum Silicide, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective aluminium oxide, you are welcome to contact us or inquire at any time.
