Application of high purity alumina

High-purity alumina powder has high purity (Al203≥99.99%), fine particle size and evenness, which is superior to conventional materials in optical, thermal, magnetic, electrical and other characteristics. It is one of the high-end materials with the highest added value and the most extensive application in modern chemical industry.At present, the global annual demand for high-purity alumina exceeds 7500t, and the main production areas are in Europe and America.China's alumina production is mainly industrial alumina, product purity and particle size are difficult to meet the market high-end demand.With the development of China's economy, the demand for high-purity ultra-fine alumina powder will continue to increase.

High purity alumina has the outstanding characteristics of porosity, high dispersion, insulation, heat resistance and so on. It has been widely used in artificial crystal, fine ceramics, transparent ceramics, bioceramics, semiconductor integrated circuit substrate and so on.General 3N high purity alumina is mainly used for advanced ceramics,4N high purity alumina is mainly used for phosphor, 5N high purity alumina is used for sapphire crystal, lithium battery diaphragm, advanced ceramics, PDP phosphor and some high-performance materials.In recent years, the application field of high purity alumina continues to expand, sapphire glass of intelligent terminal is a new application field, the downstream industry growth rate is fast mainly include lithium battery diaphragm coating field and sapphire field.