Preparation and application technology of alumina
1. Production and preparation of high-purity alumina
The preparation methods of alumina can be divided into two categories: physical methods and chemical methods; most of the alumina powders used in today's society are made of bauxite as raw materials and are produced by the traditional Bayer process, but are produced by the traditional Bayer process. The alumina has low purity and poor performance, which cannot meet the requirements of rapid industrial development.
High-purity alumina has superior optical, thermal, magnetic, and mechanical properties that ordinary alumina does not have. As a new material, it is widely used in high-tech industries, and the demand is increasing every year. Although the performance requirements of alumina are different in different fields, the basic requirements of alumina are high purity, uniform particle size and other properties.
The preparation conditions and preparation methods of high-purity alumina play a decisive role in the high purity of the prepared alumina, whether the particle size is uniform, whether it has the characteristics of easy sintering, etc., so the preparation technology of high-purity alumina is particularly important. important.
2. Application of alumina in high-end market
High-purity alumina is a white micro-powder material with a purity of more than 99.99%, uniform particle size and stable chemical properties. Low sodium content. Because high-purity alumina has many advantages, it is widely used in the product industry in many fields.
With the vigorous development of the domestic mobile phone market, the output of domestic lithium battery separators is also increasing. The rapid expansion of sapphire applications has also increased the market's demand for high-purity alumina. In the field of special ceramics, alumina ceramics are oxidized In the field of electronics, there are various alumina ceramic bottom plates, substrates, etc., in the chemical industry, there are alumina ceramic films, coatings, etc., in the medical field, there are artificial bones, artificial teeth, alumina The base fiber can be made into a thermal insulation material and applied to the space shuttle, and the alumina can also be used in fields such as mirror polishing.
With the advancement of science and technology, the application of alumina in the high-end market will become more and more extensive.
