The types of fine alumina are becoming increasingly abundant and the output is gradually increasing.

Fine alumina, also known as non-metallurgical grade alumina, special alumina, etc., is an aluminum-based material made from aluminum hydroxide and alumina as raw materials through multiple processes such as calcination, purification, grinding, and classification. However, in The crystal morphology, chemical purity, surface properties, crystal phase conversion rate, etc. are quite different from alumina or metallurgical grade aluminum hydroxide. Fine alumina has the advantages of high temperature resistance, excellent thermal conductivity, and good insulation properties, and can meet the specific material needs of different downstream fields. With the gradual advancement of production technology, the types of fine alumina are increasing day by day. According to different chemical compositions, they can be roughly divided into pseudo-boehmite, zeolites, aluminum salts, aluminum hydroxide, etc.

As an inorganic non-metallic material with excellent physical and chemical properties, fine alumina is mostly used to produce catalysts, grinding and polishing materials, transparent ceramics, fluorescent materials, refractory materials, integrated circuits and other products. It is widely used in semiconductors, electronic information, new energy, machinery, etc. , aerospace, metallurgy, medicine and other fields have been widely used.

In the field of semiconductors, fine alumina can be used directly as abrasive materials, mostly used to remove contaminants on the surface of silicon wafers, making the surface of the silicon wafers smoother, thus improving the performance and reliability of semiconductor products. In the field of lithium batteries, fine alumina is mainly used to produce lithium battery separator materials, which can not only extend battery life, improve battery safety and stability, but also improve battery charge and discharge performance. Overall, the market demand for fine alumina is relatively huge.

According to the “China Fine Alumina Industry Market In-depth Research and Development Prospects Forecast Report 2023-2028” released by the Industrial Research Center, As my country’s semiconductor, lithium battery, and new energy markets continue to develop, the market demand for fine alumina is gradually growing. Against this background, my country’s fine alumina enterprises have gradually expanded their production scale and increased their output. In 2022, my country’s fine alumina output will be 326,000 tons, a year-on-year increase of 4.35%.

The main foreign fine alumina companies include Nabot, Sumitomo Chemical, Ammann Aluminum, Showa Denko, etc. The main domestic fine alumina companies include Tianma New Materials, China Aluminum, China Ceramics Materials, Boqian New Materials, etc. Foreign fine alumina companies have relatively advanced production technology and a wide range of products, occupying first-mover advantages. Domestic fine alumina companies started relatively late, have a relatively single product structure, and focus more on niche areas. However, in recent years, our country’s enterprises have continued to develop, fine alumina production technology has gradually improved, product types have become increasingly rich, and market competitiveness has been greatly improved.

Industry analysts said that while my country’s fine alumina industry is developing rapidly, there are still some defects in the industry, such as product homogeneity. There are serious industrialization, technical barriers in the high-end market, and fierce competition in the low-end market. In order to improve these problems, my country’s fine alumina companies need to continue to carry out research and development innovation, optimize production technology, and develop more new products, thereby breaking down technical barriers in the high-end market.