The application fields of high-purity alumina in my country are gradually broadening, and the market size is gradually expanding.

High-purity alumina refers to alumina with a purity of more than 99.99%. The chemical molecular formula is Al2O3. It appears as an odorless and tasteless white crystalline powder at normal temperature and pressure, and is soluble in inorganic acids and alkaline solutions. Compared with ordinary alumina, high-purity alumina has excellent dispersion, porosity, heat resistance, insulation and other characteristics. At this stage, there are many methods for producing high-purity alumina in my country, which can be roughly divided into alkoxide hydrolysis method, modified Bayer method, flame melting method, direct hydrolysis method, multiple crystallization method, etc.

According to different purity, high-purity alumina can be roughly divided into 4N-4N5 (99.99%-99.995%), 4N5-5N (99.995%-99.998%), 5N (99.998%), etc. Among them, 4N-4N5 high-purity alumina is mainly used to produce luminescent materials, special ceramics, high-pressure sodium lamps, coating materials, catalysts and other products; 4N5 and above high-purity alumina series are mostly used to produce advanced ceramics, light-emitting diodes, lithium battery separators, LED artificial sapphire crystal, PDP phosphor and other products.

Compared with other types of batteries, lithium batteries have the advantages of high density, long service life, and lightweight, and have gradually become a substitute for lead-acid batteries. In recent years, my country’s science and technology has gradually progressed, lithium battery production technology has gradually matured, and its application fields have gradually broadened. It has been widely used in mobile power supplies, military, power grids, electric vehicles, power tools and other fields, and market demand has gradually increased. As one of the important internal components of lithium batteries, lithium battery separators directly affect the capacity and cycle performance of lithium batteries, and its market demand is gradually growing. Driven by the downstream market, my country’s lithium battery separator shipments are increasing. In 2022, my country’s lithium battery separator market shipments will reach 12.38 billion square meters, a year-on-year increase of 58.7%. High-purity alumina is the core material for the production of lithium battery separators, and its market demand has gradually increased.

According to the “2023-2027 High Purity Alumina Industry In-depth Market Research and Investment Strategy Suggestions Report” released by the Industrial Research Center, As my country’s production technology gradually advances, its application fields gradually expand. High-purity alumina is widely used in LED lighting, semiconductors, electronic products, aerospace, medicine and other fields. Driven by downstream market demand, my country’s high-purity alumina market has gradually expanded. In 2022, my country’s high-purity alumina market size will be approximately 3.61 billion yuan, a year-on-year increase of 3.3%.

Industry analysts said that competition in my country’s high-purity alumina market is fierce and there are a large number of companies. my country’s large-scale high-purity alumina companies mainly include Jingrui New Materials, Hailan Ruisi, Lianlian Chemical, Jingxin Crystal, Xiling Electronics, China Ceramics Materials, Honghe Chemical, Zhongtian Lixin, Baird New Materials, etc. . Since my country’s high-purity alumina industry started late, there is still a certain gap between production technology and international advanced technology, mainly concentrated in the low-end market. As R&D investment increases and production technology improves, my country’s high-purity alumina companies will gradually realize domestic substitution of high-end products.