1、 Definition and classification of imported alumina

        Aluminum oxide (Al ₂ O3) is a white powdery inorganic compound made from bauxite through processes such as roasting, leaching, and precipitation. Imported aluminum oxide is a type of product that enters the Chinese market through international trade channels. According to industry usage and purity differences, it is mainly divided into two categories:

        Metallurgical grade alumina: purity range of 98.5% -99.5%, accounting for over 85% of the total import volume. The core is used for electrolytic aluminum production, and impurity content needs to be controlled (such as SiO ₂ ≤ 0.05%, Fe ₂ O3 ≤ 0.03%) to ensure the stability of the electrolysis process;

        Non metallurgical grade alumina: purity ≥ 99.8%, divided into special alumina (such as high-temperature alumina, activated alumina) and grinding grade alumina, used in specific industrial fields such as ceramics, refractory materials, and pharmaceuticals, accounting for about 15% of the total import volume.

        2、 Core data of imported alumina in China (2024)

        According to the 2024 statistical data from the General Administration of Customs and the report from the China Nonferrous Metals Industry Association, Chinas imported alumina exhibits the following characteristics:

        Total imports: In 2024, China imported approximately 8.6 million tons of alumina, a decrease of 3.2% compared to 2023, mainly due to the steady release of domestic alumina production capacity (domestic production capacity reached 92 million tons in 2024, a year-on-year increase of 5.1%);

        3、 The main application areas of imported alumina

        In the field of electrolytic aluminum production, it accounts for 85% of the imported alumina consumption. Metallurgical grade alumina, as the core raw material for electrolytic aluminum, consumes about 1.92 tons of alumina for every ton of primary aluminum produced. In 2024, Chinas electrolytic aluminum production will be approximately 42 million tons, of which approximately 16 million tons of primary aluminum will be produced through imported alumina, accounting for 38.1% of the total production;

        In the field of refractory materials: accounting for 8% of imported usage, non metallurgical grade high-temperature alumina (melting point 2054 ℃) is used to produce refractory bricks and castables, mainly supplied to the steel and glass industries. In 2024, about 690000 tons of high-temperature alumina will be imported, of which 60% will be used for the construction of blast furnace lining in steel enterprises in North China;

        Ceramic industry sector: accounting for 5% of import volume, high-purity alumina (≥ 99.9%) is used to produce high-precision ceramic components (such as electronic ceramic substrates, ceramic bearings). In 2024, about 430000 tons of such products will be imported, mainly flowing to ceramic industrial parks in Guangdong and Zhejiang;

        Pharmaceutical and chemical industries: accounting for 2% of imported usage, activated alumina is used as adsorbent and catalyst carrier, such as antibiotic purification in the pharmaceutical industry and desulfurization adsorption in the chemical industry. The import volume is about 170000 tons in 2024, with an average import price of about 650 US dollars per ton.

        4、 The process and quality standards for importing alumina

        Import process:

        Procurement process: Domestic enterprises sign procurement contracts with overseas suppliers through international trade platforms (such as London Metal Exchange LME, Shanghai Metal Network SMM), specifying purity, impurity content, delivery time, and other terms;

        Customs declaration process: Certificates of origin, quality inspection certificates (issued by third-party organizations in the exporting country, such as SGS and BV), packing lists, and other documents are required. Customs will conduct sampling testing on alumina in accordance with the Import and Export Commodity Inspection Law, mainly verifying indicators such as purity and particle size distribution;

        Transportation and Storage: Bulk shipping is the main method (accounting for 90% of the import volume), and after arrival at the port, it is stored in dedicated silos. The storage period usually does not exceed 3 months to avoid moisture absorption and affect performance;

        Core Quality Standards:

        International standard: Following ISO 8028:2017 "Aluminum Oxide for Aluminum Production", specifying the chemical composition and physical performance requirements (such as angle of repose and wear index) of metallurgical grade aluminum oxide;

        Chinese National Standard: Complies with GB/T 24487-2020 "Aluminum Oxide", where the Al ₂ O3 content of metallurgical grade aluminum oxide must be ≥ 98.5%, and the moisture content must be ≤ 0.5%; Non metallurgical grade activated alumina must meet the purity and adsorption performance requirements in GB/T 6609.37-2021 "Chemical Analysis Methods for Alumina".

        5、 Factors and Trends Influencing the Imported Alumina Market

        Main influencing factors:

        International aluminum prices: The linkage between alumina prices and London Metal Exchange (LME) aluminum prices is strong, with an average LME aluminum price of $2250/ton in 2024, driving a slight increase of 2.3% in the average price of imported metallurgical grade alumina compared to 2023;

        Shipping cost: The average shipping price of alumina from China to Australia (20 foot container) is about $85 per container in 2024, a decrease of 12% compared to 2023, which to some extent reduces import costs;

        Policy factors: Currently, import tariffs are subject to the most favored nation rate (3%), and quota management has not yet been implemented, resulting in a relatively stable policy environment;

        Development trend:

        Optimization of Import Structure: The proportion of non metallurgical grade alumina imports is expected to increase from 15% in 2024 to 20% in 2026, due to the growing demand for high-purity alumina in domestic high-quality ceramics and electronic materials;

        Diversification of supply chain: Domestic enterprises are gradually expanding into source countries in Africa and Southeast Asia (such as Ghana and Malaysia), reducing dependence on a single country. In 2024, imports from Africa will increase by 18% year-on-year;

        Green procurement: Some enterprises prioritize the procurement of alumina produced using renewable energy sources such as hydropower and solar energy. In 2024, the import volume of green alumina is about 520000 tons, accounting for 6% of the total import volume, and it is expected to reach 10% by 2026.

        Imported alumina, as an important raw material in Chinas industrial sector, directly affects the production and operation of industries such as electrolytic aluminum and ceramics due to its supply stability. With the upgrading of domestic industries and the demand for green development, the future import market will gradually develop towards high purity, greenness, and diversification. At the same time, it is necessary to continue to pay attention to the fluctuations in the international aluminum industry chain and changes in shipping costs to ensure supply chain security.