1、 Due to the influence of alumina supply, the cost of aluminum melting accounts for 28% – 34% of the production cost of aluminum ingot. Due to the high concentration of the international alumina market, most of the world’s alumina (80% – 90%) are sold through long-term contracts, so there is very little alumina available for sale in the spot market. Take China as an example. Before 1997, China’s alumina gap was mainly purchased from the international spot market without long-term contracts. In 1997, China Nonferrous Metals and Alcoa signed a 30-year long-term supply contract, with 400000 tons per year. The price was set according to a certain proportion of LME’s original aluminum price. In recent years, with the continuous expansion of China’s electrolytic aluminum production scale, the domestic demand for alumina is also growing. At present, about two-thirds of the imported alumina needs to be purchased from the spot market. According to statistics, in 2004, China imported 5.87 million tons of alumina, a year-on-year increase of 4.8%. The average import price was 340 US dollars (the cash cost of foreign alumina production was less than 120 US dollars). According to simple calculation, direct import of alumina in 2004 alone paid more for foreign alumina suppliers The cost is as high as several billion yuan. The rising price of alumina makes the production cost of electrolytic aluminum production enterprises rise sharply, and the economic benefits decline sharply, and most enterprises fall into meager profits or losses.
2、 When the relationship between supply and demand is in a temporary balance, the market price of the commodity will fluctuate in a narrow range; when the relationship between supply and demand is unbalanced, the price will fluctuate greatly. In the aluminum futures market, investors can pay attention to an indicator reflecting the change of aluminum supply and demand – inventory. The inventory of aluminum profile shell is divided into report inventory and non report inventory. The reported inventory is also known as “explicit inventory”, which is the inventory quantity of aluminum in its designated delivery warehouse published by Futures Exchange on a regular basis. The non reported inventory mainly refers to the amount of aluminum held by producers, traders and consumers worldwide. Since there is no special agency for statistics and release of these inventories, these inventories are also known as “hidden inventory”.
3、 At present, the average power consumption per ton of aluminum in aluminum plants at home and abroad is controlled below 15000 kwh / T. The experience of aluminum ingot production in western countries shows that when the electricity charge exceeds 30% of the cost of aluminum production, it is considered as dangerous production.
4、 The influence of economic situation has become an important variety of non-ferrous metals, especially in developed countries or regions, aluminum consumption has been highly related to economic development. When a country or region’s economy develops rapidly, aluminum consumption will also increase synchronously. Similarly, the economic recession will lead to the decline of aluminum consumption in some industries, and then lead to the fluctuation of aluminum price. In addition, the price fluctuation of some metals related to aluminum, the fluctuation of international oil price, and the changes of industrial policies in various countries will have an impact on aluminum price.
5、 The influence of import and export tariff and international exchange rate, the price and settlement of international aluminum 6 trade are generally in US dollars. In recent years, the trend of US dollar has an obvious impact on aluminum price. The influence of import and export tariff on the price of aluminum profile shell is particularly prominent in China.
6、 The influence of the improvement and innovation of aluminum profile shell production process on the aluminum price, the rapid application of computer technology in the aluminum electrolysis industry, led to the in-depth study of the physical field in the electrolysis process and the establishment of the relevant mathematical model, so that the design of the electrolytic cell is more reasonable and the cell capacity is greatly increased
