Which industries are antimony trioxide generally used in?

In the increasingly fierce market competition, aluminum industry needs to find new development ideas to avoid risks in order to achieve long-term development. As a high-tech, high value-added pure aluminum meets this requirement, many aluminum plants have put high-purity aluminum projects on the agenda. Compared with the traditional one-step processing of aluminum ingots, the production of high-purity aluminum fluoride has higher product added value and profit space. High purity aluminum fluoride refers to aluminum with aluminum content ≥ 99.999% (5N). High purity aluminum fluoride has many excellent properties and is widely used. It has better conductivity, ductility, reflectivity and corrosion resistance than the original aluminum, and is widely used in the electronic industry and aerospace field. In the electronic industry, it is used to manufacture aluminum foil of high-voltage capacitor, high-performance wire, integrated circuit bonding wire; In the aerospace industry, high-purity aluminum fluoride is used to develop plasma sails (the latest power to promote spacecraft); In high-speed rail transit, high-speed rail transit vehicles not only need high-purity aluminum fluoride to make high-performance alloys, but also have been widely used in magnetic suspension materials due to its low permeability and light specific gravity. In optical applications, aluminum reflectors are widely used in the automotive industry, such as headlight reflectors and astronomical telescopes. The use of high-purity aluminum fluoride as a mirror for large astronomical telescopes is also being studied abroad. With the further understanding and development of the properties of high-purity aluminum fluoride, the application prospect of high-purity aluminum fluoride is increasingly broad.

China's annual output of high-purity aluminum fluoride is less than 100000 tons, and the supply of products exceeds the demand. According to relevant statistics, the annual gap of domestic high-purity aluminum fluoride is more than 100000 tons. At present, there are two mature purification technologies in the world: three-layer electrolysis and separation. Now the three-tier liquid method is widely used, and the separation method has the advantages of power saving, low energy consumption and environmental protection, with an average power saving of 6000 KWH per ton. The segregation method adopts the physical method. The whole process does not involve any other added substances and does not require special additional energy to promote the solidification and segregation process. Except for the gas and dust produced by aluminum smelting itself, no toxic and harmful substances will be produced in the production process, which meets the requirements of the current environmental protection production. Xinjiang Zhonghe Aluminum Plant and Guizhou Aluminum Plant have adopted this separation method. It is reported that other domestic aluminum plants are also considering production and cooperation with relevant scientific research institutions. It is believed that with the development of domestic production technology and the improvement of product quality, high-purity aluminum fluoride will be the new direction of aluminum industry development. According to this theory, in the process of electrochemical polishing, a passive film is formed on the surface by anodic polarization, and only a dense passive film can inhibit the crystallization corrosion of the surface. Due to the different passivation degree of the concave convex part on the anode surface, the chemical activity of the concave convex part is relatively high, and the passivation film formed at the beginning is often incomplete and porous, while the concave convex part is in a relatively stable passivation state. Therefore, the dissolution damage of the passive film at the convex part is greater than that at the concave part, resulting in corrosion of the convex part. This is repeated until a stable and dense passivation film, which allows the electrochemical polishing effect to be maximized. Although this theory has been fully explained in micro polishing, it cannot explain the whole process of electrochemical polishing