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Aluminium fluoride trihydrate, or AlF3, is a colorless solid that occurs naturally as the mineral rosenbergite. It can also be synthetically manufactured from treating hydrogen fluoride with alumina or aluminium oxide at 700 degC. It is a very stable and insoluble compound that is very useful for oxygen sensitive applications.
aluminum fluoride trihydrate is a chemical compound with the molecular formula AlF3*xH2O, where x is equal to 0 or 1 (in which case it can be called anhydrous alfl). It has a molecular structure of D3h symmetry and has an alpha-bonded crystalline network. It is slightly soluble in water, acids and alkalis.
It is used as an inhibitor for secondary fermentation in alcohol production, as a flux ingredient in the manufacture of low index films, and as a source of ions in ceramic glazes and enamels. It is also used in the production of fluoroaluminate glasses, and as a catalyst for organic synthesis.
Hexafluosilicic acid method technique, also known as the phosphate fertilizer by-product technique, is a technology for producing aluminium fluoride. Its primary raw material hexafluosilicic acid is a by-product of phosphoric acid plant in a wet process, and it is an efficient production method for aluminium fluoride.
Hexafluosilicic acid method is a technical solution to overcome the disadvantages of existing dry and wet technique, including: Firstly, it reduces hexafluosilicic acid concentration, so it can be used in fluoride silicic acid recovery system of the phosphoric acid plant. Secondly, it overcomes the disadvantage of the existing aluminum fluoride slurry filtration weak effect, and it can achieve a good aluminum fluoride trihydrate slurry filtration effect.