Knowra Aluminium fluoride Aluminium fluoride Aluminium fluoride (AlF₃) is an inorganic compound of aluminium and fluorine. It is used chiefly as an additive in aluminium smelting to lower the operating temperature of the electrolyte.
Hall–Héroult process : An electrolytic process that produces aluminium by reducing alumina dissolved in molten cryolite. Aluminium fluoride is added to the electrolyte in this principal method of aluminium production.
Aluminium fluoride crystal structure : The arrangement of aluminium and fluorine atoms in crystalline AlF₃, commonly described by a network of corner-sharing AlF₆ octahedra. The solid’s extended structure distinguishes it from simple molecular compounds.
Aluminium : A lightweight metallic chemical element with atomic number 13. Aluminium fluoride contains aluminium as its positively charged component.
Sodium fluoride : An inorganic salt, NaF, composed of sodium and fluoride ions. Unlike aluminium fluoride, sodium fluoride is not the principal bath additive in aluminium smelting.
Cryolite : A sodium aluminium fluoride mineral, Na₃AlF₆, used as a solvent for alumina in aluminium smelting. Together with cryolite, aluminium fluoride adjusts the smelting bath’s composition and operating temperature.
Aluminium–fluorine bond : The chemical interaction between aluminium and fluorine, with substantial ionic character in aluminium fluoride. This bond forms the basic chemical link within AlF₃.
Fluorine : A highly reactive halogen element with atomic number 9. Fluorine supplies the fluoride ions in AlF₃.
Aluminium chloride : An aluminium halide with the formula AlCl₃, used as a catalyst and chemical feedstock. Its chloride chemistry and catalytic uses contrast with aluminium fluoride’s dominant smelting role.
Aluminium smelting : The industrial extraction of aluminium metal from alumina, usually by electrolysis in a molten fluoride bath. This is the industrial setting in which aluminium fluoride is chiefly consumed.
Aluminium trifluoride : The chemical substance AlF₃, in which each formula unit contains one aluminium atom for every three fluorine atoms. This name emphasizes the three-to-one composition represented by aluminium fluoride’s formula.
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