Chemical properties: heating, with liquid ammonia or sulfuric acid or melt no reaction with potassium hydroxide. Not by hydrogen reduction, strong but sublimation heat decomposition, nature is very stable. Heated to 300-400 ℃ can be water vapor part is decomposed into hydrogen fluoride and alumina.
Functions and purposes: mainly used in aluminium production, in order to reduce the melting point and improve the conductivity of the electrolyte. In the production of alcohol used as a pair of fermentation inhibitors. Also used as fluxing agent in the production of ceramic glaze and porcelain enamel glaze and the glaze composition. Also can be used as a flux smelting non-ferrous metal.
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From:Fluorides