FIELD: chemistry.
SUBSTANCE: method of obtaining hydrogen fluoride includes sulfuric acid decomposition of fluorine-containing material of aluminium production with heating of reaction mixture. As fluorine-containing material used are highly dispersive fluorocarbon-containing waste of aluminium production and/or secondary fluorine-containing products of aluminium production. Content of fluorides and metal oxides in composition of applied materials is determined, and optimal dose of sulfuric acid is calculated.
EFFECT: invention makes it possible to extend raw base of raw material for production of hydrogen fluoride, utilise secondary fluorine-containing products and wastes of electrolytic aluminium production.
12 cl, 2 tbl, 1 ex
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