FIELD: metallurgy.
SUBSTANCE: halogenation of initial raw material is performed at heating with gaseous brome so that calcium bromide and iron bromide (II) is formed. Then, oxidation of calcium bromide is performed with tenfold excess amount of oxygen of the stoichiometrically required one at temperature of >742°C with extraction of calcium oxide and gaseous brome. Gaseous brome is returned to the process cycle to halogenation stage of initial calcium-containing raw material.
EFFECT: extraction of calcium oxide and recycling of the reagent used at decomposition of calcium-containing mineral raw material.
5 cl, 2 dwg, 3 ex
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