FIELD: nonferrous metallurgy and inorganic compounds technologies.
SUBSTANCE: invention is directed to processing of calcium chloride solutions produced by gas-treatment plants when carrying out reuse of titanium-magnesium production emission gases. Process according to invention comprises treating calcium chloride solution with reducer in the form of sodium hydrosulfide solution followed by concentrating solution and thermally treating it with flue gases in fluidized bed. Along with reducer, calcium oxide is added to solution in amount corresponding to 0.005-0.01 wt parts per 1 wt part of solution. Resulting mixture is heated, stirred, solid phase is removed and clarified solution is concentrated and thermally treated.
EFFECT: reduced level of magnesium chloride in finished product due to conversion thereof into insoluble magnesium oxide.
4 cl, 2 ex
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