FIELD: non-ferrous metallurgy, namely methods for preparing chlorine-magnesium raw material- carnallite for electrolytic production of magnesium.
SUBSTANCE: method for chemically removing impurities from chlorine-magnesium melt comprises steps of melting solid dehydrated carnallite in vessel; treating prepared chlorine-magnesium melt by means of chemical reagent and agitating it; using as chemical reagent magnesium granules in salt envelope containing, mass%: metallic magnesium, 50 -95; chlorides of magnesium, potassium, calcium produced from salt casting waste materials of magnesium production by disintegration and separation to magnesium granules in salt envelope and to salt phase. Chemical reagent is fed onto surface or under layer of chlorine-magnesium melt. Chlorine-magnesium melt is treated in chlorinator or in furnace or in vacuum-ladle.
EFFECT: lowered consumption of chemical reagent for removing impurities from melt and therefore lowered expenses due to using relatively cheap reagent -magnesium granules in salt envelope, reduced outbursts to environment.
7 cl, 3 ex
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