METHOD OF CHLORINATION OF RARE METALS RAW MATERIALS

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FIELD : metallurgy of rare metals; methods of rare metals raw materials chlorination. SUBSTANCE : the invention is pertaining to metallurgy of rare metals, in particular, to the methods of rare metals raw materials chlorination. The technical result of the invention is an increased speed of the rare metals raw materials chlorination and decreased consumption of reactants due improved wetting of the carbon-containing deoxidizing agent with a saline melt. The method includes a grinding of rare metals raw materials, its batching with the carbon-containing deoxidizing agent, treatment of the charge with 0.5-2.0 % water solution of soluble potassium silicate or sodium silicate or their mixture, a graining, drying of granules and a chlorination of the granular raw at the temperature of 750-1000°C in a melt containing an alkali metal chloride or a mixture of chlorides of alkali and alkali-earth metals. EFFECT : the invention ensures an increased speed of chlorination of the rare metals raw materials and decreased consumption of reactants. 8 ex