FIELD: metallurgy.
SUBSTANCE: claimed process comprises slag leaching at increased temperature at uniform loading of slag into hydrochloric acid solution to get the pulp to be cured to convert the nonferrous metals and iron into liquid phase and silicon dioxide into solid phase. Then, said liquid and solid phases are separated. Prior to loading, the slag is ground to particle size of not over 100 mcm. Leaching is performed in the presence of oxidizer at redox potential of 350-450 mV. Solid phase separated, it is flushed at S:L = 1:5-30.
EFFECT: stable high yield of nonferrous metals and iron, production of silicon dioxide, improved labour conditions.
7 cl, 7 ex
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