FIELD: metallurgy.
SUBSTANCE: invention elates to metallurgy, particularly to processing method of cadmium-containing materials, for instance cadmium-containing scrap. Method includes leaching of cadmium and its following sedimentation from solution. Additionally leaching is implemented by solution of ethylene-diamine-tetraacetate sodium at pH 9.0-9.5. After leaching it is removed from the solution ethylene-diamine-tetraacetate in molecular form by sedimentation by sulfuric acid at pH 1.0-1.6. Then it is implemented sedimentation of cadmium in the form of hydroxide by addition into solution of alkali up to pH of solution more than 9.8.
EFFECT: increasing of extraction ratio of cadmium and safety of manufacturing.
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