METHOD OF METAL RECOVERY FROM SOLID-PHASE RAW-MATERIALS

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FIELD : metallurgy. SUBSTANCE : method of metal extraction recovery from solid-phase of raw-materials includes crushing of raw materials, leaching by means of direct microemulsion, consisting of aqueous phase and organic phase, containing kerosene in the capacity of extractant di-(2-ethylhexyl) sodium phosphate, separation of solid phase and re-extraction of recovered metals. At that leaching is implemented by microemulsion, consisting of 30-75% turn of aqueous phase and containing in organic phase di-(2- ethylhexyl) sodium phosphate in amount 1.0-2.0 mole/l and additionally introduced di-(2-ethylhexyl) phosphoric acid in amount 0.3-0.6 mole/l. Into compound of organic phase of microemulsion i can be additionally introduced aliphatic alcohols in amount till 5% turns. EFFECT : ability of selective extraction of nonferrous and rare metals raw at leaching stage, without usage of concentrated acid and expensive organic solvent. 9 tbl, 7 ex