FIELD: extraction of nonferrous and noble metals from secondary raw materials, more particularly electronic scrap metal. SUBSTANCE: in order to simplify production process and increase degree of recovery of nonferrous and noble metals from secondary raw materials, recovery of nonferrous metals is carried out by treating secondary raw materials with mixture of sulfuric and nitric acids and to recover noble metals (gold), organic collector, such as cellulose nitrate varnish, is added to leaching solution. Said varnish absorbs gold into gel-like product and separates it from leaching pulps. EFFECT: more efficient recovery method. 2 tbl
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Authors
Dates
2001-11-10—Published
1999-12-01—Filed