FIELD: chemistry.
SUBSTANCE: method includes contacting the cyanide solutions with a precipitating component, which is zinc or aluminium powders applied to the filter paper. The paper with the deposited component is rolled up, placed in a precipitating column and the starting solution is passed through a roll system.
EFFECT: extraction of precious metals from cyanide solutions and increase of the content of precious metals in the product by using available reagents and materials.
2 cl, 1 tbl
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