FIELD: chemistry.
SUBSTANCE: invention relates to chemical engineering and can be used for removal and recovery of silver from nitrate acid solutions. Method of extracting silver from process nitric acid solutions containing silver of 0.5-8 g/l and nitric acid of up to 2-10 g/l, is carried out on solid phase platinum catalyst. Extraction is carried out in presence of hydrazine nitrate reducing agent. Technical result is achieving degree of extracting silver of up to 99.99%.
EFFECT: improved efficiency of extracting silver.
1 cl, 1 tbl, 1 ex
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