FIELD: metallurgy.
SUBSTANCE: method to process an alloy of ligature gold, containing not more than 13% of silver and at least 85% of gold, includes electrolysis with soluble anodes from initial alloy with usage of hydrochloric acid solution of aurichlorohydric acid (HAuCl4) with excessive acidity by HCl 70-150 g/l as electrolyte. Electrolysis is carried out with deposition of pure gold on cathodes. At the same time into the initial electrolyte prior to start of the electrolysis process they introduce nitric acid to its concentration in electrolyte 70÷100 g/l. Then nitric acid is added in process of electrolysis into electrolyte in a dosing manner.
EFFECT: performance of gold refining per one stage with production of target product with high content of gold with reduced duration of process and lower energy and labour inputs.
3 cl
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