FIELD: chemical technology; methods of separation and concentration.
SUBSTANCE: proposed method includes joint extraction of gold (III) and silver (I) from thiocyanate solutions followed by complete selective separation. Proposed method includes extraction of gold and silver from solution by sorption on anionite followed by separation through stepped desorption in thiocarbamide solution in sulfuric acid. Sorption of gold (III) and silver (I) is performed from thiocyanate solutions on anionite AH-25; subsequent separation by stepped desorption is carried out in thiocarbamide solution in 0.3-0.5 M H2SO4 at concentration of thiocarbamide from 30 to 50 mg/l for silver and 80 to 100 mg/l for gold.
EFFECT: acceleration of method.
1 dwg, 2 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR SELECTIVE EXTRACTION OF GOLD FROM AQUEOUS THIOCYANATE SOLUTIONS | 2008 |
|
RU2363746C1 |
| METHOD OF SEPARATING PLATINUM (II, IV) AND PALLADIUM (II) FROM SILVER (I), IRON (III) AND COPPER (II) IN HYDROCHLORIC ACID SOLUTIONS | 2019 |
|
RU2694855C1 |
| METHOD OF SEPARATING PLATINUM (II, IV) AND RHODIUM (III) IN AQUEOUS CHLORIDE SOLUTIONS | 2010 |
|
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| SEPARATE GOLD AND SILVER EXTRACTION METHOD FROM THIOCYANATE SOLUTIONS | 2008 |
|
RU2385958C1 |
| METHOD OF RECOVERY OF GOLD AND/OR SILVER FROM CYANIDE SOLUTIONS AND PULPS | 1999 |
|
RU2148666C1 |
| INDICATOR COMPOSITION FOR DETERMINING SILVER(I) IN AQUEOUS SOLUTIONS | 2005 |
|
RU2291421C1 |
| EXTRACTION METHOD OF GOLD FROM ORES AND PRODUCTS OF THEIR PROCESSING | 2012 |
|
RU2490344C1 |
| METHOD FOR EXTRACTION AND SEPARATION OF PLATINUM AND RHODIUM IN SULPHATE SOLUTIONS | 2012 |
|
RU2479651C1 |
| INDICATOR COMPOSITION FOR DETERMINING GOLD(III) IN AQUEOUS SOLUTIONS | 2006 |
|
RU2308718C1 |
| METHOD FOR SEPARATNG PLATINUM (II, IV) AND IRON (III) IN HYDROCHLORIC ACID SOLUTIONS | 2015 |
|
RU2610185C2 |
