FIELD: precious metallurgy, in particular, methods for extraction and concentration of precious metals used on processing of weak process solutions and pulps containing gold, silver and platinum-group metals.
SUBSTANCE: method involves providing contacting of solutions containing small amounts of precious metals with sorbent preliminarily treated with solution of derivatives of dithiocarbonic acid O-ethers. Insoluble porous substances such as activated coal, lignin, synthetic sorbent, etc may be used as basic sorbents. Acidity value of solution used in treatment process may range from 2 to 11, preferably from 5 to 8. Sorbent is preliminarily treated at room temperature for 2-24 hours.
EFFECT: increased efficiency of sorbent, increased extent of extraction and rate of process for extraction of metals from solutions.
3 cl, 6 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF EXTRACTING NOBLE METALS FROM CYANIDE SOLUTIONS AND PULPS CONTAINING NONFERROUS METALS | 1992 |
|
RU2023733C1 |
| EXTRACTION METHOD OF PRECIOUS METALS FROM SOLUTIONS | 2012 |
|
RU2505614C1 |
| METHOD OF NOBLE METALS EXTRACTION | 1992 |
|
RU2006506C1 |
| PROCEDURE FOR SORPTION EXTRACTION OF VALUABLE METALS | 2009 |
|
RU2394109C1 |
| METHOD OF PRODUCING MODIFIED GRANULATED CARBON ACTIVE SORBENT OF NOBLE METALS | 2010 |
|
RU2447934C1 |
| METHOD FOR PROCESSING OF BISMUTH-CONTAINING CONCENTRATES | 1993 |
|
RU2062803C1 |
| METHOD FOR HYDROMETALLURGICAL PROCESSING OF BACTERIAL OXIDATION CAKE | 2023 |
|
RU2806351C1 |
| GOLD- AND SILVER-CONTAINING FLOATATION CONCENTRATES PRODUCTION LINE | 2002 |
|
RU2224806C1 |
| EXTRACTION METHOD OF METALS FROM METAL-CONTAINING MINERAL RAW MATERIAL | 2010 |
|
RU2476610C2 |
| METHOD OF EXTRACTING NOBLE METALS FROM AQUEOUS SOLUTIONS AND DEVICE FOR REALISING SAID METHOD | 2008 |
|
RU2404927C2 |
