FIELD: metallurgy.
SUBSTANCE: invention refers to method of removing selenium, tellurium, copper and plumbum from silver-gold alloys. Method involves melting of initial molten metal, air blowdown of the obtained molten metal. At that, during melting of initial molten metal there added to the latter is middling product of refining production on the basis of silver oxide in quantity of 20 to 150% of mass of initial alloy. Then slag is removed from molten metal surface and molten metal is treated with carbon-bearing reducing agent to remove dissolved oxygen. After oxygen is removed, molten metal is poured into ingots, they are used as anodes at electrolytic production of affined silver.
EFFECT: increasing effectiveness of oxidising refining operation and reducing its duration.
1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PRODUCING REFINED SILVER FROM INTERMEDIATE PRODUCTS OF PRECIOUS METAL PRODUCTION CONTAINING SILVER IN THE FORM OF CHLORIDE | 2021 |
|
RU2779554C1 |
| PROCESSING OF GOLD-BEARING INORGANIC MATERIALS INCLUDING PROCESSING OF JEWELLERY SCRAP AND GOLD REFINING | 2013 |
|
RU2525959C1 |
| METHOD OF PROCESSING PRODUCTS CONTAINING CHALCOHENIDES OF NON-NOBLE METALS, LEAD, METALS OF PLATINUM GROUP, GOLD AND SILVER | 2005 |
|
RU2291212C1 |
| TREATMENT METHOD OF ZINC-BEARING GOLDEN-SILVER CYANIC SEDIMENTS | 2007 |
|
RU2351667C1 |
| METHOD OF RECOVERY OF NOBLE METALS FROM PRODUCTS CONTAINING SILVER CHLORIDE, METALS OF PLATINUM GROUP AND GOLD | 1999 |
|
RU2164255C2 |
| METHOD OF PRODUCTS REPROCESSING, CONTAINING CHALCOGENIDES OF BASE METALS, LEAD, PLATINUM METALS, GOLD AND SILVER | 2007 |
|
RU2355792C2 |
| PROCEDURE FOR PRODUCTION OF REFINED SILVER | 2010 |
|
RU2421529C1 |
| METHOD FOR PROCESSING PRODUCTS CONTAINING NON-NOBLE METAL CHALCOGENIDES, PLATINUM GROUP METALS AND GOLD | 2003 |
|
RU2260629C2 |
| METHOD OF PROCESSING CONCENTRATE OF REFINERIES DUST | 2008 |
|
RU2370555C1 |
| METHOD FOR PRODUCING SILVER AND PLATINUM GROUP METALS | 2018 |
|
RU2680552C1 |
