FIELD: metallurgy.
SUBSTANCE: method for extracting platinum from electronic scrap wastes involves scrap crushing and melting in furnace using a molten header. As header there used is metal bismuth with addition of 0.5-1.0 wt % of indium, which is mixed with electronic scrap wastes in ratio of (2.0-2.5):1 as to weight at temperature of 800°C. Then, exposure is performed during 30-45 minutes. After the exposure the temperature in the furnace is increased up to 900-1000°C and the obtained molten bismuth - platinum alloy is oxidised by air blowing so that bismuth is changed over to oxide, and platinum - to globule enriched with platinum.
EFFECT: simpler and cheaper method for extracting platinum from electronic scrap wastes.
1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| PROCEDURE FOR EXTRACTION OF GOLD FROM REJECTS OF ELECTRONIC SCRAP | 2010 |
|
RU2432408C1 |
| METHOD OF EXTRACTING PALLADIUM FROM WASTES OF ELECTRON RAW MATERIAL | 2009 |
|
RU2398900C1 |
| METHOD OF PLATINUM-GROUP METALS EXTRACTION FROM SPENT CATALYSTS ON CARRIERS OUT OF ALUMINIUM OXIDE | 2013 |
|
RU2564187C2 |
| PROCESSING OF GOLD-BEARING INORGANIC MATERIALS INCLUDING PROCESSING OF JEWELLERY SCRAP AND GOLD REFINING | 2013 |
|
RU2525959C1 |
| ELECTRONIC WASTE PROCESSING METHOD | 2013 |
|
RU2521766C1 |
| METHOD FOR RADIOELECTRONIC PRODUCTS SCRAP PROCESSING WITH HIGH PURITY PRECIOUS METALS EXTRACTION | 2016 |
|
RU2618588C1 |
| CHARGE AND METHOD OF EXTRACTING NOBLE METALS OUT OF IT | 2008 |
|
RU2383637C1 |
| CHARGE FOR PRODUCING PLATINUM GROUP METALS | 1996 |
|
RU2116365C1 |
| METHOD FOR PROCESSING PRODUCTS CONTAINED RUTHENIUM AND IRIDIUM | 1996 |
|
RU2104320C1 |
| METHOD OF RECOVERING PRECIOUS METALS FROM SILVER-CONTAINING CONCENTRATES | 1997 |
|
RU2114203C1 |
