FIELD: process engineering.
SUBSTANCE: invention relates to extraction of precious metals. Continuous extraction of precious metal composition from raw stock comprises heating of said stock in plasma kiln to produce slag top layer and fused metal bottom layer. Then, slag layer and fused metal layer are removed. Fused metal removed layer is solidified and fragmented for extraction of precious metals from produced fragments. Note here that said raw stock comprises material containing precious metal and collector metal. The latter is either metal or alloy able to form solid solution, alloy or intermetallide compound with one or several precious metals. Proposed device comprises plasma kiln, teeming table for continuous teeming of fused metal pool to form solidified sheet, fragmentation device and separation unit for extraction of precious metals from sheet fragment alloys.
EFFECT: higher yield.
20 cl, 11 dwg, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| PLASMA METHOD AND DEVICE FOR RECOVERY PRECIOUS METALS | 2014 |
|
RU2639405C2 |
| PRECIOUS METAL RECOVERY | 2014 |
|
RU2677904C2 |
| METHOD OF PLATINUM-GROUP METALS EXTRACTION FROM SPENT CATALYSTS ON CARRIERS OUT OF ALUMINIUM OXIDE | 2013 |
|
RU2564187C2 |
| METHOD OF EXTRACTING RHENIUM AND PLATINUM METALS FROM SPENT CATALYSTS ON ALUMINIUM OXIDE SUPPORTS | 2013 |
|
RU2525022C1 |
| METHOD FOR EXTRACTING PLATINUM FROM ELECTRONIC SCRAP WASTES | 2011 |
|
RU2458998C1 |
| PROCEDURE FOR EXTRACTION OF GOLD FROM REJECTS OF ELECTRONIC SCRAP | 2010 |
|
RU2432408C1 |
| METHOD FOR SELECTING SLAG COMPOSITION FOR EXTRACTION OF PLATINUM GROUP METALS FROM SPENT CATALYST USING IRON AS A COLLECTOR | 2021 |
|
RU2770393C1 |
| METHOD OF EXTRACTING PALLADIUM FROM WASTES OF ELECTRON RAW MATERIAL | 2009 |
|
RU2398900C1 |
| METHOD OF SEPARATING MULTICOMPONENT MATERIAL CONTAINING METALLIC COMPONENTS | 2004 |
|
RU2248406C1 |
| PLASMA TORCH, EXTRACTION METHOD OF PURE METAL FROM METAL-BEARING MATERIAL AND METHOD OF ABATEMENT OF ORGANIC MATTER | 2005 |
|
RU2377744C2 |
