Title:
貴金属を回収するためのプラズマ法および装置
Document Type and Number:
Japanese Patent JP2012509987
Kind Code:
A
Abstract:
The present invention relates to a method, and apparatus for the recovery of precious metals. Accordingly, it provides a continuous process for obtaining a precious metal composition from a feedstock material, the process comprising the steps of: (i) heating a feedstock material in a plasma furnace to form an upper slag layer and a lower molten metal layer; (ii) removing the slag layer; (iii) removing the molten metal layer; (iv) allowing the removed molten metal layer to solidify; (v) fragmenting the solidified metal layer to form fragments; and (vi) recovering a precious metal composition from the fragments; wherein the feedstock material comprises a precious metal containing material and a collector metal, said collector metal being a metal or an alloy that is capable of forming a solid solution, an alloy or an intermetallic compound with one or more precious metals. This allows for high recovery yields of precious metals. The apparatus comprises a plasma furnace, a casting table enabling continuous casting of the molten metal pool to form a solidified sheet, a fragmentation device and a separation unit for recovering precious-metal-rich alloy from the sheet fragments.
Inventors:
Vegan david
Johnson Tim
Johnson Tim
Application Number:
JP2011536947A
Publication Date:
April 26, 2012
Filing Date:
November 24, 2009
Export Citation:
Assignee:
Tetronics Limited
International Classes:
C22B11/02; B03C1/00; B03C1/16; B03C1/23; B09B3/00; B09B5/00; C22B7/00; C22B9/10; F27D11/08
Domestic Patent References:
| JPS57108226A | 1982-07-06 | |||
| JPS57110633A | 1982-07-09 | |||
| JP2006274433A | 2006-10-12 | |||
| JPS6184336A | 1986-04-28 | |||
| JP2002263606A | 2002-09-17 | |||
| JPH09227962A | 1997-09-02 | |||
| JPS57108226A | 1982-07-06 | |||
| JPS57110633A | 1982-07-09 | |||
| JP2006274433A | 2006-10-12 |
Attorney, Agent or Firm:
Kazuko Fujita