Title:
金属粉の生成方法
Document Type and Number:
Japanese Patent JP5231415
Kind Code:
B2
Abstract:
The invention relates to a method for leaching a material containing a valuable metal and precipitating the valuable metal as a fine-grained powder by changing the electrochemical potential of an intermediary metal in the solution. In the leaching stage the intermediary metal or substance of the electrolyte solution is at a high degree of oxidation and in the precipitation stage another electrolyte solution is routed into the solution, in which the intermediary metal or substance is at a low degree of oxidation. After the precipitation stage the solution containing the intermediary is routed to electrolytic regeneration, in which part of the intermediary is oxidised in the anode space back to a high potential value and part is reduced in the cathode space to its low value.
Inventors:
Heymara, Seppo
Luonara, Mikko
Luonara, Mikko
Application Number:
JP2009523310A
Publication Date:
July 10, 2013
Filing Date:
August 09, 2007
Export Citation:
Assignee:
OUTOTEC OYJ
International Classes:
C22B3/44; B22F9/24; C22B3/04; C22B7/00; C22B9/02; C22B15/00; C22B23/06; C22B25/06
Domestic Patent References:
| JP2004018923A | ||||
| JP2005042135A | ||||
| JP2002327289A |
Attorney, Agent or Firm:
Takao Katori