US 7,601,247 B2
Falling bed cathode cell for metal electrowinning
Douglas J. Robinson, Sun Lakes, Ariz. (US); Stacey A. MacDonald, Phoenix, Ariz. (US); Davide Scotti, Cinisello Balsamo (Italy); and Francesco Todaro, Milan (Italy)
Assigned to De Nora Elettrodi S.p.A., Milan (Italy)
Appl. No. 10/561,560
PCT Filed Jun. 23, 2004, PCT No. PCT/EP2004/006790
§ 371(c)(1), (2), (4) Date Feb. 03, 2006,
PCT Pub. No. WO2005/001165, PCT Pub. Date Jan. 06, 2005.
Claims priority of application No. MI2003A1270 (IT), filed on Jun. 24, 2003.
Prior Publication US 2007/0102302 A1, May 10, 2007
Int. Cl. C25C 7/02 (2006.01); C25C 7/00 (2006.01); C25C 1/12 (2006.01); C25C 1/08 (2006.01); C25C 1/14 (2006.01); C25C 1/16 (2006.01); C25C 1/10 (2006.01)
U.S. Cl. 204—237  [204/263; 205/348; 205/572; 205/574; 205/594; 205/587; 205/573; 205/602; 205/610] 15 Claims
OG exemplary drawing
 
1. A cell for metal electrowinning from metal ion solutions comprising a cathodic compartment containing a cathodic falling bed of growing metallic beads separated from the corresponding anodic compartment by an electrically insulating diaphragm, and a generally vertical external duct crossed by an upward stream of said metallic beads and of electrolyte directed to feed said falling bed.