EP 1160358 A1 20011205 - Electrolytic refining method of copper and electrolytic copper
Title (en)
Electrolytic refining method of copper and electrolytic copper
Title (de)
Elektrolytisches Kupferraffinationsverfahren und elektrolytisches Kupfer
Title (fr)
Procédé de raffinage électrolytique de cuivre et cuivre électrolytique
Publication
Application
Priority
- JP 2000158020 A 20000529
- JP 2000219753 A 20000719
- JP 2000328922 A 20001027
- JP 2001105514 A 20010404
Abstract (en)
In an electrolytic refining method of copper, (1) electrolysis is operated by controlling the cathode potential at current density Dk of 330 A/m<2> or higher, and/or (2) electrolysis is operated by using an anion surfactant together with glue and thiourea as additives, and/or (3) PR electrolysis is operated by adding an anion surfactant to the electrolyte solution by 0.001 g /t or more, and feeding inverting or reversing current continuously for 45 to 300 seconds, at 1/500 to 1/25 of continuous feeding time of positive current.
IPC 1-7
IPC 8 full level
C25C 1/12 (2006.01)
CPC (source: EP)
C25C 1/12 (2013.01)
Citation (search report)
- [XA] US 4140596 A 19790220 - WOBKING HANS
- [X] US 3389064 A 19680618 - HENRY SCHLOEN JOHN, et al
- [A] DATABASE WPI Section Ch Week 198547, Derwent World Patents Index; Class A97, AN 1985-294544, XP002176875
Designated contracting state (EPC)
BE DE ES
DOCDB simple family (publication)
DOCDB simple family (application)
EP 01113003 A 20010528