EP 0992615 A1 20000412 - Startkathoden aus Kupferband für die Kupferelektrolyse und Verfahren zu deren Herstellung
Title (en)
Startkathoden aus Kupferband für die Kupferelektrolyse und Verfahren zu deren Herstellung
Title (de)
Copper cathode starting sheets for copper electrolysis and manufacture thereof
Title (fr)
Feuille de départ cathodique en cuivre pour l'électrolyse du cuivre et sa fabrication
Publication
Application
Priority
EP 98118542 A 19981001
Abstract (en)
Start cathode consists of rolled copper strip according to DIN 1708, 1737 and 17670 having a thickness of 0.3-1.2 mm which is soft annealed after rolling and has a strength of 210-240 N/mm<2>. The strip is cut into a length and width corresponding to the electrolysis bath. The cut sheet has a planar grease-free surface. Copper side strips having a thickness of 0.3-0.6 mm are fixed to the insert sides of the sheet. An Independent claim is also included for the production of start cathodes comprising: (a) forming a rolled, roll-hardened copper strip having a thickness of 0.3-1.2 mm of the copper sort according to DIN 1708, 1737 and 17670; (b) soft annealing the roll-hardened at furnace temperatures of 700-750o C and flow-through velocities of 20-70 m/min.; (c) degreasing the surfaces; (d) cutting the cooled copper strip to the required starting sheet diameters; (e) fixing side strips of thickness 0.3-0.6 mm from the copper strip and applying the contact rods; and (f) adjusting the start cathodes.
IPC 1-7
IPC 8 full level
C22F 1/00 (2006.01); C22F 1/02 (2006.01); C22F 1/08 (2006.01); C25C 1/12 (2006.01); C25C 7/02 (2006.01)
CPC (source: EP US)
C22F 1/08 (2013.01 - EP US); C25C 7/02 (2013.01 - EP US); Y10T 29/49991 (2015.01 - EP US)
Citation (search report)
- [DY] WO 9742360 A1 19971113 - ASARCO INC [US]
- [Y] EP 0417318 A1 19910320 - NIPPON STEEL CORP [JP]
- [A] GB 1294694 A 19721101 - BRITISH INSULATED CALLENDERS [GB]
Designated contracting state (EPC)
AT BE DE DK ES FI FR GR IT NL PT SE
DOCDB simple family (publication)
EP 0992615 A1 20000412; EP 0992615 B1 20010214; AR 021841 A1 20020807; AT E199172 T1 20010215; AU 6086699 A 20000426; AU 762788 B2 20030703; BR 9907135 A 20001003; BR 9907135 B1 20090811; CA 2312375 A1 20000413; CA 2312375 C 20080513; CN 1283844 C 20061108; CN 1287580 A 20010314; DE 19982000 D2 20020725; DE 59800478 D1 20010322; ES 2156425 T3 20010616; ID 24867 A 20000831; JP 2002526662 A 20020820; MX PA00004551 A 20020424; PE 20001209 A1 20001228; RU 2221088 C2 20040110; US 6350355 B1 20020226; WO 0020661 A1 20000413
DOCDB simple family (application)
EP 98118542 A 19981001; AR P990104924 A 19990929; AT 98118542 T 19981001; AU 6086699 A 19990923; BR 9907135 A 19990923; CA 2312375 A 19990923; CN 99801732 A 19990923; DE 19982000 T 19990923; DE 59800478 T 19981001; EP 9907070 W 19990923; ES 98118542 T 19981001; ID 20001008 A 19990923; JP 2000574752 A 19990923; MX PA00004551 A 19990923; PE 00099199 A 19990930; RU 2000117461 A 19990923; US 55553900 A 20000531