EP 1835049 A4 20090325 - METHOD FOR PRODUCING METAL
Title (en)
METHOD FOR PRODUCING METAL
Title (de)
VERFAHREN ZUR HERSTELLUNG VON METALL
Title (fr)
PROCÉDÉ SERVANT À PRODUIRE UN MÉTAL
Publication
Application
Priority
- JP 2005022651 W 20051209
- JP 2004363708 A 20041215
Abstract (en)
[origin: EP1835049A1] A method for producing a metal by an electrolytic process using an yttria-containing porous ceramic body as a diaphragm is provided; the calcium formed by electrolysis cannot pass through the diaphragm, hence the back reaction can be effectively inhibited. Preferably, to be used is a diaphragm comprising a porous ceramic body having a purity of yttrium of 90 mass % or more (more preferably, 99% or more), a porosity of 1% or more and a pore diameter of 20 µm or less, and having a thickness of 0.05-50 mm and a metal halide is used as the electrolytic bath. The method can be utilized for producing metals such as calcium or rare earth elements, in particular. For example, when the method is applied to the production of calcium, metallic calcium can be produced with ease and at low cost without the need for enormous heat energy
IPC 8 full level
CPC (source: EP US)
C25B 1/26 (2013.01 - EP US); C25C 3/02 (2013.01 - EP US); C25C 3/34 (2013.01 - EP US); C25C 5/04 (2013.01 - EP US); C25C 7/04 (2013.01 - EP US)
Citation (search report)
- [X] WO 2004035873 A1 20040429 - BHP BILLITON INNOVATION PTY [AU], et al
- [A] US 6187168 B1 20010213 - LACAMERA ALFRED F [US], et al
- See references of WO 2006064730A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1835049 A1 20070919; EP 1835049 A4 20090325; AU 2005315000 A1 20060622; AU 2005315000 B2 20090507; CA 2590698 A1 20060622; JP 2006169583 A 20060629; JP 4252531 B2 20090408; NO 20073044 L 20070914; RU 2007126847 A 20090127; US 2008110765 A1 20080515; WO 2006064730 A1 20060622
DOCDB simple family (application)
EP 05814353 A 20051209; AU 2005315000 A 20051209; CA 2590698 A 20051209; JP 2004363708 A 20041215; JP 2005022651 W 20051209; NO 20073044 A 20070615; RU 2007126847 A 20051209; US 79295405 A 20051209