EP 1666615 A1 20060607 - METHOD AND APPARATUS FOR PRODUCING METAL
Title (en)
METHOD AND APPARATUS FOR PRODUCING METAL
Title (de)
VERFAHREN UND VORRICHTUNG ZUR PRODUKTION VON METALL
Title (fr)
PROCEDE ET APPAREIL DE PRODUCTION DE METAL
Publication
Application
Priority
- JP 2004010024 W 20040714
- JP 2003304176 A 20030828
Abstract (en)
The present invention relates to a method for producing a metal by a direct oxide reduction process with Ca. A CaCl 2 -based molten salt containing Ca is held in a reduction chamber 1, a metal oxide is introduced into the molten salt in the reduction chamber 1, and the metal oxide is reduced with the Ca in the molten salt to form said metal. The metal formed in the molten salt is separated from the molten salt in a separation means 2, and the molten salt deprived of the metal is introduced into a chlorination chamber 7 and subjected to chlorination treatment with chlorine gas to eliminate the byproduct CaO in the molten salt. The molten salt after chlorination treatment is introduced into an electrolysis chamber 8 and electrolyzed for the formation of Ca and chlorine from CaCl 2 , and the thus-formed Ca or Ca-containing molten salt is transferred from the electrolysis chamber 8 to the reduction chamber 1. The chlorine obtained in the electrolysis chamber 8 is used in the chlorination chamber 7. Thus, the present invention provides a metal production method and an apparatus wherein high levels of productivity are obtained and the product metal can be inhibited from carbon contamination due to CaO, without any generation of CO 2 from the production process, while their being based on the direct oxide reduction process comprising the step of reducing a metal oxide with Ca.
IPC 1-7
C22B 34/12; C22B 5/02; C22B 34/14; C22B 34/22; C22B 34/32; C22B 34/36; C22B 59/00; C25C 3/02
IPC 8 full level
C22B 5/04 (2006.01); C22B 9/10 (2006.01); C22B 34/12 (2006.01); C25C 3/02 (2006.01); C25C 7/00 (2006.01)
CPC (source: EP US)
C22B 5/04 (2013.01 - EP US); C22B 34/1268 (2013.01 - EP US); C22B 34/129 (2013.01 - EP US); C25B 1/26 (2013.01 - EP US); C25C 3/02 (2013.01 - EP US)
Citation (search report)
See references of WO 2005021809A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1666615 A1 20060607; JP 2005068539 A 20050317; JP 4193984 B2 20081210; US 2006219053 A1 20061005; WO 2005021809 A1 20050310
DOCDB simple family (application)
EP 04747490 A 20040714; JP 2003304176 A 20030828; JP 2004010024 W 20040714; US 56960206 A 20060224