EP 0170372 B1 19880817 - METALLOTHERMIC REDUCTION OF RARE EARTH OXIDES WITH CALCIUM METAL
Title (en)
METALLOTHERMIC REDUCTION OF RARE EARTH OXIDES WITH CALCIUM METAL
Publication
Application
Priority
US 62773684 A 19840703
Abstract (en)
[origin: EP0170372A1] Rare earth oxides can be reduced to rare earth metals by, a novel, high yield, metallothermic process. The oxides are dispersed in a suitable, molten, calcium chloride-based bath (44) along with calcium metal. The bath (44) is agitated and calcium metal reduces the rare earth oxides to rare earth metals. The metals collect in a discrete layer (43) in the reaction vessel (22).
IPC 1-7
IPC 8 full level
C22B 26/20 (2006.01); C22B 5/04 (2006.01); C22B 59/00 (2006.01)
CPC (source: EP KR)
C22B 5/00 (2013.01 - KR); C22B 5/04 (2013.01 - EP); C22B 59/00 (2013.01 - EP)
Designated contracting state (EPC)
AT DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0170372 A1 19860205; EP 0170372 B1 19880817; AT E36560 T1 19880915; AU 4448885 A 19860109; AU 575965 B2 19880811; BR 8503140 A 19860318; DE 3564451 D1 19880922; ES 544799 A0 19870101; ES 8702508 A1 19870101; JP S6130639 A 19860212; JP S6137341 B2 19860823; KR 860001203 A 19860224; KR 910001581 B1 19910316; MX 173880 B 19940407; ZA 854474 B 19860326
DOCDB simple family (application)
EP 85304046 A 19850607; AT 85304046 T 19850607; AU 4448885 A 19850702; BR 8503140 A 19850628; DE 3564451 T 19850607; ES 544799 A 19850702; JP 14645085 A 19850703; KR 850004710 A 19850701; MX 2661685 A 19850628; ZA 854474 A 19850613