EP 0245588 B1 19900627 - PROCESS FOR THE FINE PURIFICATION OF FISSION MOLYBDENUM
Title (en)
PROCESS FOR THE FINE PURIFICATION OF FISSION MOLYBDENUM
Publication
Application
Priority
DE 3616391 A 19860515
Abstract (en)
1. Process for the fine purification of fission molybdenum, dissolved in anionic form together with anions of the fission products of I, Sn, Ce, Ru and Zr in aqueous, mineral acid solution, wherein a) the fission molybdenum is fixed on a metallic oxide in a sorption step and b) released again in a desorption step, characterised in that c) the aqueous solution is passed over an amphoteric oxide for the sorption of the anions of Mo, I, Ce, Ru, Sn and Zr ; d) the charged oxide is dried and then, for the sublimation of the Mo, is heated to a temperature in the range of between 1200 degrees C and 1300 degrees C and is simultaneously charged with a carrier gas stream containing water vapour ; e) by cooling-down to a temperature of less than 600 degrees C, the Mo is desublimated from the carrier gas stream and, after further cooling-down to ambient temperature, the resultant Mo residue is dissolved in an aqueous solution of a strong alkali and converted into a molybdate solution.
IPC 1-7
IPC 8 full level
G21G 4/08 (2006.01)
CPC (source: EP US)
G21G 4/08 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
EP 0245588 A2 19871119; EP 0245588 A3 19880706; EP 0245588 B1 19900627; DE 3616391 A1 19871119; DE 3763468 D1 19900802; US 4981658 A 19910101
DOCDB simple family (application)
EP 87102017 A 19870213; DE 3616391 A 19860515; DE 3763468 T 19870213; US 34918589 A 19890509