Title:
RECOVERY OF URANIUM-CONTAINING CONDENSATE AND PHOSPHORIC ACID AND URANIUM-CONTAINING CONDENSATE AND PHOSPHORIC ACID RECOVERED THEREBY
Document Type and Number:
Japanese Patent JPS57118032
Kind Code:
A
Abstract:
A uranium containing concentrate and phosphoric acid are obtained by digesting phosphate rock with H2SO4 and treating the H3PO4-solution - remaining after removal of calciumsulphate -, if so desired after evaporation, with a reducing agent, an organic dispersant and an inorganic F-compound, whereafter the resulting uraniumcontaining precipitate is separated off and phosphoric acid is recovered from the remaining mixture. As inorganic F-compound use is made of NH2F, which is prepared in situ by absorbing in water the gases escaping during the digestion and the optional evaporation, converting the H2SiF6-solution formed with NH3 to and SiO2-containing NH4F solution, separing off the SiO2 and applying the resulting NH4F-solution, for the uranium precipitation.
Inventors:
KOONERISU ANTONIUMU MARIA UETA
YOHANNESU ANNA YANSEN
YOHANNESU ANNA YANSEN
Application Number:
JP19433081A
Publication Date:
July 22, 1982
Filing Date:
December 02, 1981
Export Citation:
Assignee:
STAMICARBON
International Classes:
C01G43/00; C01B25/222; C01B25/238; C01B25/46; C22B60/02; (IPC1-7): C01B25/222; C01B25/234; C01G43/00