C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
23/180, 53/219
C22B 60/02 (2006.01) C01B 7/19 (2006.01) C01G 43/00 (2006.01) C01G 43/06 (2006.01) C22B 3/44 (2006.01)
Patent
CA 1329991
ABSTRACT OF THE DISCLOSURE A process for separately recovering uranium and hydrofluoric acid from a waste liquor containing uranium and fluorine comprises a neutralizing precipitation step wherein a magnesium compound is added to the waste liquor containing uranium and fluorine to form a precipitate and the thus formed precipitate is then separated; a distillation step wherein an aqueous solution of sulfuric acid is added to the precipitate separated in said neutralizing precipitation step to dissolve the precipitate and the thus formed solution is then distilled to recover hydrofluric acid as a distillate; and a uranium recovery step wherein uranium is recovered from a residue produced by said distillation step.
533804
Amimoto Hirotaka
Echigo Yoshiaki
Fujisaki Sakae
Ishikura Tadashi
Ogura Yoshikazu
Japan Nuclear Cycle Development Institute
Marks & Clerk
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