Document Type and Number:
Japanese Patent JPH0249255
Kind Code:
B2
Abstract:
An improvement in effecting uranium recovery from phosphoric acid solutions is provided by sparging dissolved oxygen contained in solutions and solvents used in a reductive stripping stage with an effective volume of a nonoxidizing gas before the introduction of the solutions and solvents into the stage. Effective volumes of nonoxidizing gases, selected from the group consisting of argon, carbon dioxide, carbon monoxide, helium, hydrogen, nitrogen, sulfur dioxide, and mixtures thereof, displace oxygen from the solutions and solvents thereby reduce deleterious effects of oxygen such as excessive consumption of elemental or ferrous and accumulation of complex iron phosphates or cruds.
Inventors:
FURETSUDO JEI HAASUTO
GIRUBAATO EMU BURAUN
FURANTSU EI HOJII
GIRUBAATO EMU BURAUN
FURANTSU EI HOJII
Application Number:
JP19393482A
Publication Date:
October 29, 1990
Filing Date:
November 04, 1982
Export Citation:
Assignee:
US ENERGY
International Classes:
C01G43/00; C22B60/02
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