Title:
RECOVERY OF URANIUM FROM WET PHOSPHORIC ACID
Document Type and Number:
Japanese Patent JPS56104717
Kind Code:
A
Abstract:
Wet process phosphoric acid is oxidized with nitric acid so that uranium values therein are in the +6 state. The organic extractant which contacts the acid extracts the +6 uranium and nitrate and/or nitrite ions. Urea is added to the oxidized acid to react with the nitrate and/or nitrite ions so that the organic does not extract them. The organic is reductively stripped with an aqueous solution containing ferrous ions. The efficacy of the ferrous ions is not lost through reaction with nitrate and/or nitrite ions.
Inventors:
REJISU RICHIYAADO SUTANA
EDOWAADO MITSUTOERU
JIYOZEFU SUCHIIBUN RUDORUFU
JIYOZE GUREGORIO ROPESU
EDOWAADO MITSUTOERU
JIYOZEFU SUCHIIBUN RUDORUFU
JIYOZE GUREGORIO ROPESU
Application Number:
JP653081A
Publication Date:
August 20, 1981
Filing Date:
January 21, 1981
Export Citation:
Assignee:
WYOMING MINERAL CORP
International Classes:
C01G43/00; B01D11/02; C01B25/238; C22B60/02; (IPC1-7): C01B25/234; C01G43/00
Domestic Patent References:
| JPS5626707A | 1981-03-14 |
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