Published January 19, 1982 | Version v1
Patent Metadata-only

Maintaining reductive strip efficiency in uranium recovery processes

Creators

Description

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

Availability note (English)

U.S. Commissioner of Patents, Washington, D.C. 20231, USA, $.50.

Additional details

Additional titles

Augmented title (English)
Patent

Publishing Information

Imprint Pagination
v p.
IPC:
Int. Cl.B01D 11/04.
IPC
Int. Cl.B01D 11/04.
Patent number
US patent document 4,311,675/A/

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
13683327
Subject category
S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
IRON COMPOUNDS; OXIDATION; PHOSPHATES; PHOSPHORIC ACID; REDUCTION; SEPARATION PROCESSES; URANIUM; UREA
Descriptors DEC
ACTINIDES; CARBONIC ACID DERIVATIVES; CHEMICAL REACTIONS; ELEMENTS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; METALS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; PHOSPHORUS COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
PAT-APPL-114466.