Published February 27, 1985 | Version v1
Patent Metadata-only

Extraction of metal ions

Creators

Description

A method for extracting metal ions having a high charge and a small ionic radius and in the tetravalent state, from acid liquors involves the step of contacting the liquor with a chelating aminophosphonic acid ion exchange resin, known per se. The method is particularly effective for extracting thorium and other radionuclides from nitric acid raffinates arising during the production of pure uranium for nuclear fuel from uranium ore concentrates. The method can also be applied to the removal of parts per million amounts of actinides such as plutonium, neptunium, protactinium and uranium from acid liquors destined for disposal or storage. (author)

Availability note (English)

Available from the Patent Office, 25 Southampton Buildings, London WC2A 1AY.

Additional details

Publishing Information

Imprint Pagination
3 p.
IPC:
Int. Cl. G21f9/12; B01d15/00; C01f15/00; C01g43/00; C01g56/00.
IPC
Int. Cl. G21f9/12; B01d15/00; C01f15/00; C01g43/00; C01g56/00.
Patent number
GB patent document 2144111/A/

INIS

Country of Publication
United Kingdom
Country of Input or Organization
United Kingdom
INIS RN
16072389
Subject category
S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
AMINES; AQUEOUS SOLUTIONS; CHELATING AGENTS; IMPURITIES; ION EXCHANGE; IONS; NEPTUNIUM; NITRIC ACID; ORGANIC ION EXCHANGERS; PHOSPHONIC ACID ESTERS; PLUTONIUM; PROTACTINIUM; RADIOACTIVE WASTE PROCESSING; RESINS; THORIUM; TRACE AMOUNTS; URANIUM
Descriptors DEC
ACTINIDES; CHARGED PARTICLES; DISPERSIONS; ELEMENTS; ESTERS; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; INORGANIC ACIDS; ION EXCHANGE MATERIALS; MANAGEMENT; MATERIALS; METALS; MIXTURES; NITROGEN COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; ORGANIC POLYMERS; OXYGEN COMPOUNDS; POLYMERS; SOLUTIONS; TRANSURANIUM ELEMENTS; WASTE MANAGEMENT; WASTE PROCESSING

Optional Information

Secondary number(s)
GB priority 8319838.