Commissariat a L'energie Atomique

Centre Technique Cuir Chaussure Maroquinerie

Maurice Carles

Christian Perre

Roger Neige

Louis Bethuel

Jacques Aubert

Colette Bardot

Paul Vignet

Bernard Vulliermet

Gerard Gavend

Stephane Sarrade

Luc Shrive

Rene Desplantes

Process and installation for the separation of heavy and light compounds

Process for the treatment of skins, hides or shett materials containing

Reverse osmosis or nanofiltration membrane and its production process

Apparatus for the extraction of constituents by a supercritical fluid or

A process for the purification of uranium hexafluoride containing traces of neptunium fluoride and/or plutonium fluoride, wherein the uranium hexafluoride to be purified is contacted with a metal fluoride chosen from the group including lead fluoride PbF.sub.2, uranium fluorides of UF.sub.4+x in which x has a value between 0 and 1 and chromium trifluoride CrF.sub.3, at a temperature such that the plutonium and/or neptunium fluorides are reduced, and wherein the thus purified uranium hexafluoride is recovered.

Uranium hexafluoride purification process

A chemical process of isotopic enrichment of uranium makes use of isotopic exchange between an aqueous phase loaded with uranium III and another phase charged with uranium IV. Reduction and oxidation of uranium in aqueous phase are carried out using the same electrolyzer. Reduction may be by zinc amalgam which is later electrolytically reduced.

Uranium isotopic enrichment

Growing community of inventors

Pierrelatte, France

Maurice Carles