Ifp Energies Nouvelles

Eramet

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Areva Nc

Areva Mines

Fabien Burdet

Malika Boualleg

Stéphane Pellet-Rostaing

Gilles Bernier

Marc Lemaire

Manuel Miguirditchian

Guilhem Arrachart

Xavier Heres

Yohan Florent Oudart

Antoine Leydier

Marinella Mazzanti

Alain Favre-Reguillon

Marie-Thérèse Duchesne

Raphael Turgis

Elisabeth Zekri

Julien Borrini

Nicolas Aychet

Gabriel Plancque

Morgan Gohin

Stephane Pellet-Rostaing

The present invention relates to the field of solid materials for the adsorption of lithium. In particular, the present invention relates to a novel process for preparing a solid crystalline material formed preferably in extrudate form, of formula (LiCl).2Al(OH),nHO with n being between 0.01 and 10, x being between 0.4 and 1, comprising a step a) to precipitate boehmite under specific conditions of temperature and pH, a step to place the precipitate obtained in contact with a specific quantity of LiCl, at least one forming step preferably via extrusion, said process also comprising a final hydrothermal treatment step, all allowing an increase in lithium adsorption capacity and in the adsorption kinetics of the materials obtained compared to prior art materials, when used in a process to extract lithium from saline solutions.

Process for preparing an adsorbent material and process for extracting lithium using said material

The present invention relates to the field of solid materials for adsorption of lithium. In particular, the present invention relates to a novel method for preparing a crystallized and shaped solid material, preferably as extrudates, of formula LiX.2Al(OH), nHO with n being comprised between 0.01 and 10, x being equal to 1 when X is an anion selected from among chloride, hydroxide and nitrate anions, and x being equal to 0.5 when X is an anion selected from among sulfate and carbonate anions, comprising a step a) for precipitation of boehmite under specific temperature and pH conditions, at least one shaping step, preferably by extrusion, said method also comprising a final hydrothermal treatment step, the whole giving the possibility of increasing the adsorption capacity for lithium as well as the adsorption kinetics of the materials obtained as compared with the materials of the prior art when the latter is used in a method for extracting the lithium from saline solutions.

Process for preparing an adsorbing material comprising a precipitating step of boehmite according to specific conditions and process for extracting lithium from saline solutions using this material

New compounds which meet general formula (I): where:

Bifunctional compounds useful as ligands of uranium (VI), methods of synthesising same and uses thereof

A process which allows separation of americium present in an acid aqueous phase or in an organic phase from the other metal elements also found in this phase, by complexation of the americium with a water-soluble ethylenediamine derivative; and a process for selective recovery of americium from an acid aqueous phase containing, in addition to americium, other metal elements, which comprises the application of this separation process.

Process for separating americium from other metallic elements present in an acidic aqueous or organic phase

Growing community of inventors

Plaisir, France

Fabien Burdet