PROCESS FOR PREPARING AN ADSORBENT MATERIAL IN THE ABSENCE OF BINDER COMPRISING A HYDROTHERMAL TREATMENT STEP AND PROCESS FOR EXTRACTING LITHIUM FROM SALINE USING SAID MATERIAL

摘要

A method for preparing a crystallized solid material of formula LiCl.2Al(OH)₃.nH₂O with n being comprised between 0.01 and 10, includes mixing in an aqueous medium, at least one source of alumina and at least one source of lithium in order to obtain a suspension, filtering the resulting suspension obtained for obtaining a slurry, followed by drying the obtained slurry and shaping the dried slurry after the drying to obtain a shaped solid material. The shaping is carried out in absence of a binder followed by drying and a hydrothermal treatment to obtain the shaped crystallized solid material of formula LiCl.2Al(OH)₃.nH₂O. A method for extracting lithium from saline solutions uses the thereby prepared material.