Method for extracting solid soluble charges contained in a paste

摘要

The main subject of the present invention is a process for processing a paste (5) containing a solid charge (C) with a view to extracting at least one part of said solid charge (C). Said process comprises continuously:mixing, in a mixer (8), said paste (5) with a liquid solvent (3), a solvent for said at least one part of said solid charge (C), with a view to dissolving, at least partially, said at least one part of said solid charge (C) in said solvent (3);recovering, after said mixing, a biphasic system (15) comprising, on the one hand, a solution (3′) enclosing at least one fraction of said at least one part of said solid charge (C), dissolved in said solvent (3), and on the other hand, a solid residue (5′) of said paste (5); and then,separating said solution (3′) and said solid residue (5′) of said paste (5).