The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 2026
Filed:
Sep. 06, 2019
Aperam, Luxembourg, LU;
Ismael Guillotte, Verquin, FR;
Eris Sinoimeri, Grenoble, FR;
Isabelle Billard, Grenoble, FR;
Jerôme Cognard, Domene, FR;
Nadine Commenges-Bernole, Bourget du Lac, FR;
Jean-Michel Damasse, Saint Etienne, FR;
APERAM, Luxembourg, LU;
Abstract
Method for recovering Cr from a pickling bath of an aqueous solution containing sulphate and Cr from a pickled metal, the method including: —forming an aqueous two-phase system from a portion of the pickling bath and a polymer including an unhindered ether function, the proportion of polymer in the ternary mixture including the pickling bath, considered to be a unique chemical component, water and polymer, ranging between the line of the equation «weight % of polymer=100%−weight % of pickling bath» and the binodal curve of the pickling bath/polymer mixture, the two-phase aqueous system including polymer and non-polymer phases; —separating the respective phases; —allowing precipitates containing Cr to form in the polymer phase; —carrying out solid/liquid separation of the polymer phase to separate the polymer and the precipitates containing Cr; —and processing the precipitates to recover the Cr. A facility is also disclosed.