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:
Oct. 09, 2012
Filed:
Jun. 18, 2008
Kenneth Ekman, Pilspanristi, FI;
Manne Carla, Pargas, FI;
Mats Sundell, Hirvlax, FI;
Virginie Suhonen, Harjavalta, FI;
Joni Hautojärvi, Nakkila, FI;
Kenneth Ekman, Pilspanristi, FI;
Manne Carla, Pargas, FI;
Mats Sundell, Hirvlax, FI;
Virginie Suhonen, Harjavalta, FI;
Joni Hautojärvi, Nakkila, FI;
Crisolteq Oy, Kokkola, FI;
OMG Kokkla Chemicals Oy, Kokkola, FI;
Abstract
A method is provided for recovering metals from a spent catalyst composition containing an organic contaminant and catalytically active metals on a catalyst support. The metals are leached from the spent catalyst composition by adding under stirring an ionic liquid. The ionic liquid containing the leached metals is separated from the organic contaminant and the catalyst support by adding under stirring an anti-solvent. After removing the organic contaminant and the catalyst support, the leached metals are separated from the ionic liquid for example by selective precipitation, ion exchange, solvent extraction, electrodeposition, chromatographic, or pyrometallurgical methods.