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:
Jun. 07, 2011
Filed:
Jul. 05, 2007
Huibrecht Adriaan Wouters, Leiden, NL;
Andreas Ten Cate, Amsterdam, NL;
Elisabeth Maria Beunder, Alkmaar, NL;
Willem Boender, Ridderkerk, NL;
Marcellus Albertus Hogenboom, Oude Wetering, NL;
René Kieft, Beverwijk, NL;
Joost Christiaan Storm, Akersloot, NL;
Huibrecht Adriaan Wouters, Leiden, NL;
Andreas Ten Cate, Amsterdam, NL;
Elisabeth Maria Beunder, Alkmaar, NL;
Willem Boender, Ridderkerk, NL;
Marcellus Albertus Hogenboom, Oude Wetering, NL;
René Kieft, Beverwijk, NL;
Joost Christiaan Storm, Akersloot, NL;
Aleris Switzerland GmbH, Schaffhausen, CH;
Abstract
A method and device for the purification and separation of purified metal from a metal mother liquid having a specific density and comprising one or more foreign element(s). The method includes: providing in a column device a starting material including metal crystals and a metal mother liquid including at least one foreign element; applying a temperature difference between a relatively hot zone at the upper end of the column and a relatively cool zone at the lower end of the column; a separation step wherein at least a part of the metal crystals is separated from the metal mother liquid by rising of the metal crystals to the upper surface of the metal mother liquid; and a further separation step wherein purified metal floating on the upper surface of the metal mother liquid is discharged from the column device.