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:
Jan. 07, 2020
Filed:
Oct. 17, 2018
Applicant:
Crisolteq Ltd, Harjavalta, FI;
Inventors:
Kenneth Ekman, Harjavalta, FI;
Peik Ekman, Harjavalta, FI;
Elina Lappalainen, Harjavalta, FI;
Jan-Peter Blomquist, Harjavalta, FI;
Assignee:
CrisolteQ Ltd, Harjavalta, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B 7/00 (2006.01); C23G 1/36 (2006.01); C01F 5/40 (2006.01); C01G 37/00 (2006.01); C01G 49/00 (2006.01); C01G 53/10 (2006.01); C01F 5/02 (2006.01); C01G 53/00 (2006.01);
U.S. Cl.
CPC ...
C22B 7/007 (2013.01); C01F 5/40 (2013.01); C01G 37/00 (2013.01); C01G 49/00 (2013.01); C01G 53/10 (2013.01); C23G 1/36 (2013.01); C01F 5/02 (2013.01); C01G 53/006 (2013.01);
Abstract
A novel process for treating and recovering valuable metals and other components from pickling acid residue (PAR) has been developed. The metals and other components are recovered by neutralizing the pickling acid residue using a magnesium compound or a mixture of magnesium compounds, and separating components of the resulting mixture (metals and sulfates) into products that can be reused, such as magnesium sulfate, nickel sulfate, iron and chromium phosphate, or various metal hydroxides or oxides.