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:
Mar. 10, 2015
Filed:
Jan. 27, 2012
Applicant:
Paul Benjamin Voigt, Nundah, AU;
Inventor:
Paul Benjamin Voigt, Nundah, AU;
Assignee:
Glencore Queensland Limited, Brisbane, Queensland, AU;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C22B 19/34 (2006.01); C22B 3/00 (2006.01);
U.S. Cl.
CPC ...
C22B 19/26 (2013.01); C22B 19/34 (2013.01);
Abstract
A method of precipitating a zinc containing solid from an acidic solution containing dissolved zinc and magnesium comprising contacting the solution with a calcium containing neutralizing agent to raise the pH of the solution to 4.5 to 7.5 at a temperature of from 70 to 95° C. to thereby precipitate a solid zinc containing material and gypsum without causing substantial precipitation of magnesium, and separating the zinc containing material from the gypsum.