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:
Nov. 29, 2016
Filed:
Aug. 15, 2014
Applicant:
Korea Institute of Geoscience and Mineral Resources, Daejeon, KR;
Inventors:
Assignee:
Korea Institute of Geoscience and Mineral Resources, Daejeon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01F 11/18 (2006.01); C01C 1/24 (2006.01);
U.S. Cl.
CPC ...
C01F 11/181 (2013.01); C01C 1/24 (2013.01); C01P 2002/30 (2013.01); C01P 2002/72 (2013.01); C01P 2002/85 (2013.01); C01P 2004/03 (2013.01); C01P 2004/38 (2013.01); C01P 2004/45 (2013.01); C01P 2004/61 (2013.01); C01P 2006/80 (2013.01);
Abstract
Disclosed is a method of preparing calcium carbonate using a direct carbonation reaction. The method includes dissolving fuel gas desulfurization gypsum into an ammonia solution, performing a filtering process after making a carbonation reaction by feeding carbon dioxide into the ammonia solution in which the fuel gas desulfurization gypsum is dissolved, and performing a filtering process after precipitating the calcium carbonate by maintaining a filtered solution in a stationary state.