公开(公告)号：US10273162B2

公开(公告)日：2019-04-30

申请号：US14925637

申请日：2015-10-28

Applicant: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES

Inventor： Seung-Woo Lee ,  Soo-Chun Chae ,  Chi-Wan Jeon

IPC: C01F11/18 ,  B32B9/00

Abstract: A method of coating a calcium carbonate film. In one aspect, the method includes preparing a calcium aqueous solution by adding a calcium-containing material to distilled water; forming a calcium carbonate film on a surface of the calcium aqueous solution by leaving the calcium aqueous solution; placing the calcium carbonate film on a substrate; and forming a calcium carbonate coating film by leaving the calcium carbonate film on the substrate.

公开(公告)号：US10604894B2

公开(公告)日：2020-03-31

申请号：US15808125

申请日：2017-11-09

Applicant: Korea Institute Of Geoscience And Mineral Resources

Inventor： Chi-Wan Jeon ,  Sang-Won Park ,  Jun-Hwan Bang ,  Kyung-Sun Song ,  Seung-Woo Lee ,  Hwan-Ju Jo

IPC: D21C11/00 ,  D21H17/70

Abstract: The present invention provides a method of carbonating carbon dioxide with high purity using a paper mill waste sludge by preparing a paper mill waste sludge which is a waste product discharged during the production of papermaking, adding acid to the paper mill waste sludge and reacting the acid therewith to produce a mixed solution and stirring, separating a supernatant of the mixed solution into an eluate, adding a basic substance to the eluate and adjusting pH to precipitate some of the ions in the eluate, and then adding a reaction initiator to the eluate in which some ions are precipitated and removed, and injecting carbon dioxide for a carbonation reaction.