公开(公告)号：US09446273B2

公开(公告)日：2016-09-20

申请号：US14309706

申请日：2014-06-19

Applicant: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES

Inventor： Young-Nam Jang ,  Kyungsun Song ,  Myung Gyu Lee ,  Soo-Chun Chae ,  Hwanju Jo ,  Jun-Hwan Bang ,  Kyoung Won Ryu

IPC: A62D3/36 ,  B09B3/00 ,  A62D101/41

CPC classification number: A62D3/36 ,  A62D2101/41 ,  A62D2203/04 ,  B09B3/00 ,  B09B3/0066 ,  B09B3/0083

Abstract: Disclosed is a method of detoxifying asbestos of waste slate. The method includes concentrating the asbestos by introducing hydrochloric acid aqueous solution into waste slate powder to dissolve and remove a limestone component contained in the waste slate; and mixing the concentrated asbestos with oxalic acid and performing a low-temperature heat treatment. The waste slate is crushed and pulverized and powder of the crushed and pulverized waste slate is formed in a size in a range of 100 meshes to 300 meshes. The detoxified asbestos includes re-crystallized magnesium oxalate having a rhombohedral or amorphous shape.

Abstract translation: 公开了一种废石板石棉的解毒方法。 该方法包括通过将盐酸水溶液引入废石板粉中来浓缩石棉以溶解并除去废石板中所含的石灰石成分; 并将浓缩的石棉与草酸混合并进行低温热处理。 将废石板粉碎并粉碎，粉碎和粉碎的废石板的粉末形成在100目至300目的范围内的尺寸。 解毒石棉包括具有菱形或无定形形状的重结晶的草酸镁。

公开(公告)号：US09505629B2

公开(公告)日：2016-11-29

申请号：US14461201

申请日：2014-08-15

Applicant: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES

Inventor： Kyungsun Song ,  Young-Nam Jang ,  Soo-Chun Chae

IPC: C01F11/18 ,  C01C1/24

CPC classification number: C01F11/181 ,  C01C1/24 ,  C01P2002/30 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2004/03 ,  C01P2004/38 ,  C01P2004/45 ,  C01P2004/61 ,  C01P2006/80

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.

Abstract translation: 公开了使用直接碳酸化反应制备碳酸钙的方法。 该方法包括将燃料气脱硫石膏溶解在氨溶液中，通过将二氧化碳进入溶解有燃料气体脱硫石膏的氨溶液进行碳酸化反应后进行过滤处理，并在沉淀碳酸钙后进行过滤处理 通过将过滤的溶液保持在静止状态。