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:
Sep. 20, 2016
Filed:
Jun. 19, 2014
Korea Institute of Geoscience and Mineral Resources, Daejeon, KR;
Young-Nam Jang, Daejeon, KR;
Kyungsun Song, Daejeon, KR;
Myung Gyu Lee, Daejeon, KR;
Soo-Chun Chae, Seoul, KR;
Hwanju Jo, Daejeon, KR;
Jun-Hwan Bang, Daejeon, KR;
Kyoung Won Ryu, Daejeon, KR;
KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCE, Daejeon, KR;
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.