Abstract: The present disclosure suggests a method of manufacturing flake aluminum oxide using a microwave including: performing a pre-treatment on a starting material by grinding the starting material such as alumina hydrate, aluminum salt or the like and classifying particles with an appropriate size; manufacturing transition alumina by performing a heat treatment by means of heating the pre-treated starting material; mixing the transition alumina with molten salt and an additive and then dispersing and grinding the mixed compounds; melting and synthesizing flake aluminum oxide by heating the dispersed and grinded mixture with a microwave as a heating source; separating the molten salt and the additive from the synthesized aluminum oxide; and performing a post-treatment on the flake aluminum oxide by removing a foreign substance such as an additive residue stuck to a surface of a crystal particle of the separated flake aluminum oxide.
Type:
Grant
Filed:
August 28, 2008
Date of Patent:
November 8, 2011
Assignees:
JPS Micro-Tech Co., Ltd.
Inventors:
Geum Seok Seo, Hui Chan Bak, Seong Soo Park, Sang Geun Lee, Kyeong Doo Ryou, Tae Gun Kim, Jin Sik Yoon
Abstract: The present disclosure suggests a method of manufacturing flake aluminum oxide using a microwave including: performing a pre-treatment on a starting material by grinding the starting material such as alumina hydrate, aluminum salt or the like and classifying particles with an appropriate size; manufacturing transition alumina by performing a heat treatment by means of heating the pre-treated starting material; mixing the transition alumina with molten salt and an additive and then dispersing and grinding the mixed compounds; melting and synthesizing flake aluminum oxide by heating the dispersed and grinded mixture with a microwave as a heating source; separating the molten salt and the additive from the synthesized aluminum oxide; and performing a post-treatment on the flake aluminum oxide by removing a foreign substance such as an additive residue stuck to a surface of a crystal particle of the separated flake aluminum oxide.
Type:
Application
Filed:
August 28, 2008
Publication date:
March 3, 2011
Applicants:
JPS MICRO-TECH CO., LTD, Geum Seok Seo
Inventors:
Geum Seok Seo, Hui Chan Bak, Seong Soo Park, Sang Geun Lee, Kyeong Doo Ryou, Tae Gun Kim, Jin Sik Yoon