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:
Jun. 11, 2019
Filed:
Jan. 14, 2015
Shanghai Phichem Material Co. Ltd., Shanghai, CN;
Bing Zhao, Shanghai, CN;
Yun Zhang, Shanghai, CN;
Yinsheng Wang, Shangai, CN;
Jinshan Zhang, Dublin, CA (US);
Shanghai Phichem Material Co. Ltd., Shanghai, CN;
Abstract
A method for manufacturing high-purity aluminum hydroxide and alumina material is disclosed, which includes the steps of: reacting aluminum metal with a mixture of organic base and water to form aluminum hydroxide suspension; removing water by filtration to form aluminum hydroxide slurry, and for manufacturing alumina material, further drying/baking the slurry to form aluminum oxide powders. The method is amenable to mass production of high-purity aluminum hydroxide and aluminum oxide containing total silica and non-aluminum metal impurities less than 0.005% and having a bulk density higher than 3.0 g/cc. In addition, the invention also provides high-purity aluminum hydroxide and aluminum oxide prepared by using the method disclosed and bulk products prepared therefrom.