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:
Dec. 15, 2015
Filed:
Feb. 15, 2012
Jun-ichi Takahashi, Ehime, JP;
Kazuhiro Mori, Ehime, JP;
Toshirou Tan, Ehime, JP;
SUMITOMO METAL MINING CO., LTD., Tokyo, JP;
Abstract
Provided is a method for improving the recovery rate of valuable metals such as cobalt when drying the battery waste of lithium ion batteries and the like. A second alloy excellent in terms of iron-cobalt separation performance and containing a small amount of iron is obtained by performing: a pre-oxidation step (ST) for roasting and pre-oxidizing battery waste containing aluminum and iron; a melting step (ST) for obtaining a molten product by melting the battery waste after the pre-oxidation step; a first slag separation step (ST) for separating and recovering first slag containing aluminum oxide from the molten product; a second oxidation step (ST) for oxidizing a molten first alloy after the first slag separation step; and a second slag separation step (ST) for separating and recovering a second slag containing iron from a second alloy after the second oxidation step (ST).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile