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. 14, 1999
Filed:
Sep. 26, 1997
NGK Spark Plug Co., Ltd., Nagoya-shi, JP;
Abstract
A method and apparatus for electrolytically extracting lithium at high purity and high efficiency are disclosed, in which the apparatus 1 includes a partition 2 constituted mainly of a perovskite-type Li ion conducting solid electrolyte, a feed chamber formed on one side of the partition in which a crude liquid containing a lithium component and impurities is introduced so as to come into contact with the partition, a recovery chamber formed on the other side of the partition in which a liquid for recovery is introduced so as to come into contact with the partition, and a means for applying an electrical field to the partition in such a manner that the crude liquid side is positive and the recovery liquid side is negative. On applying an electrical field to the partition, the lithium component of the crude liquid selectively passes through the partition in the form of Li ions into the recovery side.