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:
Aug. 03, 2021
Filed:
Oct. 31, 2017
Basf Toda Battery Materials Llc, Tokyo, JP;
Tanabe Corporation, Itoigawa, JP;
Manabu Yamamoto, Sanyoonoda, JP;
Osamu Sasaki, Sanyoonoda, JP;
Noriyasu Kimura, Sanyoonoda, JP;
Kenichi Nishimura, Itoigawa, JP;
Wataru Koyanagi, Itoigawa, JP;
Toru Kuwahara, Itoigawa, JP;
BASF TODA BATTERY MATERIALS LLC, Tokyo, JP;
TANABE CORPORATION, Itoigawa, JP;
Abstract
The object of the present invention is to improve production efficiency of lithium hydroxide anhydride in a method for producing lithium hydroxide anhydride from lithium hydroxide hydrate by using a rotary kiln. The method for producing lithium hydroxide anhydride comprises steps of: supplying the lithium hydroxide hydrate to a region between a heating part which is the part of the furnace core tube surrounded by the heating furnace and one end of the furnace core tube; delivering the supplied lithium hydroxide hydrate toward the other end of the furnace core tube; feeding a drying gas with a temperature of 100° C. or higher to the region between the one end and the heating part of the furnace core tube, when the lithium hydroxide hydrate is supplied; and heating and dehydrating the lithium hydroxide hydrate by the heating furnace which is set to 230-450° C. during the lithium hydroxide delivering step, to form lithium hydroxide anhydride.