Patent ID: 9653764
Date: 2017-05-16
CPC Classifications: C22B,H01M,Y02E,Y02P,Y02W

Claim:
1. A method for recovering sodium from a sodium-sulfur battery housing sodium and sulfur in a battery container, the method comprising: a nozzle insertion step of inserting a nozzle to which a treatment liquid is supplied from a treatment liquid supply into the battery container; a reaction step of injecting a treatment liquid from the nozzle toward the sodium housed in a sodium-housing in the battery container, and causing the sodium to react with the treatment liquid so as to generate a reaction liquid; and a circulation step of collecting the reaction liquid, adjusting the concentration and liquid temperature of the collected reaction liquid so as to generate the treatment liquid, and returning the generated treatment liquid to the treatment liquid supply; wherein in the reaction step, while the entire amount of the sodium is reacted with the treatment liquid, the treatment liquid is continuously injected toward the sodium.