US 2012/0073984 A1 · METHOD FOR RECOVERING METALLIC LITHIUM

Abstract

An object is to recover metallic lithium from metallic lithium on which an unnecessary substance is formed without discarding the metallic lithium on which an unnecessary substance is formed. The present invention relates to a method for recovering metallic lithium in such a manner that metallic lithium on which a substance is formed is reacted with nitrogen to form lithium nitride; the lithium nitride is reacted with carbon dioxide to form lithium carbonate; the lithium carbonate is reacted with hydrochloric acid to form lithium chloride; the lithium chloride and potassium chloride are melted; and electrolysis is applied to the melted lithium chloride and potassium chloride.

Claims21

Dependent claims

A method for recovering metallic lithium, comprising the steps of:

forming lithium nitride by a reaction of metallic lithium with nitrogen;
forming lithium carbonate by a reaction of the lithium nitride with carbon dioxide;
forming lithium chloride by a reaction of the lithium carbonate with hydrochloric acid;
melting the lithium chloride;
and
applying electrolysis to the melted lithium chloride.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/232,001Filed 14 Sep 2011

Priority

JP 2010-21291623 Sep 2010

Published

29 Mar 2012

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

C22B 26/12
Obtaining alkali metals: obtaining lithium
C25C 3/02
Electrolytic production, recovery or refining of metals by electrolysis of melts: of alkali or alkaline earth metals
H01M 10/54
Secondary cells; Manufacture thereof: reclaiming serviceable parts of waste accumulators
Y02P 10/20
Technologies related to metal processing: recycling

Method for recovering metallic lithium

Life of this patent

Method for recovering metallic lithium

Life of this patent

Abstract

Claims21