Method for treating lithium ion battery waste

Patent metadata

Field	Value
Publication number	US-12157927-B2
Application number	US-201816647932-A
Country	US
Kind code	B2
Filing date	Oct 22, 2018
Priority date	Nov 22, 2017
Publication date	Dec 3, 2024
Grant date	Dec 3, 2024

Abstract

A method for treating a lithium ion battery waste according to the present invention is a method for treating a lithium ion battery waste using a converter furnace in a copper smelting process, wherein, prior to a treatment for charging a copper mat produced in a flash smelter in a copper smelting process into a converter furnace and blowing oxygen into the converter furnace to produce crude copper, the lithium ion battery waste is introduced into the converter furnace or a ladle that is used for the charging of the copper mat into the converter furnace and then the lithium ion battery waste is burned with residual heat in the converter furnace or the ladle.

First claim

The invention claimed is:

1. A method for treating a lithium ion battery waste in a copper smelting process, the method comprising the steps of:
introducing the lithium ion battery waste into a converter furnace or a ladle furnace, wherein the converter furnace or the ladle furnace is in a state in which a copper matte is not contained;
burning the lithium ion battery waste in the converter furnace or the ladle furnace to remove organic substances and fluorine contained in the lithium ion battery waste;
charging a copper matte obtained from a flash smelter in the copper smelting process into the converter furnace or the ladle furnace after burning the lithium ion battery waste;
blowing oxygen into the converter furnace or the ladle furnace after charging with the copper matte to obtain crude copper; wherein
an amount of the lithium ion battery waste introduced into the converter furnace or the ladle furnace is adjusted such that an amount of material of fluorine contained in the lithium ion battery waste becomes an amount corresponding to 10 ppm or more and less than 35 ppm with respect to an amount of material of copper to be supplied to the converter furnace in the copper smelting process.

2. The method for treating a lithium ion battery waste according to claim 1 , further comprising a step wherein, prior to introducing the lithium ion battery waste to the converter furnace or the ladle furnace, the lithium ion battery waste is discharged to remove an electrolyte solution contained in the discharged lithium ion battery waste.

Assignees

• Sumitomo Metal Mining Co

Inventors

• Takeda Kenji
• Asano Satoshi

Classifications

• B09B3/40

  involving thermal treatment, e.g. evaporation (processes using mineral binders involving a melting or softening step B09B3/29; involving radiation B09B3/50) · CPC title

• B09B3/00

  Destroying solid waste or transforming solid waste into something useful or harmless · CPC title

• H01M10/54

  Reclaiming serviceable parts of waste accumulators · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• Y02W30/20

  Waste processing or separation · CPC title