Production method of maraging steel
US-11427897-B2 · Aug 30, 2022 · US
Method for recovering valuable metal from used lib
US2024132995A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024132995-A1 |
| Application number | US-202218278427-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 8, 2022 |
| Priority date | Mar 11, 2021 |
| Publication date | Apr 25, 2024 |
| Grant date | — |
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Abstract
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This method for recovering a valuable metal from a used LIB includes: a step of adding, to an electrode assembly taken out of a detoxified used LIB, metallic zinc in an excess amount relative to a mass of the electrode assembly; a step of heating a mixture of the electrode assembly and the metallic zinc to form a molten metal; a step of taking out the molten metal and separating the molten metal into an alloy metal and a slag; and a step of heating the alloy metal to volatilize zinc in the alloy metal, and thereby, recovering an alloy metal of a valuable metal.
First claim
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1 . A method for recovering a valuable metal from a used LIB, comprising: a step of adding, to an electrode assembly taken out of a detoxified used LIB, metallic zinc in an excess amount relative to a mass of the electrode assembly; a step of heating a mixture of the electrode assembly and the metallic zinc to form a molten metal; a step of taking out the molten metal and separating the molten metal into an alloy metal and a slag; and a step of heating the alloy metal to volatilize zinc in the alloy metal, and thereby, recovering an alloy metal of a valuable metal. 2 . The method for recovering a valuable metal from a used LIB according to claim 1 , wherein the metallic zinc is added in an amount of 10 to 20 times by mass an amount of a cathode active material in the electrode assembly. 3 . The method for recovering a valuable metal from a used LIB according to claim 1 , wherein the molten metal containing the alloy metal of zinc and the valuable metal is formed by heating at a temperature of 600° C. to 900° C. in the atmosphere. 4 . The method for recovering a valuable metal from a used LIB according to claim 1 , wherein the alloy metal separated from the slag is heated at a temperature of 910° C. or higher to volatilize the zinc in the alloy metal, and an alloy metal of copper, nickel, and cobalt is recovered. 5 . The method for recovering a valuable metal from a used LIB according to claim 2 , wherein the molten metal containing the alloy metal of zinc and the valuable metal is formed by heating at a temperature of 600° C. to 900° C. in the atmosphere. 6 . The method for recovering a valuable metal from a used LIB according to claim 2 , wherein the alloy metal separated from the slag is heated at a temperature of 910° C. or higher to volatilize the zinc in the alloy metal, and an alloy metal of copper, nickel, and cobalt is recovered. 7 . The method for recovering a valuable metal from a used LIB according to claim 3 , wherein the alloy metal separated from the slag is heated at a temperature of 910° C. or higher to volatilize the zinc in the alloy metal, and an alloy metal of copper, nickel, and cobalt is recovered. 8 . The method for recovering a valuable metal from a used LIB according to claim 5 , wherein the alloy metal separated from the slag is heated at a temperature of 910° C. or higher to volatilize the zinc in the alloy metal, and an alloy metal of copper, nickel, and cobalt is recovered.
Assignees
Inventors
Classifications
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
Reclaiming serviceable parts of waste accumulators · CPC title
- C22B9/16Primary
Remelting metals (liquating C22B9/02) · CPC title
only remelting, e.g. of chips, borings, turnings; apparatus used therefor · CPC title
Smelting or converting · CPC title
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- What does patent US2024132995A1 cover?
- This method for recovering a valuable metal from a used LIB includes: a step of adding, to an electrode assembly taken out of a detoxified used LIB, metallic zinc in an excess amount relative to a mass of the electrode assembly; a step of heating a mixture of the electrode assembly and the metallic zinc to form a molten metal; a step of taking out the molten metal and separating the molten meta…
- Who is the assignee on this patent?
- Mitsubishi Materials Corp
- What technology area does this patent fall under?
- Primary CPC classification C22B9/16. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Apr 25 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).