Leaching agent composition and method of removing metal from catalyst material
US-2024175105-A1 · May 30, 2024 · US
Method for recycling hydrophobic deep eutectic solvent and nickel leaching method
US2024076548A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024076548-A1 |
| Application number | US-202318453728-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 22, 2023 |
| Priority date | Aug 26, 2022 |
| Publication date | Mar 7, 2024 |
| Grant date | — |
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Abstract
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Provided is a method for enabling recovery of metal element leaching capacity of a deep eutectic solvent used for leaching a metal element from an ore containing the metal element. A method for recycling a hydrophobic deep eutectic solvent disclosed here includes: preparing a hydrophobic deep eutectic solvent used for leaching a metal element from an ore containing the metal element; and bringing the hydrophobic deep eutectic solvent and hydrochloric acid into contact with each other. In the hydrophobic deep eutectic solvent, a hydrogen bond donor is a carboxy group-containing compound, and a hydrogen bond acceptor is chloride salt. The amount of use of the hydrochloric acid is such that hydrogen chloride is 1 mole or more with respect to 1 mole of the hydrogen bond acceptor.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for recycling a hydrophobic deep eutectic solvent, the method comprising: preparing a hydrophobic deep eutectic solvent used for leaching a metal element from an ore containing the metal element; and bringing the hydrophobic deep eutectic solvent and hydrochloric acid into contact with each other, wherein in the hydrophobic deep eutectic solvent, a hydrogen bond donor is a carboxy group-containing compound, and a hydrogen bond acceptor is chloride salt, and an amount of use of the hydrochloric acid is such that hydrogen chloride is 1 mole or more with respect to 1 mole of the hydrogen bond acceptor. 2 . The method according to claim 1 , wherein the amount of use of the hydrochloric acid is such that hydrogen chloride is 2 moles or more with respect to 1 mole of the hydrogen bond acceptor. 3 . The method according to claim 1 , wherein the hydrogen bond donor is fatty acid, and the hydrogen bond acceptor is quaternary ammonium chloride. 4 . A nickel leaching method comprising: obtaining a recycled hydrophobic deep eutectic solvent by the method for recycling a hydrophobic deep eutectic solvent according to claim 1 ; and bringing the recycled hydrophobic deep eutectic solvent and a nickel ore into contact with each other.
Assignees
Inventors
Classifications
- C22B23/0407Primary
Leaching processes · CPC title
- C22B3/1658Primary
Leaching with acyclic or carbocyclic agents of different types in admixture, e.g. with organic acids added to oximes · CPC title
- C09K13/00Primary
Etching, surface-brightening or pickling compositions (for glass C03C15/00, {C03C25/66; for mortars, concrete, artificial or natural stone or ceramics C04B41/5338}; for metallic material C23F, C23G1/00, C25F1/00; {for semi-conductors H10P52/40}) · CPC title
Sulfates · CPC title
by leaching (C22B3/18 takes precedence) · CPC title
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- What does patent US2024076548A1 cover?
- Provided is a method for enabling recovery of metal element leaching capacity of a deep eutectic solvent used for leaching a metal element from an ore containing the metal element. A method for recycling a hydrophobic deep eutectic solvent disclosed here includes: preparing a hydrophobic deep eutectic solvent used for leaching a metal element from an ore containing the metal element; and bringi…
- Who is the assignee on this patent?
- Prime Planet Energy & Solutions Inc, Univ Kyushu Nat Univ Corp, Toyota Tsusho Corp, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C22B23/0407. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Mar 07 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).