Processing hard rock lithium minerals or other materials to produce lithium materials and byproducts converted from a sodium sulfate intermediate product
US-2024425381-A1 · Dec 26, 2024 · US
Process for the recovery of lithium and transition metal using heat
US2021147960A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021147960-A1 |
| Application number | US-201917046766-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 1, 2019 |
| Priority date | Apr 11, 2018 |
| Publication date | May 20, 2021 |
| Grant date | — |
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Abstract
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Process for the recovery of transition metal from spent lithium ion batteries containing nickel, wherein said process comprises the steps of (a) heating a lithium containing transition metal oxide material to a temperature in the range of from 400 to 1200° C., (b) treating said heat-treated material with water, (c) treating the solid residue from step (b)with an acid selected from sulfuric acid, hydrochloric acid, nitric acid, methanesulfonic acid, oxalic acid and citric acid, (d) adjusting the pH value to 2.5 to 8, (e) removing compounds of Al, Cu, Fe, Zn or combinations of at least two of the foregoing from the solution or slurry obtained in step (d).
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1 .- 13 . (canceled) 14 . Process for the recovery of transition metal from spent lithium ion batteries containing nickel, wherein said process comprises the steps of (a) heating a lithium containing transition metal oxide material to a temperature in the range of from 400 to 1200° C., (b) treating said heat-treated material with water, (c) treating the solid residue obtained in step (b) with an acid selected from the group consisting of sulfuric acid, hydrochloric acid, nitric acid, methanesulfonic acid, oxalic acid and citric acid, (d) adjusting the pH value to 2.5 to 8, (e) removing compounds of Al, Cu, Fe, Zn or combinations of at least two of the foregoing from the solution or slurry obtained in step (d). 15 . Process according to claim 14 comprising an additional step (f), wherein step (f) includes precipitating nickel and, if applicable, cobalt and/or manganese as (mixed) hydroxide, oxyhydroxide or carbonate. 16 . Process according to claim 14 wherein step (e) comprises the removal of precipitates of carbonates, oxides, phosphates, hydroxides or oxyhydroxides of Al, Cu, Fe, Zn, or combinations of at least two of the foregoing. 17 . Process according to claim 14 wherein the lithium containing transition metal oxide material is present in form of complete batteries, battery modules, battery cells, or battery scraps. 18 . Process according to claim 14 wherein step (b) is performed under CO 2 at a pressure in the range of from 10 to 150 bar. 19 . Process according to claim 14 wherein step (b) is performed at a temperature in the range of from 5 to 100° C. 20 . Process according to claim 14 wherein step (b) has a duration in the range of from 20 minutes to 10 hours. 21 . Process according to claim 14 wherein step (a) is performed under inert atmosphere, under an atmosphere that contains oxygen, or the atmosphere is changed during step (a) from inert to oxygen containing atmosphere. 22 . Process according to claim 14 wherein prior to step (c) a solid-solid separation step is performed to separate non-soluble components like carbon and polymers from the metallic or metal oxide components. 23 . Process according to claim 22 wherein said solid-solid separation step is a magnetic separation step. 24 . Process according to claim 14 wherein step (d) is performed by the addition of at least one of lithium hydroxide, sodium hydroxide, ammonia and potassium hydroxide. 25 . Process according to claim 15 wherein in step (f) the precipitation of nickel and, optionally, cobalt or manganese as hydroxide, oxyhydroxide or carbonate is performed by raising the pH value above 8. 26 . Process according to claim 14 including recovering the lithium by way of precipitation as carbonate.
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- What does patent US2021147960A1 cover?
- Process for the recovery of transition metal from spent lithium ion batteries containing nickel, wherein said process comprises the steps of (a) heating a lithium containing transition metal oxide material to a temperature in the range of from 400 to 1200° C., (b) treating said heat-treated material with water, (c) treating the solid residue from step (b)with an acid selected from sulfuric acid…
- Who is the assignee on this patent?
- Basf Se
- What technology area does this patent fall under?
- Primary CPC classification C22B7/007. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu May 20 2021 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).