Method for producing precursor of lithium adsorbent
US-12090464-B2 · Sep 17, 2024 · US
Producing method of granulated body for lithium adsorption
US12589380B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12589380-B2 |
| Application number | US-202218007704-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 16, 2022 |
| Priority date | Jun 30, 2021 |
| Publication date | Mar 31, 2026 |
| Grant date | Mar 31, 2026 |
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Abstract
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A producing method of granulated body for lithium adsorption that allows sufficiently suppressing a manganese elution in an eluting step when producing lithium on a commercial basis, includes a kneading step of kneading a powder of a lithium adsorbent precursor and a binder to obtain a kneaded product, a granulating step of granulating the kneaded product to obtain a 1st granulated body, and a sintering step of sintering the 1st granulated body to obtain a 2nd granulated body. The configuration allows a manganese valence contained in the lithium adsorbent precursor to change from 2 to 4, and thus allowing the suppressed manganese elution in the eluting step. Further, in production on a commercial basis, the lithium adsorbent can be used repeatedly. In addition, a manganese concentration in an eluent obtained in the eluting step can be suppressed, thus allowing loads in steps after the eluting step to be reduced.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for producing a granulated body for lithium adsorption, comprising: a kneading step of kneading a powder of a lithium adsorbent precursor and a binder to obtain a kneaded product; a granulating step of granulating the kneaded product to obtain a 1st granulated body; and a sintering step of sintering the 1st granulated body to obtain a 2nd granulated body, wherein a sintering temperature of the sintering step is 520° C. or more and 600° C. or less, and a retention time of the sintering temperature is 4 hours or more and 6 hours or less. 2 . The method for producing the granulated body for lithium adsorption according to claim 1 , wherein the lithium adsorbent precursor is Li 1.6 Mn 1.6 O 4 or Li 1.33 Mn 1.67 O 4 . 3 . The method for producing the granulated body for lithium adsorption according to claim 1 , wherein the binder is selected from the group consisting of silica sol, alumina sol, zirconia sol, calcium oxide, silicon dioxide, calcium silicate, calcium sulfate, calcium hydroxide, bentonite, kaolinite, carboxymethyl cellulose, hydroxyethyl cellulose, polyethylene glycol and polyethylene oxide. 4 . The method for producing the granulated body for lithium adsorption according to claim 1 , wherein the lithium adsorbent precursor is a substance that becomes a lithium adsorbent by replacing Li with hydrogen from the lithium adsorbent precursor, and the lithium adsorbent is a substance that can selectively adsorb lithium.
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Classifications
Granulating, agglomerating or aggregating · CPC title
- B01J20/3014Primary
Kneading · CPC title
comprising oxides or hydroxides of metals not provided for in group B01J20/04 · CPC title
Compressing · CPC title
Use of binding agents; addition of materials ameliorating the mechanical properties of the produced sorbent · CPC title
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- What does patent US12589380B2 cover?
- A producing method of granulated body for lithium adsorption that allows sufficiently suppressing a manganese elution in an eluting step when producing lithium on a commercial basis, includes a kneading step of kneading a powder of a lithium adsorbent precursor and a binder to obtain a kneaded product, a granulating step of granulating the kneaded product to obtain a 1st granulated body, and a …
- Who is the assignee on this patent?
- Sumitomo Metal Mining Co, Sumitomo Metal Mining Ltd
- What technology area does this patent fall under?
- Primary CPC classification B01J20/3014. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 31 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).