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
Method for recovering scandium
US2021284547A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021284547-A1 |
| Application number | US-201716328380-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 21, 2017 |
| Priority date | Aug 30, 2016 |
| Publication date | Sep 16, 2021 |
| Grant date | — |
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- Title
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Abstract
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Provided is a method for recovering scandium as scandium oxide that contains high-quality scandium and in which coarse particles having good handling properties are formed. This method for recovering scandium includes a step for carrying out an oxalate conversion process wherein oxalic acid is used in a solution containing scandium (scandium-containing solution) to generate a reaction in which the scandium is converted into an oxalate form, the method characterized in that the temperature of the reaction solution during the oxalate conversion process is 50° C. to 80° C.
First claim
Opening claim text (preview).
1 . A method for recovering scandium, comprising: a step for carrying out an oxalate conversion treatment in which oxalic acid is used in a solution containing scandium (scandium-containing solution) to cause a reaction in which the scandium is converted into an oxalate form, wherein a temperature of a reaction solution during the treatment is set to 50° C. or more and 80° C. or less upon the oxalate conversion treatment. 2 . The method for recovering scandium according to claim 1 , wherein scandium oxalate is obtained by the oxalate conversion treatment and the scandium oxalate is roasted to generate scandium oxide. 3 . The method for recovering scandium according to claim 1 , wherein an oxalic acid solution having a temperature adjusted to 50° C. or more and 80° C. or less is used as the oxalic acid. 4 . The method for recovering scandium according to claim 1 , wherein the scandium-containing solution is obtained by subjecting a solution containing scandium to an ion exchange treatment and/or a solvent extraction treatment. 5 . The method for recovering scandium according to claim 2 , wherein an oxalic acid solution having a temperature adjusted to 50° C. or more and 80° C. or less is used as the oxalic acid. 6 . The method for recovering scandium according to claim 2 , wherein the scandium-containing solution is obtained by subjecting a solution containing scandium to an ion exchange treatment and/or a solvent extraction treatment. 7 . The method for recovering scandium according to claim 3 , wherein the scandium-containing solution is obtained by subjecting a solution containing scandium to an ion exchange treatment and/or a solvent extraction treatment.
Assignees
Inventors
Classifications
by ion-exchange extraction · CPC title
- C22B3/44Primary
by chemical processes (treatment or purification of solutions by liquid-liquid extraction C22B3/26, by ion-exchange extraction C22B3/42) · CPC title
- C01F17/212Primary
Scandium oxides or hydroxides · CPC title
Obtaining rare earth metals · CPC title
Recycling · CPC title
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- What does patent US2021284547A1 cover?
- Provided is a method for recovering scandium as scandium oxide that contains high-quality scandium and in which coarse particles having good handling properties are formed. This method for recovering scandium includes a step for carrying out an oxalate conversion process wherein oxalic acid is used in a solution containing scandium (scandium-containing solution) to generate a reaction in which …
- Who is the assignee on this patent?
- Sumitomo Metal Mining Co
- What technology area does this patent fall under?
- Primary CPC classification C22B3/44. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Sep 16 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).