Processing hard rock lithium minerals or other materials to produce lithium materials and byproducts converted from a sodium sulfate intermediate product
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Removal of radionuclides from mixtures
US10435766B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10435766-B2 |
| Application number | US-201615546086-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 25, 2016 |
| Priority date | Jan 26, 2015 |
| Publication date | Oct 8, 2019 |
| Grant date | Oct 8, 2019 |
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- Title
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Abstract
Official abstract text for this publication.
The present invention relates to a method of separating radioactive elements from a mixture, wherein the mixture is treated with at least one alkanesulfonic acid and at least one further acid, selected from the group consisting of hydrochloric acid, nitric acid, amidosulfonic acid and mixtures thereof and also the use of at least one alkanesulfonic acid and at least one further acid for separating radioactive elements from mixtures comprising these.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of separating a radioactive element from a mixture, the method comprising: treating the mixture with at least one alkanesulfonic acid and at least one further acid selected from the group consisting of hydrochloric acid, nitric acid, amidosulfonic acid and a mixture thereof, such that at least one radioactive element is separated from the mixture, wherein: the mixture is an ore or an ore concentrate; and the at least one radioactive element separated from the mixture is selected from the group consisting of uranium-238, uranium-235, thorium-230, thorium-227, lead-210, radium-226 and mixtures thereof. 2. The method according to claim 1 , wherein the at least one alkanesulfonic acid and the at least one further acid are aqueous compositions. 3. The method according to claim 1 , wherein the mixture is treated firstly with the at least one alkanesulfonic acid and subsequently with the at least one further acid. 4. The method according to claim 1 , wherein the mixture is treated firstly with the at least one further acid and subsequently with the at least one alkanesulfonic acid. 5. The method according to claim 1 , wherein methanesulfonic acid is used as the at least one alkanesulfonic acid. 6. The method according to claim 1 , wherein the mixture is treated with an aqueous composition comprising the at least one alkanesulfonic acid and the at least one further acid. 7. The method according to claim 1 , wherein the mixture is treated with an aqueous composition consisting of the at least one alkanesulfonic acid, the at least one further acid, and water. 8. The method according to claim 1 , wherein the mixture is an ore concentrate. 9. The method according to claim 1 , wherein the radioactive element is selected from the group consisting of uranium-238, thorium-230, uranium-235, thorium-227, thorium-228 and mixtures thereof. 10. The method according to claim 1 , wherein the mixture is an aqueous slurry. 11. The method according to claim 1 , wherein the mixture is treated with an aqueous composition comprising from 0.5 to 2 moles of hydrochloric acid and from 1 to 20% by weight of methanesulfonic acid. 12. The method according to claim 1 , wherein the further acid is hydrochloric acid.
Assignees
Inventors
Classifications
- C22B3/08Primary
Sulfuric acid {, other sulfurated acids or salts thereof} · CPC title
by acid leaching · CPC title
Processing (separating different isotopes of the same chemical element B01D59/00) · CPC title
Chromium or chromium compounds, e.g. chromates · CPC title
with organic acids · CPC title
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- What does patent US10435766B2 cover?
- The present invention relates to a method of separating radioactive elements from a mixture, wherein the mixture is treated with at least one alkanesulfonic acid and at least one further acid, selected from the group consisting of hydrochloric acid, nitric acid, amidosulfonic acid and mixtures thereof and also the use of at least one alkanesulfonic acid and at least one further acid for separat…
- Who is the assignee on this patent?
- Basf Se
- What technology area does this patent fall under?
- Primary CPC classification C22B3/08. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 08 2019 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).