Leaching aids and methods of using leaching aids
US-2021381079-A1 · Dec 9, 2021 · US
Method for processing ore or refining intermediate
US2022298600A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022298600-A1 |
| Application number | US-202017637387-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 30, 2020 |
| Priority date | Oct 31, 2019 |
| Publication date | Sep 22, 2022 |
| Grant date | — |
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Abstract
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A method for processing ores containing gold or refining intermediates containing gold, the refining intermediate being obtained by subjecting the ores to a refining process, wherein the method includes: a leaching step of leaching gold from the ores or the refining intermediates using a sulfate solution containing iodide ions and iron (III) ions as a leaching solution; an adsorption step of adsorbing iodine and gold in the leached solution obtained in the leaching step on activated carbon; and an iodine separation step of separating iodine from the activated carbon while leaving gold on the activated carbon that has undergone the adsorption step.
First claim
Opening claim text (preview).
1 . A method for processing ores containing gold or refining intermediates containing gold, the refining intermediate being obtained by subjecting the ores to a refining process, wherein the method comprises: a leaching step of leaching gold from the ores or the refining intermediates using a sulfate solution containing iodide ions and iron (III) ions as a leaching solution; an adsorption step of adsorbing iodine and gold in the leached solution obtained in the leaching step on activated carbon; and an iodine separation step of separating iodine from the activated carbon while leaving gold on the activated carbon that has undergone the adsorption step. 2 . The method for processing ores or refining intermediates according to claim 1 , wherein iodine is separated using a sulfurous acid solution in the iodine separation step. 3 . The method for processing ores or refining intermediates according to claim 1 , wherein an iodine concentration in the leaching solution is from 10 mg/L to 10000 mg/L in the leaching step. 4 . The method for processing ores or refining intermediates according to claim 1 , further comprising a gold separation step of separating gold from the activated carbon from which iodine has been separated in the iodine separation step. 5 . The method for processing ores or refining intermediates according to claim 1 , wherein the ores or refining intermediates further contain copper, and gold and copper are leached from the ores or refining intermediates in the leaching step, and wherein the method further comprises a copper separation step of separating copper from an adsorbed solution obtained in the adsorption step.
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Classifications
containing halogen · CPC title
Treating solutions (with organic compounds C22B3/20) · CPC title
Hydrochloric acid {, other halogenated acids or salts thereof} · CPC title
by wet processes (extraction of metal compounds by leaching in organic solutions C22B3/16; treatment or purification of solutions by liquid-liquid extraction C22B3/26) · CPC title
by adsorption on solid substances, e.g. by extraction with solid resins · CPC title
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- What does patent US2022298600A1 cover?
- A method for processing ores containing gold or refining intermediates containing gold, the refining intermediate being obtained by subjecting the ores to a refining process, wherein the method includes: a leaching step of leaching gold from the ores or the refining intermediates using a sulfate solution containing iodide ions and iron (III) ions as a leaching solution; an adsorption step of ad…
- Who is the assignee on this patent?
- Jx Nippon Mining & Metals Corp
- What technology area does this patent fall under?
- Primary CPC classification B01J20/20. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Sep 22 2022 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).