Method of preparing a gold-containing solution and process arrangement for recovering gold and silver
US-10060007-B2 · Aug 28, 2018 · US
Method for recovering lead from copper smelting dust
US2024076759A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024076759-A1 |
| Application number | US-202118268451-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 9, 2021 |
| Priority date | Dec 23, 2020 |
| Publication date | Mar 7, 2024 |
| Grant date | — |
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- Title
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Abstract
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There is provided a method for recovering lead from copper smelting dust according to the present invention includes an alkali leaching step of leaching lead contained in copper smelting dust with an alkali solution, a step of performing a solid liquid separation on a post-leaching solution and a leaching residue after the alkali leaching step, a neutralization step of adding an acid to the separated post-leaching solution to precipitate a lead, and a step of recovering a precipitate containing the lead by performing a solid liquid separation.
First claim
Opening claim text (preview).
1 . A method for recovering lead from copper smelting dust, comprising: an alkali leaching step of leaching lead contained in copper smelting dust with an alkali solution; a step of performing a solid liquid separation on a post-leaching solution and a leaching residue after the alkali leaching step; a neutralization step of adding an acid to the separated post-leaching solution to precipitate a lead; and a step of recovering a precipitate containing the lead by performing a solid liquid separation. 2 . The method for recovering lead from copper smelting dust according to claim 1 , wherein the lead is leached out under a liquid condition of a pH of 13.0 or more in the alkali leaching step, and the lead is precipitated under a liquid condition in an alkali range of a pH of 12.5 or less in the neutralization step. 3 . The method for recovering lead from copper smelting dust according to claim 1 , wherein the copper smelting dust is washed with water or an acid, and the washed copper smelting dust is subjected to the alkali leaching. 4 . The method for recovering lead from copper smelting dust according to claim 2 , wherein the copper smelting dust is washed with water or an acid, and the washed copper smelting dust is subjected to the alkali leaching.
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Classifications
Multistage extraction · CPC title
Use of anti-solvent · CPC title
Compositional purity · CPC title
by chemical processes (treatment or purification of solutions by liquid-liquid extraction C22B3/26, by ion-exchange extraction C22B3/42) · CPC title
- C22B3/12Primary
in inorganic alkaline solutions · CPC title
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- What does patent US2024076759A1 cover?
- There is provided a method for recovering lead from copper smelting dust according to the present invention includes an alkali leaching step of leaching lead contained in copper smelting dust with an alkali solution, a step of performing a solid liquid separation on a post-leaching solution and a leaching residue after the alkali leaching step, a neutralization step of adding an acid to the sep…
- Who is the assignee on this patent?
- Mitsubishi Materials Corp
- What technology area does this patent fall under?
- Primary CPC classification C22B3/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Mar 07 2024 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).