Process of leaching gold
US-9045811-B2 · Jun 2, 2015 · US
Process of leaching gold
US9593394B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9593394-B2 |
| Application number | US-201414336138-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 21, 2014 |
| Priority date | May 30, 2011 |
| Publication date | Mar 14, 2017 |
| Grant date | Mar 14, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Disclosed is a process of leaching gold that can be inexpensively and efficiently carried out from a mixture containing sulfur and gold, typically from the material containing sulfur and gold that is an intermediate product recovered by the flotation method in the hydrometallurgical method. Specifically, disclosed is a process of leaching gold from the mixture containing elemental sulfur and gold, the process involving combining the mixture containing elemental sulfur and gold and an aqueous solution of hydroxide of one or more of metals of alkali metals and alkaline earth metals, the hydroxides reacting with elemental sulfur to form thiosulfate of alkali and/or alkaline earth metal, and the gold thereby being leached by reaction with the thiosulfate.
First claim
Opening claim text (preview).
What is claimed is: 1. A process of leaching gold from floats containing a mixture of elemental sulfur and gold, said floats recovered by a flotation method from a post-leaching residue obtained after a gold-containing copper concentrate is leached, the process comprising: contacting said mixture with an aqueous solution of one or more metal hydroxide, wherein said one or more metal is one or more metal selected from the group consisting of alkali metal and alkaline earth metal, reacting said one or more metal hydroxide and elemental sulfur to produce one or more metal thiosulfate, and leaching gold by the produced one or more metal thiosulfate.
Assignees
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Classifications
Froth-flotation processes · CPC title
in inorganic alkaline solutions · 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
- C22B11/042Primary
Recovery of noble metals from waste materials · CPC title
Cross-Sectional Technologies · mapped topic
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Frequently asked questions
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- What does patent US9593394B2 cover?
- Disclosed is a process of leaching gold that can be inexpensively and efficiently carried out from a mixture containing sulfur and gold, typically from the material containing sulfur and gold that is an intermediate product recovered by the flotation method in the hydrometallurgical method. Specifically, disclosed is a process of leaching gold from the mixture containing elemental sulfur and go…
- Who is the assignee on this patent?
- Jx Nippon Mining & Metals Corp
- What technology area does this patent fall under?
- Primary CPC classification C22B11/042. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 14 2017 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).