Method for extracting a refractory metal from an ore, a concentrate or a waste product
US-2022364205-A1 · Nov 17, 2022 · US
Method for extracting vanadium from shale
US8945491B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8945491-B2 |
| Application number | US-201314010500-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 26, 2013 |
| Priority date | Nov 14, 2012 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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A method for extracting vanadium from shale, the method including: a) grinding the shale into fine powders, mixing the fine powders with an additive in a mass ratio of 1:0.04-0.12 to yield a mixture, heating the mixture to a temperature of between 850 and 950° C. at a heating rate of 5-9° C./min, and baking the mixture for between 30 and 90 min; b) immersing the product in water and acid respectively to yield a first solution and a second solution, combining the two solutions, and performing ion exchange adsorption on the combined solution using a styrene-divinylbenzene based macroporous anion-exchange resin; and c) performing desorption, purification, and precipitation to yield poly ammonium vanadate, and calcining the poly ammonium vanadate at a temperature of between 450 and 530° C. for between 20 and 50 min to yield V 2 O 5 .
First claim
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The invention claimed is: 1. A method for extracting vanadium from shale, the method comprising the following steps: a) grinding the shale into fine powders, mixing the fine powders with an additive in a mass ratio of 1:0.04-0.12 to yield a mixture, heating the mixture to a temperature of between 850 and 950° C. at a heating rate of 5-9° C./min, and baking the mixture for between 30 and 90 min; b) immersing a product resulting from the baking in step a) in water to yield a first…
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- What does patent US8945491B2 cover?
- A method for extracting vanadium from shale, the method including: a) grinding the shale into fine powders, mixing the fine powders with an additive in a mass ratio of 1:0.04-0.12 to yield a mixture, heating the mixture to a temperature of between 850 and 950° C. at a heating rate of 5-9° C./min, and baking the mixture for between 30 and 90 min; b) immersing the product in water and acid respec…
- Who is the assignee on this patent?
- Univ Wuhan Tech
- What technology area does this patent fall under?
- Primary CPC classification C22B34/22. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 03 2015 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).