Methods for recovering a target metal from iron or steel slag using at least one of a carbothermic reduction process and a pyro-hydrometallurgical process
US-2025305086-A1 · Oct 2, 2025 · US
Upgrading of titaniferous material
US9017625B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9017625-B2 |
| Application number | US-201113993305-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 24, 2011 |
| Priority date | Dec 13, 2010 |
| Publication date | Apr 28, 2015 |
| Grant date | Apr 28, 2015 |
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Abstract
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A method of upgrading a titaniferous material includes nitriding and reducing a titaniferous material which includes TiO 2 and Fe oxides in the presence of nitrogen and carbon to convert the TiO 2 to TiN and to reduce most of the Fe oxides to Fe. The Fe is oxidized in preference to the TiN to form Fe 2+ ions, whereafter the Fe 2+ ions are removed to produce an upgraded low-Fe TiN bearing material.
First claim
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The invention claimed is: 1. A method of upgrading a titaniferous material, the method including nitriding and reducing a titaniferous material which includes TiO 2 and Fe oxides in the presence of nitrogen and carbon to convert the TiO 2 to TiN and to reduce the Fe oxides to Fe, the TiN and Fe obtained from the nitriding and reduction of the titaniferous material being in the form of a carbo-nitrided intermediate which includes TiN and Fe; oxidising the Fe in preference to th…
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Chemistry & Metallurgy · mapped topic
- C22B34/1259Primary
Chemistry & Metallurgy · mapped topic
- C22B34/12Primary
Chemistry & Metallurgy · mapped topic
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- What does patent US9017625B2 cover?
- A method of upgrading a titaniferous material includes nitriding and reducing a titaniferous material which includes TiO 2 and Fe oxides in the presence of nitrogen and carbon to convert the TiO 2 to TiN and to reduce most of the Fe oxides to Fe. The Fe is oxidized in preference to the TiN to form Fe 2+ ions, whereafter the Fe 2+ ions are removed to produce an upgraded low-Fe TiN bearing ma…
- Who is the assignee on this patent?
- Van Vuuren David Steyn, Swanepoel Jaco Johannes, Csir
- What technology area does this patent fall under?
- Primary CPC classification C22B34/1259. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 28 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).