System and method for regeneration and recirculation of a reducing agent using highly exothermic reactions induced by mixed industrial slags
US-9840756-B1 · Dec 12, 2017 · US
Lithium-rich metallurgical slag
US2019032171A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019032171-A1 |
| Application number | US-201716069333-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 4, 2017 |
| Priority date | Jan 12, 2016 |
| Publication date | Jan 31, 2019 |
| Grant date | — |
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Abstract
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The present invention concerns a slag composition having a high lithium content, suitable as additive in the manufacture of end-user products, or for the economic recovery of the contained lithium. The lithium concentration indeed compares favorably with that of spodumene, the classic mineral mined for lithium production. This slag is characterized by a composition according to: 3%<Li 2 O<20%; 1%<MnO<7%; 38%<Al 2 O 3 <65%; CaO<55%; and, SiO 2 <45%.
First claim
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1 - 7 . (canceled) 8 . A Li 2 O bearing metallurgical slag comprising Al 2 O 3 , SiO 2 , CaO, and MnO, wherein the by-weight composition is as follows: 3%<Li 2 O<20%; 1%<MnO<7%; 38%<Al 2 O 3 <65%; CaO<55%; and SiO 2 <45%. 9 . The Li 2 O bearing metallurgical slag of claim 8 , wherein the Li 2 O concentration is higher than 5% 10 . The Li 2 O bearing metallurgical slag of claim 8 , wherein the SiO 2 concentration is lower than 25%. 11 . The Li 2 O bearing metallurgical slag of claim 8 , wherein the CaO concentration is lower than 25%. 12 . The Li 2 O bearing metallurgical slag of claim 8 , wherein the sum of the Al 2 O 3 , SiO 2 , CaO, MnO, and Li 2 O concentrations is higher than 80%. 13 . A smelting process for producing the Li 2 O bearing metallurgical slag of claim 8 , the process comprising feeding lithium-bearing batteries, their components or their scraps to the smelter; and producing a metal-bearing alloy and the lithium bearing metallurgical slag. 14 . The process of claim 13 , wherein the total cobalt in the produced slag is lower than 0.5%.
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- What does patent US2019032171A1 cover?
- The present invention concerns a slag composition having a high lithium content, suitable as additive in the manufacture of end-user products, or for the economic recovery of the contained lithium. The lithium concentration indeed compares favorably with that of spodumene, the classic mineral mined for lithium production. This slag is characterized by a composition according to: 3%<Li 2 O…
- Who is the assignee on this patent?
- Umicore Nv
- What technology area does this patent fall under?
- Primary CPC classification C22B7/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jan 31 2019 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).