Anode active material, anode comprising the same, secondary battery comprising the anode, and method for preparing the same
US-2024250240-A1 · Jul 25, 2024 · US
Recycling of materials containing organosilicon compounds
US11981575B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11981575-B2 |
| Application number | US-201917295057-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 5, 2019 |
| Priority date | Mar 5, 2019 |
| Publication date | May 14, 2024 |
| Grant date | May 14, 2024 |
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Abstract
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Silicon and silica values are obtained from recycled organosilicon products such as silicones, by introducing a recycle feed containing the organosilicon products into an electric furnace while producing metallurgical grade silicon from a silica source and a carbon source.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for producing metallurgical silicon, comprising: reacting in an electric furnace, a mixture comprising: a raw material mixture containing silicon dioxide and carbon, and a recycle feed containing organosilicon compounds, and recovering metallurgical grade silicon. 2. The process of claim 1 , wherein the recycle feed contains at least 50% by weight of organosilicon compounds. 3. The process of claim 1 , wherein the recycle feed is a particle mixture whose particle size parameter d 50 is at least 1 mm. 4. The process of claim 1 , wherein the silicon dioxide in the raw material mixture comprises quartz and/or quartzite. 5. The process of claim 1 , wherein the carbon in the raw material mixture comprises coke, petroleum coke, bituminous coke, charcoal, wood particles, or mixtures thereof. 6. The process of claim 1 , wherein the proportion of the recycle feed based on the sum of the raw material mixture and the recycle feed is not more than 20% by weight.
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Classifications
- C01B33/025Primary
with carbon or a solid carbonaceous material, i.e. carbo-thermal process · CPC title
Micrometer sized, i.e. from 1-100 micrometer · CPC title
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Frequently asked questions
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- What does patent US11981575B2 cover?
- Silicon and silica values are obtained from recycled organosilicon products such as silicones, by introducing a recycle feed containing the organosilicon products into an electric furnace while producing metallurgical grade silicon from a silica source and a carbon source.
- Who is the assignee on this patent?
- Wacker Chemie Ag
- What technology area does this patent fall under?
- Primary CPC classification C01B33/025. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 14 2024 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).