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Decarbonization process for carbothermically produced aluminum
US9068246B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9068246-B2 |
| Application number | US-33468708-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 15, 2008 |
| Priority date | Dec 15, 2008 |
| Publication date | Jun 30, 2015 |
| Grant date | Jun 30, 2015 |
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Abstract
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A method of recovering aluminum is provided. An alloy melt having Al 4 C 3 and aluminum is provided. This mixture is cooled and then a sufficient amount of a finely dispersed gas is added to the alloy melt at a temperature of about 700° C. to about 900° C. The aluminum recovered is a decarbonized carbothermically produced aluminum where the step of adding a sufficient amount of the finely dispersed gas effects separation of the aluminum from the Al 4 C 3 precipitates by flotation, resulting in two phases with the Al 4 C 3 precipitates being the upper layer and the decarbonized aluminum being the lower layer. The aluminum is then recovered from the Al 4 C 3 precipitates through decanting.
First claim
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What is claimed is: 1. A method comprising: (a) carbothermically preparing an aluminum alloy melt comprising Al 4 C 3 precipitates and aluminum metal; (b) separating the aluminum metal from the Al 4 C 3 precipitates, wherein the separating step comprises: introducing a gas into the aluminum alloy melt with a rotating disperser while the aluminum alloy melt is at a temperature of 700° C. to 900° C.; tamping the Al 4 C 3 precipitates on the surface of the aluminum alloy melt…
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- C22B21/02Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9068246B2 cover?
- A method of recovering aluminum is provided. An alloy melt having Al 4 C 3 and aluminum is provided. This mixture is cooled and then a sufficient amount of a finely dispersed gas is added to the alloy melt at a temperature of about 700° C. to about 900° C. The aluminum recovered is a decarbonized carbothermically produced aluminum where the step of adding a sufficient amount of the finely disp…
- Who is the assignee on this patent?
- Bruno Marshall J, Carkin Gerald E, Deyoung David H, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C22B21/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 30 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).