Electrolysis device, electrolysis system, and electrolysis method for alternating current induction power supply
US-2024425999-A1 · Dec 26, 2024 · US
Method of producing aluminium in an electrolysis cell
US8961773B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8961773-B2 |
| Application number | US-99766109-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 5, 2009 |
| Priority date | Jun 16, 2008 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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Abstract
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The invention relates to a method of producing aluminum in an electrolysis cell, which includes setting up a succession of control periods of duration T, identifying perturbative tending operations on the cell that can introduce superfluous alumina in the electrolytic bath, noting the performance of the perturbative tending operations, determining a regulation feed rate B(k′) for each control period k′ and setting a specified feed rate SR(k′) equal to M(k′)×B(k′), where M(k′) is a predetermined modulation factor that modulates the regulation feed rate B(k′) so as to take into account a reduction of the needs of the cell induced by the superfluous alumina. The method of the invention makes it possible to significantly reduce the rate of occurrence of anode effects.
First claim
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The invention claimed is: 1. Method of producing aluminium in an electrolysis cell, said cell comprising a pot, a plurality of anodes and at least one alumina feeder device capable of delivering amounts of alumina powder in said cell, said cell containing an electrolytic bath comprising alumina dissolved therein, said anodes and electrolytic bath being covered with a protecting layer made from a powdery material containing alumina, said method including: circulating an electrical…
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- What does patent US8961773B2 cover?
- The invention relates to a method of producing aluminum in an electrolysis cell, which includes setting up a succession of control periods of duration T, identifying perturbative tending operations on the cell that can introduce superfluous alumina in the electrolytic bath, noting the performance of the perturbative tending operations, determining a regulation feed rate B(k′) for each control p…
- Who is the assignee on this patent?
- Fardeau Sylvain, Sulmont Benoît, Rio Tinto Alcan Int Ltd
- What technology area does this patent fall under?
- Primary CPC classification C25C3/20. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 24 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).