Electrolytic cell effluent treatment method and device for the production of aluminum, with cooling by injection
CA 2509983 C · Owner: Vanvoren, Claude · Inventors: Couzinie, Elisabeth; Girault, Guillaume; Vanvoren, Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method and installation for treating gaseous effluents produced by at least one electrolytic cell (1). According to the invention the effluents are conveyed through at least one conduit (11) towards the treatment means (12-19) consisting of at least a reactor (12) which can extract the fluorinated products contained in the effluents by means of reaction with powder aluminium (16) and a separator device (13) which can separate the aluminium originating from the reactor (12) and the residual gas fraction and which comprises filtration means (14). According to the invention before being treated, the effluents are cooled by means of (i) the injection of droplets of a …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed December 15, 2003 and granted July 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 15, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.