Method and apparatus for dispersing alumina in a molten electrolyte contained in an aluminum reduction cell
CA 2424388 A1 · Owner: Desclaux, Paul · Inventors: Desclaux, Paul; Collard, Marcel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for supplying and dispersing alumina into a molten electrolyte in an aluminum reduction cell is disclosed. The apparatus comprises:, (a) an alumina feeder for charging a predetermined amount of alumina into a pre-selected area on a crust of solidified electrolyte; (b) a crust breaker being, adapted to push the charged alumina into the molten electrolyte while breaking the crust; and (c) a gas supplying device for blowing a compressed gas beneath the surface of the molten electrolyte through a gas nozzle such that the blown compressed gas causes agitation in the molten electrolyte to accelerate dispersion and dissolution of the alumina into the molten electrolyte. The gas …
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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 April 3, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 3, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 3, 2025.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.