Apparatus for heating flowing material containing solids
CA 2380533 A1 · Owner: Outokumpu Oyj · Inventors: Naappa, Tapio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an apparatus for the heating of flowing material containing finely divided solids, such as concentrate slurry containing precious metals and/or precious minerals up to a desired temperature range, for instance the temperature range applied in a treatment process of said material, said apparatus comprising means for feeding and removing the medium used for heating as well as means for feeding and removing the material to be heated in and out of the apparatus. According to the invention both the , flowing space of the material to be heated and the flow channels (3) of the heating medium are installed in an essentially vertical position so that the , material to …
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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 July 21, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 21, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 2022.
- 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.