Installation for thermal treatment of suspended powder substances, and use for flash calcining of mineral, in particular clayey, substances
CA 2292744 A1 · Owner: Demeter Technologies · Inventors: Valmalette, Pierre; Raynaud, Gilbert; Pons, Olivier
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns an installation for quick thermal treatment of suspended powder substances in particular for flash calcining of mineral substances. Said installation comprises modules (M1 M2, M3) advantageously arranged in mobile units including means supplying powder substances a combustion chamber (21) wherein the substances are introduced suspended in a hot air flux and a cooling assembly (M3) where the calcined substances are recuperated to pre-heat the combustion air. The substances are pneumatically transported in the heated air downstream of the supplying means via a pre-heating device (17) up to the combustion chamber (21).
Read the whole patent
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 June 5, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 5, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2020.
- 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.