Heat treatment of coal
CA 1135652 A · Owner: Didier Engineering G.M.B.H. · Inventors: Wagener, Dietrich; Fach, Horst; Ergun, Hayri
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to heat treatment of coal before coking or gasification, especially the drying or preheating of milled coal using, microwave radiation preferably in the range 20 to 3,000 MHz. The invention extends to a device for carrying out such a process. A suitable device comprises a storage bunker, means defining at least one treatment zone means, for generating microwaves in the treatment zone and a conveyor for transport-, ing the coal from the storage bunker to an oven via the treatment zone. The invention also extends to a feed chute or a coal bunker equipped with electrodes to produce microwaves which can be used as a treatment zone.
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
- Granted November 16, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 16, 1999.
- 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.