Process and device for conditioning bulk material
CA 1290937 C · Owner: Kreft, Manfred · Inventors: Kreft, Manfred; Hillebrand, Wolfgang; Hederer, Hartmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Bulk material such as lignite hard coal, peat, waste, wood, clarifier sludge waste sludge, contaminated earth, catalysts, zeolites and filter cake containing vaporizable ingredients is conditioned by means of a vibrating plate conveyor divided into a heating zone and a drying zone, using an indirect heat exchange. The aim of the process is to condition bulk materials composed of particles of different sizes, ensuring a low energy consumption and minimizing the need for the required equipment. The bulk material is heated in the enclosed heating zone in the presence of the remaining steam pressure and at the final temperature under withdrawal of the vapour from this zone. In the downstream …
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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
- Granted October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- 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.