Fluidized bed type reduction apparatus for iron ore particles and method for reducing iron ore particles using the apparatus
CA 2184009 C · Owner: Research Institute Of Industrial Science & Technology · Inventors: Kim, Yong Ha; Lee, Il Ock; Jung, Bong Jin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reduction apparatus and a method for efficient reduction of fine iron ores of wide grain range comprising serially arranged a drying/preheating furnace a first reducing, furnace for prereduction and a second reduction furnace for final reduction each working, with bubbling fluidized bed and being connected each to a cyclon for capturing iron ore dust contained in the exhaust gases, having each a tapered shape smoothly expanded outwards and thus considerably decreasing elutriation of fine particles increasing the, reduction efficiency and enhancing the utilization of the reducing 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 December 28, 1995 and granted May 30, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 28, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 28, 2017.
- 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.