Process for producing liquid raw iron or steel basic products and iron sponge and plant for implementing it
CA 2202918 C · Owner: Diehl, Jorg · Inventors: Kepplinger, Leopold Werner; Milionis, Konstantin; Siuka, Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a process for the production of molten pig iron or molten steel preproducts and sponge, iron from charging materials consisting of iron ore and if desired, fluxes, direct reduction of the charging materials to sponge iron is carried out in a fixed-bed reduction zone (12), the, sponge iron is melted in a meltdown gasifying zone (8) under supply of carbon carriers as, well as an oxygen-containing gas and a CO- and H2-containing reducing gas is produced, which is fed to the reduction zone (12) is reacted there and is drawn off as , an export gas and, the drawn-off export gas is subjected to CO2 elimination and for the production of sponge iron, is along with part of the reducing gas …
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 October 12, 1995 and granted December 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 12, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 12, 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.