Method for continuous refining of a molten iron base metal
CA 1092829 A · Owner: Nippon Steel Corporation · Inventors: Matsuo, Teruo; Yakoozi, Teruo; Yoshii, Masataka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A molten iron is continuously refined in a refining vessel of a closed type using a flux composed chiefly of an alkali metal compound so as to decrease the content of P and S to a low level. The alkali metal compound is recovered from the evaporating material and slag generated in the refining and is again used in the refining, while such valuable elements as P V, etc. may be recovered. The molten iron thus refined can be converted into a steel of high quality in a known oxygen steel making furnace substantially by means of decarburization only and without the use of any flux or with a slight amount thereof. The practice of this invention makes it possible to substantially obviate a …
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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 January 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 6, 1998.
- 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.