Hot metal desulphurizing and dephosphorizing process
CA 1285392 C · Owner: Centro Sperimentale Metallurgico S.P.A. · Inventors: Sironi, Giovanni
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
When tapping a blast furnace the slagged hot, metal is treated with solid or even gaseous agents to ensure good desulphurization and dephosphorization for, instance to permit mass production of microalloyed steels with high technological properties. In this way it is possible to stay with the presently accentuating trend of regarding the converter simply as a decarburizing reactor, while performing all other treatments in the ladle before or after the converter. There are also major advantages compared with the known torpedo car treatments of hot metal.
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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 July 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 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.