Process for refining hot metal
CA 1234989 A · Owner: Thyssen Stahl Aktiengesellschaft · Inventors: Hoffken, Erich; Hammer, Rudolf; Florin, Wolfram
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for producing steel of low phosphorus content from hot metal of usual phosphorus content, in which the hot metal is simultaneously decarburised and dephosphorised in a single process step in a metallurgical vessel, in particular in a converter. The refining gas consisting predominantly or completely of technically pure oxygen is top-blown onto the melt and an inert stirring gas is blown into the melt particularly, from below. The vessel is charged with hot metal containing manganese in an amount of less than 0.2 % by weight. Lime is then added and refining is carried out down to a final phosphorus content of 0.005 % by weight or less in the steel at the …
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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 April 12, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 12, 2005.
- 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.