The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 1986
Filed:
Sep. 11, 1985
Erich Hoffken, Dinslaken, DE;
Wolfram Florin, Dinslaken, DE;
Rudolf Hammer, Dinslaken-Eppinghoven, DE;
Thyssen Stahl AG, Duisburg, DE;
Abstract
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 decarburized and dephosphorized 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 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 end of blowing, without a change of slag.