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:
Mar. 12, 1985
Filed:
Mar. 21, 1984
Rudolf Rinesch, Linz, AT;
Voest-Alpine Aktiengesellschaft, Linz, AT;
Abstract
There is disclosed a method of operating a metallurgical plant including a metallurgical vessel through the ceiling of which one or several hollow electrode(s) are guided in whose cavity a supply pipe is liftably and lowerably moveable. The plant may be operated as an electric arc furnace to melt down charge materials and fluxes, by retracting the pipe mouth to behind the mouth of the hollow electrode. Or, it may be operated as a plasma furnace to melt charge materials and fluxes upon increased energy supply, by displacing the mouth of the pipe to or slightly in front of the mouth of the hollow electrode and simultaneously supplying a plasma generating gas. And, finally, it may be operated as a refining converter, by displacing the pipe mouth to beyond the mouth of the hollow electrode and supplying oxygen-containing gas while interrupting the current supply.