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:
Oct. 15, 1996
Filed:
Mar. 28, 1994
Heribert Konig, Duisburg, DE;
Heinz Stark, Essen, DE;
Mannesmann Aktiengesellschaft, Dusseldorf, DE;
Abstract
A process and low-shaft furnace for disposing of filter material. The material to be disposed of is charged via a charging device onto and/or into a slag bath in the furnace. Simultaneously, additives comprising fluxing agents, slag-making constituents and reducing agents are introduced into the slag via a separate immersion lance. Finally, during the introduction of the additives the variables forming the electrical resistance, essentially the electrodiameter, center distance between the electrodes, level of the slag bath, and the immersion depth of the electrodes in the bath are adjusted so that 70% of the electrical energy is introduced between the electrodes and 30% of the electrical energy is introduced between the electrodes and the metal bath on the hearth bottom.