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. 26, 1996
Filed:
May. 24, 1995
Markus Pfister, Do/ ttingen, CH;
Christian Wieckert, Seon, CH;
ABB K.K., Tokyo, JP;
Abstract
A melting furnace for melting residues from refuse incineration plants, in particular filter dust melting furnaces, contains a furnace substructure and a furnace superstructure lined with different refractive material compositions. The lining in the substructure, the melting region, is a refractory material which, in addition to other metal oxides, contains 10-70% wt. % Cr.sub.2 O.sub.3. The lining in the superstructure, the gas atmosphere region, is a refractory material which contains 80 wt. % or more of MgO and is low in Cr.sub.2 O.sub.3 or is virtually Cr.sub.2 O.sub.3 -free. A furnace constructed in this manner exhibits long endurance and does not form toxic chromium compounds in the chromium-free gas region.