Melting furnace for residues from waste incineration plants
US5501431A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 1995 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | May 24, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23M5/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.