Melting furnace for residues from waste incineration plants

Details Melting furnace for residues from waste incineration plants Melting furnace for residues from waste incineration plants

1995-05-24

1996-03-26

Kastler, Scott

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

Heated melting pot

266280, 266286, C21B 704

Patent

active

055014313

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.

REFERENCES:
patent: 2704419 (1955-03-01), Hewitt et al.
patent: 3148238 (1964-09-01), Willenbrock, Jr.
patent: 3258257 (1966-06-01), Wilson et al.
patent: 3764125 (1973-10-01), Horn et al.

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