Melting starting material in a cupola furnace

Details Melting starting material in a cupola furnace Melting starting material in a cupola furnace

2010-01-07

2011-12-06

Wyszomierski, George (Department: 1733)

Metallurgical apparatus

Means for treating ores or for extracting metals

By means applying heat to work, e.g., furnace

C266S044000, C266S217000, C266S225000

Reexamination Certificate

active

08071013

ABSTRACT:
The invention relates to operating a shaft furnace, in particular a cupola furnace, for melting starting material, wherein the shaft furnace is heated by combustion of a solid fuel and wherein an injection gas, which has an oxygen portion of more than 21%, is injected into the shaft furnace. The shaft furnace is heated by means of at least one burner, wherein a gaseous or liquid fuel and a gaseous oxidant, which encompasses an oxygen portion of more than 21%, is supplied to the burner.

REFERENCES:
patent: 3547624 (1970-12-01), Gray
patent: 3958919 (1976-05-01), Kjell-Berger
patent: 4691899 (1987-09-01), Hayashi et al.
patent: 5346183 (1994-09-01), Westley
patent: 0 762 068 (1997-03-01), None
patent: 0 793 071 (1997-09-01), None
patent: 1 325 950 (2003-07-01), None
patent: 1 997 915 (2008-12-01), None
European Search Report, May 19, 2009.

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