Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1980-10-23
1984-02-28
Andrews, M. J.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
266139, 432 30, 16510421, C21B 914
Patent
active
044340044
ABSTRACT:
The present invention relates to a method and an apparatus for the recovery and recycling of heat from hot exhaust gases, specifically from exhaust gases in metallurgical processes and from warm gases having an exiting temperature of below about 800.degree. C. According to the preferred embodiment of the present invention, warm or hot exhaust fuel gases transfer their retained heat to the lower portions of vertically positioned, capillary-type action heat transfer pipes. Cold air is then directed past the upper portion of the heat pipes, thereby transferring the heat of the heat transfer pipes to the cold air. The now heated air gains further heat, prior to introduction into the blast furnace, by passing over, previously heated refractory gratings.
REFERENCES:
patent: 2163762 (1939-06-01), Noack et al.
patent: 2795497 (1957-06-01), Elvander
patent: 2859954 (1958-11-01), Grey
patent: 3148050 (1964-09-01), Von Bogdandy
patent: 3383200 (1968-05-01), Volk
patent: 3784370 (1974-01-01), Stephenson, Jr.
patent: 3884292 (1975-08-01), Pessolano et al.
patent: 4334861 (1982-06-01), Bricmont
Andrews M. J.
Mannesmann DeMag AG
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