Method and apparatus for preheating scrap in a bucket

Details Method and apparatus for preheating scrap in a bucket Method and apparatus for preheating scrap in a bucket

1986-05-12

1987-05-19

Yuen, Henry C.

Heating

Processes of heating or heater operation

Controlling flame position or work atmosphere

432 57, 432242, 432152, 266901, F27D 700

Patent

active

046664025

ABSTRACT:
A method and a device for scrap preheating by means of hot steel furnace exhaust gases. A scrap bucket permits passage of gaseous medium therethrough and is closed by a cover with an exterior waterseal by providing an intermediate annular space having a controlled inlet for a purging medium which is connected to a pressure sensing means in the intermediate space. Purging medium is supplied to the intermediate space at a pressure not substantially less than the pressure in the inlet space in the bucket, so that all leakage is primarily the purging medium which flows outwardly to an outlet space. In a preferred embodiment the purging medium is recycled from the outlet space.

REFERENCES:
patent: 1892112 (1932-12-01), Moore et al.
patent: 2131591 (1938-09-01), Keith et al.
patent: 2971871 (1961-02-01), Beggs
patent: 4047886 (1977-09-01), Heyrand
patent: 4268977 (1981-05-01), Geiger
patent: 4326556 (1982-04-01), Deutsch et al.
patent: 4373911 (1983-02-01), Date et al.
patent: 4579523 (1986-04-01), Laiquddin et al.
patent: 4596526 (1986-06-01), Soliman

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