Preheating mechanism for source metal for melt

Details Preheating mechanism for source metal for melt Preheating mechanism for source metal for melt

1986-04-28

1987-07-21

Yuen, Henry C.

Heating

Having condition responsive control

Of cooling, dilution, withdrawal, bypass or circulation of...

432 57, 432 49, 432 72, 432157, F27D 1900

Patent

active

046815350

ABSTRACT:
A preheating mechanism for preheating a source metal for melt includes a combination of independent combustion and preheating devices. The mechanism also includes a high-temperature gas conduit for connecting the combustion device and the preheating device, a low-temperature gas conduit for connecting the preheating device and an exhaust gas chimney, a branch pipe branched from the low-temperature gas conduit and connected to the high-temperature gas conduit, and a short-cut gas conduit for connecting a conduit portion at a combustion device side from a coupling portion between the high-temperature gas conduit and the branch pipe to a conduit portion at an exhaust gas chimney side from a branch portion between the low-temperature gas conduit and the branch pipe. A diluting mechanism is arranged in the short-cut gas conduit. A valve with a variable motor is arranged in the branch pipe. A temperature sensor is arranged between the preheating device and the coupling portion between the high-temperature gas conduit and the branch pipe. The valve controls gas flow in the branch pipe in response to a signal from the temperature sensor.

REFERENCES:
patent: 3379424 (1968-04-01), Dell'Agnese et al.
patent: 3554508 (1971-01-01), Dell'Agnese
patent: 3837791 (1974-09-01), Schoch et al.
patent: 4375958 (1983-03-01), Date et al.

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