Furnaces – With fuel treatment means – Preliminary refuse treatment means
Patent
1978-01-05
1979-03-27
Envall, Jr., R. N.
Furnaces
With fuel treatment means
Preliminary refuse treatment means
110335, 266280, F27D 102
Patent
active
041467426
ABSTRACT:
An electric furnace roof having spaced-apart, inner and outer, cooling-fluid-circulating refractory tile or block-carrying metal ring structures is provided with an upwardly offset, outwardly extending, roof ledge segment which, with an aligned, cooperating furnace side wall segment defines a smoke hole open portion to the furnace. The side wall segment of the furnace wall, with the roof segment, also provides an inner smoke chest that is open to the smoke hole portion, and has an upwardly enlarged funnel shape, and is metal reinforced. The roof segment is provided with a cooling water circulating loop system which may be independent of cooling means supplying inner and outer, radially spaced-apart, metal ring structures of the roof. The roof is adapted to be raised and lowered as a unit in a conventional manner with respect to the furnace wall and to be swung to one side thereof for scrap-charging and maintenance purposes. The inner ring structure provides a support or mounting for a roof crown portion, and the inner and outer ring structures provide a support or mounting for a brim portion thereof.
In one embodiment, refractory tile members are carried in a suspended relation in the roof crown portion, and in another embodiment, refractory tile members are carried in a sprung relation therewithin. In the one embodiment, the inner ring structure carries a liftable inner ring which is adapted to rest on an overhead frame and to carry the crown portion of the roof.
REFERENCES:
patent: 2742023 (1956-04-01), Reintjes
patent: 3018096 (1962-01-01), Rydinger
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