Melting furnace cover
AssigneeKaiser Aluminum & Chemical Corporation
InventorRonald F. Braschler
Life of this patent
Estimating the term…
Abstract
A cover for a top charged melting furnace includes an annular ring of downwardly extending blocks or modules of ceramic fiber insulating material. A plurality of T-bar anchors cooperate with the blocks to provide an anchor system for the annular ring. This anchor system allows the ring's attachment to the cover to be tightened in compensation for heat and compressionally related block size reductions. The anchoring system prevents the ring of blocks from sagging during cover elevation while not interfering with upward movement of the blocks during cover positioning on the furnace. The annular ring of blocks protects the main portion of the cover's insulation from damage and any damaged blocks in the ring are readily replaceable.
Claims17
A cover assembly for a top charged melting furnace, said cover assembly comprising:
- a generally planar metal framework;
- a layer of light weight insulating material secured to an undersurface portion of said framework;
- an annular downwardly extending ring of insulating blocks positioned generally at a peripheral portion of said framework;
- and
- means for securing said ring of blocks to said cover, said securing means permitting upward compressive movement of the insulating blocks in the annular ring.
A cover assembly for a top charged melting furnace, said cover assembly comprising:
- a generally planar disk shaped metal frame;
- a ceramic fiber insulating assembly secured to an undersurface portion of said metal frame;
- an annular ring of a plurality of ceramic fiber insulating blocks secured to said metal frame generally at a peripheral portion thereof;
- a plurality of spaced T-bar anchors for said plurality of blocks, each of said T-bars having a generally vertical shank which carries generally horizontal block engaging arm segments at a first end and a threaded second end which passes upwardly through said metal frame, said T-bars permitting upward compressive movement of the insulating blocks in the annular ring;
- and
- a cover band encircling said annular ring of blocks, each of said blocks being secured to said band.
Dependencies are inferred from the claim text.