Heating – Tumbler-type rotary - drum furnace – Having brick-type lining
Patent
1998-10-21
1999-11-16
Walberg, Teresa
Heating
Tumbler-type rotary - drum furnace
Having brick-type lining
373 75, F27D 108
Patent
active
059846720
ABSTRACT:
A ceramic fiber block includes a welding stud disposed between two ceramic fiber layers centrally positioned in the ceramic fiber block. The welding stud includes a base stud which at its one end to be welded to a furnace wall and having a ceramic ferrule and at the other end formed with screw threads, an electrode rod having screw threads at its one end in the ceramic fiber block, and first and second nuts connecting the screw threaded ends of the base stud and electrode rod. The ceramic fiber block further includes an anchor bar between the centrally positioned ceramic fiber layers so as to perpendicularly intersect the welding stud, a pair of piercing rods piercing the whole ceramic fiber layers, a ferrule temporarily fixing agent such as an adhesive for temporarily fixing the ferrule to the end of the base stud, and a pair of platforms associated with the piercing rods for enabling hanger mounting studs to be provided at a predetermined interval, the hanger mounting studs provided with hangers for electric furnace heating elements. After the distal end of the base stud is melted and urged against the furnace wall through an electrode rod by means of a welding machine, so that the pair of piercing rods are urged toward the furnace wall through the anchor rod engaging the welding stud, thereby firmly fixing the ceramic fiber block in a prestressed condition to the furnace wall.
REFERENCES:
patent: 4088825 (1978-05-01), Carr
patent: 4154975 (1979-05-01), Sauder
patent: 4569659 (1986-02-01), Olsen et al.
patent: 5218615 (1993-06-01), Wieland et al.
patent: 5280495 (1994-01-01), Havas et al.
patent: 5624256 (1997-04-01), Pfeiffer et al.
Taki Industries Co., Ltd.
Walberg Teresa
Wilson Gregory A.
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