Furnace refractory extraction system and method

Details Furnace refractory extraction system and method Furnace refractory extraction system and method

1992-02-14

1994-01-18

Reynolds, Bruce A.

Industrial electric heating furnaces

Induction furnace device

Coreless

373122, 373138, 373151, 373158, 432 3, 432 24, H05B 622

Patent

active

052804950

ABSTRACT:
A furnace refractory extraction system and method includes a selectively removable bottom portion which is attached to a refractory extraction device associated with a container for drawing the refractory lining of a coreless induction furnace into the container. A plug portion in the furnace bottom is selectively removable to provide access to a bottom wall of the refractory lining. An opening is made in the bottom wall of the lining through which an extractor shaft is inserted and then attached to the removable bottom portion of the furnace bottom. The other end of the shaft is attached to a piston and cylinder assembly associated with the container at the open end of the furnace. When the piston and cylinder assembly is powered, the lining is drawn into the container.

REFERENCES:
patent: 2077169 (1937-04-01), Green
patent: 3984613 (1976-10-01), Reese
patent: 4277638 (1981-07-01), Stenkvist
patent: 4334857 (1982-06-01), Smitka et al.
patent: 4403955 (1983-09-01), Sarno
patent: 4666681 (1987-05-01), Ferrand et al.
patent: 4700355 (1987-10-01), Guido
patent: 4755137 (1988-07-01), Barbe et al.

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