Apparatus for recovery of metallics and non-metallics from spent

Details Apparatus for recovery of metallics and non-metallics from spent Apparatus for recovery of metallics and non-metallics from spent

1987-11-16

1989-09-26

Envall, Jr., Roy N.

Industrial electric heating furnaces

Arc furnace device

373 72, 373 76, 373 74, 373 78, 373 84, 373 81, H05B 700

Patent

active

048706558

ABSTRACT:
An electric arc furnace includes a crucible having a metal shell for recovering precious metals from spent material. The shell includes a metal tap hole and a slag door positioned above and opposite the metal tap hole. A removable swinging roof is provided above the crucible together with a plurality of electrodes for heating the spent material. Also, a cooling band circumscribes the crucible for cooling the metal shell. Conveyors are provided for distributing the spent material at a plurality of points located between the electrodes and the wall of the crucible. The crucible is tilted to allow the removal of the slag and metal.

REFERENCES:
patent: 2355095 (1944-08-01), Moore
patent: 3218050 (1965-11-01), Healy et al.
patent: 3429973 (1969-02-01), Carter et al.
patent: 3967048 (1976-06-01), Longenecker
patent: 4466104 (1984-08-01), Walzel
patent: 4543124 (1985-09-01), Vallomy
patent: 4639927 (1987-01-01), Uno et al.
Mannesmann Demag brochure, apparent publication date of 12/79.

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