Process and device for the extraction of valuable substances

Details Process and device for the extraction of valuable substances Process and device for the extraction of valuable substances

1994-11-15

1996-03-19

Hoang, Tu

Industrial electric heating furnaces

Arc furnace device

Plural furnace units

373 9, 373 81, 75 103, 75 104, F27D 2300

Patent

active

055008704

ABSTRACT:
A process and melting furnace unit are provided for extracting valuable substances by reducing oxygen-bound metals which process includes exposing a charge in a first reaction zone of a furnace vessel to heat energy so that a liquid slag floats on a metal melting bath, feeding the metal bath to a second reaction zone of the furnace vessel where the slag comes intimately into contact with a reducing agent, and feeding additional heat energy to the melt in the second reaction zone to prevent hardening.

REFERENCES:
patent: 1522665 (1925-01-01), Wright
patent: 2254809 (1941-09-01), Tharaldsen
patent: 3555164 (1971-01-01), Kostin
patent: 3610795 (1971-10-01), Antoine
patent: 4740989 (1988-04-01), Steipe et al.
patent: 5406579 (1995-04-01), Vallomy

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