System and method of processing electric arc furnace dust

Details System and method of processing electric arc furnace dust System and method of processing electric arc furnace dust

2007-06-05

2007-06-05

Van, Quang (Department: 3742)

Industrial electric heating furnaces

Plural diverse heating means

C373S008000, C075S479000, C208S132000

Reexamination Certificate

active

10950260

ABSTRACT:
A method of processing electric arc furnace dust includes the steps of preheating a portion of electric arc furnace dust to a temperature of at least 170 degrees centigrade by convection heating to form a preheated dust. The preheated dust is further heated by microwaves until a zinc in the preheat dust vaporizes to form a metal vapor and a residue. The metal vapor is then condensed.

REFERENCES:
patent: 5046435 (1991-09-01), Kugler
patent: 5421880 (1995-06-01), Young
patent: 5906671 (1999-05-01), Weinwurm et al.
patent: 6722593 (2004-04-01), Dobozy
patent: 2003/0209469 (2003-11-01), Kivlen
patent: 2001330224 (2001-11-01), None

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