Metallurgical apparatus – With means treating or handling gases exhausted by treating... – Having means to treat or handle gases evolving from rotary...
Patent
1995-02-21
1997-04-01
Kastler, Scott
Metallurgical apparatus
With means treating or handling gases exhausted by treating...
Having means to treat or handle gases evolving from rotary...
266173, 266213, 423483, C21B 722
Patent
active
056162960
ABSTRACT:
An industrial waste management facility (IWMF) for disposing of spent potlining includes a co-current gas-fired rotary kiln for containing a molten pool of spent potlining throughout the entire length of the rotary kiln from the inlet to the outlet, an ash quencher and cooler for receiving molten residue from the discharge end of the rotary kiln, a secondary combustion chamber, and a down-draft transition chamber for channeling discharge gases from the rotary kiln to the secondary combustion chamber. Pneumatic injection slingers feed and distribute spent potlining into the inlet end of the rotary kiln. A discharge dam provides a predetermined average depth of molten bath material in the rotary kiln over its entire length. A blended ratio of comminuted materials injected through the pneumatic injection slinger feeder is adjusted and controlled in response to signals received from a radiative optical kiln bath temperature measurement system. The IWMF recovers fluorides from discharge gases exiting the secondary combustion chamber, recycles the fluorides to the molten bath or pool of the rotary kiln, and collects and withdraws glass frit residue from the ash quencher and cooler.
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Byers R. Lee
Dinter-Brown Ludmila
Hittner Herman J.
Lees, Jr. John N.
Rierson David W.
Aluminum Company of America
Glantz Douglas G.
Kastler Scott
Topolosky Gary P.
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