Metallurgical apparatus – With means treating or handling gases exhausted by treating... – Having means to treat or handle gases evolving from rotary...
Patent
1996-12-17
1998-07-21
Andrews, Melvyn
Metallurgical apparatus
With means treating or handling gases exhausted by treating...
Having means to treat or handle gases evolving from rotary...
266173, 266213, 266248, 422209, B01J 810
Patent
active
057831424
ABSTRACT:
A kiln system for a process for treatment of aluminum dross residue (NMP) having available aluminum nitride (AlN) and/or free aluminum (Al) and/or aluminum chlorides (AlCl.sub.3) having a particle size within the range of 0.3 to 300 microns, i.e., "fines" to produce a high alumina lightweight aggregate is described. The process is characterized in that the NMP is fed into a rotating sealed kiln and heated to a temperature in the range of 2000.degree. to 4000.degree. F. while feeding oxygen or a mixture of oxygen and water into the kiln with less than about 20% of the total heat energy input for heating the NMP to a temperature between 2000.degree. and 4000.degree. F. being supplied from an external source. The process does not require prior agglomerization of the fines.
REFERENCES:
patent: 3111394 (1963-11-01), Weber et al.
Andrews Melvyn
Plasma Processing Corporation
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