Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1980-10-17
1983-06-21
Andrews, M. J.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 26, 75 74, 75 77, 75 92, C22B 512
Patent
active
043892434
ABSTRACT:
A burner for the flash oxidation of particles of metal concentrates has three downwardly directed, concentrically mounted tubes each having a venturi nozzle on the discharge end thereof. Finely divided metal concentrates introduced into the annular space between the inner tube and the intermediate tube are accelerated by high pressure oxygen introduced through the inner tube to substantially the velocity of an oxidizing gas introduced into the annular space between the intermediate tube and the outer tube. Means are provided for adjusting the extent that the nozzles on the ends of the inner tube and intermediate tube extend into the nozzles on the ends of the intermediate and outer tubes respectively.
REFERENCES:
patent: 1073462 (1913-09-01), Banes
patent: 1163650 (1915-12-01), Fogler
patent: 1315460 (1919-09-01), Blackwell et al.
patent: 1888164 (1932-11-01), Freeman
patent: 3459415 (1969-08-01), Holeczy et al.
patent: 3463472 (1969-08-01), Worner
patent: 3889933 (1975-06-01), Jaquay
patent: 3892559 (1975-07-01), Quarm
Andrews M. J.
Dravo Corporation
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