Metallurgical apparatus – With means treating or handling gases exhausted by treating... – By condensing and collecting a volatile constituent
Patent
1978-03-09
1978-12-05
Dost, Gerald A.
Metallurgical apparatus
With means treating or handling gases exhausted by treating...
By condensing and collecting a volatile constituent
266159, C22B 4300, F27B 100
Patent
active
041282310
ABSTRACT:
An indirectly fired vertical shaft furnace suitable for use as a volatilizing furnace for recovering metals from their ores, a crop drying or roasting furnace or a heating furnace is comprised of two concentric cylindrical metal shells each of which is closed at the upper end. The outer shell is completely lined with a lightweight insulating material and the lower end of the shell is connected to the upper end of an annular fire chamber having an upwardly open U-shaped cross-section cast from firebrick material. Two tangentially directed burners extend into the chamber to produce a swirling action of the hot gases in the heating chamber between the two cylindrical members. Conduits are provided through the top walls of both cylindrical member for withdrawing the material from the bottom of the central chamber. A vapor collector is coaxially located within the central chamber and has spirally arranged apertures for collecting vapors under transverse channels extending radially outwardly from the conduit across the central chamber above each of the apertures. Additional conduits are provided at the bottom of the central chamber for introducing air into the central chamber and collector conduit and additional conduits are provided at the top of the central chamber for removing vapors from the central chamber and the collecting conduit.
REFERENCES:
patent: 1213347 (1917-01-01), Fink
patent: 2809026 (1957-10-01), Bagley
patent: 3876189 (1975-04-01), Jackson et al.
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