Furnace for expanding mineral ores

Details Furnace for expanding mineral ores Furnace for expanding mineral ores

1980-10-10

1982-03-09

Camby, John J.

Heating

With heating gas conveying, agitating, scattering or...

252378P, 432102, F27B 1500, F27D 108

Patent

active

043186912

ABSTRACT:
A high temperature furnace adapted to expand mineral ores such as vermiculite, perlite and the like. The furnace preferably includes an upright, vertically oriented frame adapted to support an elongated furnace tube into which mineral ore is delivered for expansion. Raw ore may be routed through a preheating system including a plurality of vertically spaced-apart, inclined baffles removably disposed within a preheating enclosure secured to the furnace. A preheater bypass system is included to facilitate use of the furnace with vermiculite. Flame control and mineral waste control are preferably effectuated with a flame guide adapted to be variably positioned intermediate a lower blast nozzle and a furnace tube heat input orifice. A plurality of thermal expansion couplings and supports are utilized to compensate for thermal expansion.

REFERENCES:
patent: 551725 (1895-12-01), Greenwalt
patent: 685336 (1901-10-01), Leroy et al.
patent: 2536742 (1951-01-01), Hammond
patent: 2572484 (1951-10-01), Howle et al.
patent: 3097832 (1963-07-01), Murdock et al.

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