Metallurgical apparatus – With control means responsive to sensed condition – With means responsive to condition of treated material
Patent
1974-10-29
1976-01-20
Lake, Roy
Metallurgical apparatus
With control means responsive to sensed condition
With means responsive to condition of treated material
13 8, 266 17, 266 20, F27B 910
Patent
active
039333426
ABSTRACT:
An ore processing furnace particularly adapted for processing ores at generally low temperatures ranging between 600.degree. Fahrenheit and 1200.degree. Fahrenheit: said furnace comprising an ore containing and processing chamber structure surrounded by a fire box and having ore heating tubes extending inwardly from the fire box to a central exhaust gas pipe whereby the ore heating tubes extend through a body of ore in said chamber; vapor collectors disposed above said ore heating tubes and extending upwardly through said chamber structure; vapor collectors above said ore heating tubes direct vapor upwardly through vapor conduits to an upper portion of said furnace in the area of an ore receiver at the upper portion thereof and the vapors are collected in a plenum which also exchanges heat to the ore for preheating it before it passes downwardly into an area around the ore heating tubes and a condenser communicating with the plenum condenses ore vapor to a liquid or a solid condition as may be appropriate.
Variable delivery fuel means is directed to furnish energy to burners in the lower portion of the fire box and the variable delivery air driving means is disposed to deliver air to said air insulating chamber whereby variable delivery of fuel and insulating air as well as variable drive of said augur provides for coordinating controls adapted to coordinate the processing of ore in said chamber structure and heat transferred to said vapor and to said insulating air is used to preheat ore in an upward area of said furnace at the receiver thereof. Additionally, hot gas from said central exhaust pipe heats a heat exchanger which is disposed in an area of an ore receiver at the upper portion of said furnace for exchanging heat to the ore and preheating it before it gravitates downwardly into an area of said ore heating tubes.
REFERENCES:
patent: 2287476 (1942-06-01), Hodson et al.
patent: 2550684 (1951-05-01), Fouquet
patent: 3876189 (1975-04-01), Jackson et al.
Bell Paul A.
Lake Roy
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