Heating – Processes of heating or heater operation – Including melting – vaporizing – sintering – expanding...
Patent
1988-02-11
1989-04-25
Yuen, Henry C.
Heating
Processes of heating or heater operation
Including melting, vaporizing, sintering, expanding...
266212, 266227, 110238, 432210, F27D 300, F27B 1902
Patent
active
048243620
ABSTRACT:
A method of operating a flash smelting furnace which includes a reaction shaft, a concentrate burner disposed at the top of the reaction shaft, a settler disposed with one end thereof connected to the lower part of the reaction shaft, an uptake disposed as connected to the other end of the settler, and at least one lance pipe disposed through the ceiling of the settler between the reaction shaft and the uptake and adapted to permit forced supply of at least powdery raw materials and a reaction gas into the melt in the settler includes the steps of blowing the powdery raw materials containing only a small amount of incombustible substances and the reaction gas into the reaction shaft through the concentrate burner, blowing powdery raw materials containing at least incombustible substances through the lance pipe, and employing means capable of at least retaining the heat of the melt.
REFERENCES:
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patent: 3527449 (1970-09-01), Worner
patent: 3901489 (1975-08-01), Suzuki et al.
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patent: 4200265 (1980-04-01), Berndt et al.
patent: 4226406 (1980-10-01), Frolov et al.
patent: 4401295 (1983-08-01), Yoshida
patent: 4457777 (1984-07-01), MacGregor et al.
Kimura Takayoshi
Mori Yoshiaki
Ojima Yasuo
Sumitomo Metal Mining Company Limited
Yuen Henry C.
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