Method for producing molten metal from powder state ore

Details Method for producing molten metal from powder state ore Method for producing molten metal from powder state ore

1990-05-04

1992-07-21

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75445, 75623, C22B 514

Patent

active

051319420

ABSTRACT:
A method and apparatus for producing molten metal from powder state ore through smelting process to be performed in a shaft furnace, utilized the reducing material having grain size greater than that n-times of the gas flow velocity corresponding grain size to charge from the top of a shaft furnace for forming fluidized bed at the upper section of the furnace and a reducing material filled section below the fluidized bed. The method and apparatus for smelting the powder state ore also takes the reducing material having smaller grain size to be blown into the furnace through tuyeres.

REFERENCES:
patent: 3892538 (1975-07-01), Seth
patent: 4317677 (1982-03-01), Weber et al.
patent: 4588437 (1986-05-01), Kepplinger et al.
patent: 4708736 (1987-11-01), Hauk et al.
patent: 4725308 (1988-02-01), Kepplinger
patent: 4728360 (1988-03-01), Hauk et al.

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