Method for two-stage melt reduction of iron ore

Details Method for two-stage melt reduction of iron ore Method for two-stage melt reduction of iron ore

1987-03-09

1989-07-18

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 40, 266156, C22B 1314

Patent

active

048490156

ABSTRACT:
A method for two-stage melt reduction of iron ore, in which iron ore is prereduced substantially to wustite and at the same time melted down in a melting cyclone, and then liquid hot metal is produced in an iron bath reactor connected to the outlet of the melting cyclone and receiving the melted wustite by adding carbonaceous fuels and oxidizing gas to the melt. The resulting reaction gas from the melt is afterburned, and the dust-laden, partly burned reaction gases from the iron bath reactor are accelerated and further afterburned by adding a hot blast with a temperature of 800.degree. C. to 1500.degree. C., and at least a portion of such accelerated, after burned reaction gases are introduced into the melting cyclone to reduce and melt fresh iron ore.

REFERENCES:
patent: 2745737 (1956-05-01), Oster
patent: 3028231 (1962-04-01), Klemantaski et al.
patent: 3264096 (1966-08-01), Agarwal et al.

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