Method and apparatus for the reduction of ores, especially iron

Details Method and apparatus for the reduction of ores, especially iron Method and apparatus for the reduction of ores, especially iron

1975-10-01

1977-01-04

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 38, 75 40, 75 48, 75 51, C21C 552

Patent

active

040010082

ABSTRACT:
A method of reducing iron ores in a shaft furnace. The furnace has an enlarged lower portion which is joined to an upper portion by an intermediate portion of reduced cross-sectional area. Iron ores are introduced in the upper portion of the furnace without addition of fuel (such as coke), and hot reducing gases are produced outside the furnace through partial combustion. The hot reducing gases and carbon in powder form are introduced into the lower portion of the furnace in a generally downward direction toward the iron bath in the lower portion of the furnace, and heat produced by electric energy is supplied to the furnace lower portion. Exceptionally accurate control is provided of the amount of carbon to the iron ore is very rapid.

REFERENCES:
patent: 1934082 (1933-11-01), Moll et al.
patent: 3151974 (1964-10-01), Rheinlander
patent: 3236628 (1966-02-01), Bogdandy

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