Process for producing sintered iron ore having high reducibility

Details Process for producing sintered iron ore having high reducibility Process for producing sintered iron ore having high reducibility

1979-11-20

1982-03-02

Lewis, Michael L.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

266 84, C22B 120

Patent

active

043176763

ABSTRACT:
This invention relates to an improvement of the process for producing sintered iron ore with a Dwight-Lloyd machine, and it provides a process for producing sintered ore with high reducibility by sintering a raw material mix of a moisture content between 4.5 and 8.0% on the pallets of said machine, which comprises drying the surface layer of said mix on the pallets to discharge 3 to 25%, preferably 5 to 20%, of the moisture content of the mix from the sintering system, and thereafter igniting the surface layer of the mix to sinter the same with air or gas sucked downward.

REFERENCES:
patent: 2750272 (1956-06-01), Lellup
patent: 2750273 (1956-06-01), Lellup
patent: 2914395 (1959-11-01), Davies
patent: 2931718 (1960-04-01), Greaves
patent: 3249422 (1966-05-01), Sironi et al.
patent: 3257195 (1966-06-01), Schwarz
Ball, D. F. et al., "Use of Preheated Air in Sintering", Blast Furnace Coke and Raw Materials Conference 1960, pp. 409-428, (4/60).
Wenzel, W. et al., "Special Sintering Method with Previous Heat Treatment and Use of Reactive Fuels", Stahl U. Eisen, vol. 97, pp. 309-314, (1977).
Japanese Steel Association, Tekko Binran, 3rd Edition, Maruzen Co., Ltd., one page unnumbered (1979).
Ball, D. F., Agglomeration of Iron Ores, American Elsevier Publishing Co., Inc., p. 312, TN401B3, (1973).

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