Shaft furnace for reducing ores

Details Shaft furnace for reducing ores Shaft furnace for reducing ores

1980-01-29

1983-04-19

Andrews, M. J.

Metallurgical apparatus

Means for treating ores or for extracting metals

By means applying heat to work, e.g., furnace

75 34, F27B 920

Patent

active

043803288

ABSTRACT:
A shaft furnace for reducing ores with a gas, wherein the furnace is constructed to destroy the plug-flow state of ores in or above a plug-flow zone where a reduction ratio of the ores is 50 to 70%, in order to prevent the clustering by changing the plug-flow zone into a shear-flow zone. Further, the shaft furnace for reducing ores with a gas is so constructed that a hydraulic radius R (cm) of the furnace in the reduction zone in which the reduction ratio is greater than 50% is selected to be,

REFERENCES:
patent: 1289800 (1918-12-01), Jones
patent: 1448340 (1923-03-01), Fleischer
patent: 3558118 (1971-01-01), Jensen
patent: 3722869 (1973-03-01), Moore
patent: 3889864 (1975-06-01), Celada et al.
patent: 3957486 (1976-05-01), Sandoval et al.
Kaneko et al., Iron & Steel vol. 63, No. 14 pp. 2269-2277, 1977, Japan.
Kaneko et al., Iron & Steel vol. 64, No. 6, pp. 681-690, 1978 Japan.
Kaneko et al., Tran of Iron & Steel Ins of Japan vol. 18, pp. 421-428, 1978.
Kaneko SEA ISI Quarterly, pp. 19-32, 1978.

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