Shaft furnace arrangement for the direct reduction of iron ores

Details Shaft furnace arrangement for the direct reduction of iron ores Shaft furnace arrangement for the direct reduction of iron ores

1985-07-31

1987-10-13

Andrews, Melvyn J.

Metallurgical apparatus

Means for treating ores or for extracting metals

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

75 34, F27B 116

Patent

active

046993614

ABSTRACT:
There is disclosed a shaft furnace for the direct reduction of iron ores. It includes a gas feed device arranged centrally in the bottom of the shaft furnace in the longitudinal axis of the shaft furnace and having a central cavity. From the cavity, a plurality of gas outlets for the reduction gas, superposed in stages and passing through the gas feed device in its upper part, lead into the interior of the shaft furnace. In order to provide a shaft furnace with which operational failures caused by the gas feed device are prevented and with which the gas feed device is subject to little wear so that it need be exchanged in large time intervals only, the gas feed device is designed as a double-shelled hollow body. The shell interspace of the hollow body is connected to at least one supply duct and at least one discharge duct for a coolant.

REFERENCES:
patent: 1003628 (1911-09-01), Mathesius
patent: 3450396 (1969-06-01), Pantke et al.
patent: 4032123 (1977-06-01), Cruse, Jr. et al.
patent: 4256290 (1981-03-01), Coccia

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