Process of melting blast-furnace cast-iron

Details Process of melting blast-furnace cast-iron Process of melting blast-furnace cast-iron

1974-08-26

1979-10-02

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 24, 75 46, C21B 500

Patent

active

041697235

ABSTRACT:
A method and apparatus for the continuous pouring of pig-iron from blast furnaces is described. The method is based upon the provision of a reservoir external to the furnace and spaced therefrom but connected thereto by a passageway. The reservoir of molten metal permits the storage of an amount of molten metal at a level equal to or equilibrated to the level of molten metal within the furnace resulting from the hydrostatic head of liquid produced by the molten metal within the hearth, the slag resting upon the molten metal and the solid overburden of ore within the blast furnace. The reservoir permits the continuous pouring of molten metal from the furnace by adjustment of a pouring opening thereof to a level of the reservoir equal to the level of molten metal within the furnace. Semi-continuous operation is obtained by adjusting the level of the pouring opening to levels above the level of the liquid metal within the furnace. The volume provided for the reservoir should be ample to contain the liquid metal during periods when the pouring is discontinued. When the pouring is a continuous operation the volume of the reservoir may be limited to the volume of the passage connecting the reservoir with the blast furnace.

REFERENCES:
patent: 3549141 (1970-12-01), Zimmermann
patent: 3589699 (1971-06-01), Bogar
patent: 3626072 (1971-12-01), Haralampier

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