Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal
Patent
1995-03-03
1996-09-10
Kastler, Scott
Specialized metallurgical processes, compositions for use therei
Processes
Producing or treating free metal
266142, 266172, 266176, C21B 1300
Patent
active
055542069
ABSTRACT:
A method of and apparatus for charging fine-grained ore into a reactor pressure vessel through which process gas flows. The heated ore at first is introduced into a conveying pressure vessel, is pressurized within the same by compressed gas and subsequently is conveyed into the reactor pressure vessel through a conveying duct by aid of the compressed gas. In order to ensure favorable utilization of the reactor pressure vessel under uniform stress and to safeguard troublefree progression of reduction while directly charging the ore, a portion of the ore is introduced into at least one further conveying pressure vessel and is pressurized within the same also by compressed gas. Charging of the ore into the reactor pressure vessel is effected continuously by alternately feeding once from the one conveying pressure vessel and subsequently from the other conveying pressure vessel. The compressed gas is taken from the process gas as a quantitative or as a component portion of the process gas and is fed back to the same along with the ore.
REFERENCES:
patent: 4207093 (1980-06-01), Pastorino
patent: 4377278 (1983-03-01), Barmann
patent: 4437796 (1984-03-01), Ulveling et al.
patent: 5082251 (1992-01-01), Whipp
patent: 5129630 (1992-07-01), Ariyama et al.
Journal of Metals, Apr. 1957, pp. 586-590, "The H-Iron Process".
Czermak Karl
Milionis Konstantin
Tessmer Gero
Whipp, Jr. Roy H.
Brifer International Ltd.
Kastler Scott
Voest-Alpine Industriean-lagenbau GmbH
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