Magnetite-based sintered ore and method of producing same
AssigneeKorea University Research and Business Foundation
InventorsJoonho Lee, Joon Seok Oh
Life of this patent
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Abstract
This invention relates to magnetite-based sintered iron ore wherein a magnetite ore powder, which is not currently utilized owing to its low reducibility index among iron ore materials serving as a main material in iron-making processes, is improved so as to have a high reducibility index, and to a method of manufacturing the same.
Claims14
A magnetite-based sintered iron ore, which is manufactured by irradiating a magnetite ore or a magnetite ore mixture with a microwave and has a reducibility index at a reduction rate of 0.7%/min or more in a 1000° C. 40% CO-60% N2 gas atmosphere.
A method of manufacturing a magnetite-based sintered iron ore, comprising:
- a) compacting a magnetite ore powder or a magnetite ore powder mixture into a magnetite ore lump using a pressure of 30 to 500 MPa;
- and
- b) sintering the magnetite ore lump prepared in a) at a temperature of 1100° C. or above through microwave irradiation.
Dependencies are inferred from the claim text.