Method for ironmaking by smelting reduction in stir-generated vortex

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United States of America Patent

PATENT NO 11091816
APP PUB NO 20190230746A1
SERIAL NO

16318020

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Abstract

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A method for ironmaking by smelting reduction in a stir-generated vortex includes: (1) placing a pig iron in an induction furnace, and then heating the pig iron to a molten state to form a molten iron, and maintaining the molten iron to be greater than or equal to 1450° C.; (2) stirring a center of the molten iron to form a vortex with a height-to-diameter ratio of 0.5-2.5, and continuously performing stirring; (3) mixing and grinding on an iron-containing mineral, a reducing agent and a slag-forming agent in a mass ratio of 1:(0.1-0.15):(0.25-0.4) to obtain a powder mixture, spraying and blowing the powder mixture to a center of the vortex, performing a reduction reaction, and stopping the stirring after the molten iron and molten slags are obtained, wherein a waste gas is produced; and (4) discharging the molten iron and the molten slags respectively, and exhausting a treated waste gas.

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Patent Owner(s)

Patent OwnerAddress
NORTHEASTERN UNIVERSITY110819 NO 3 LANE HEPING ROAD HEPING DISTRICT SHENYANG LIAONING 11 SHENYANG CITY LIAONING PROVINCE 110819

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dou, Zhi he Shenyang, CN 3 2
Liu, Yan Shenyang, CN 664 5733
Lv, Guo zhi Shenyang, CN 3 2
Zhang, Ting an Shenyang, CN 4 2
Zhang, Zi mu Shenyang, CN 1 0

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