STEELMAKING LINE AND METHOD OF PRODUCING REDUCED IRON
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United States of America Patent
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Issued Date -
Jun 8, 2023
app pub date -
Jan 6, 2021
filing date -
Apr 27, 2020
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Abstract
Provided is a steelmaking line contributing to the realization of a method that achieves energy saving and CO2 emission reduction when producing reduced iron from iron oxide. The steelmaking line comprises: a blast furnace configured to reduce iron oxide; a reducing furnace configured to reduce iron oxide; a methane synthesizer configured to synthesize methane from blast furnace gas and/or furnace top gas, and hydrogen gas; a blower configured to blow the methane gas synthesized by the methane synthesizer into the blast furnace; a heat-reformer configured to heat or heat-reform the blast furnace gas and/or the furnace top gas, and the methane gas synthesized by the methane synthesizer, to generate reducing gas; a reducing gas blower configured to blow the reducing gas into the reducing furnace; and a supply path configured to supply the furnace top gas to the methane synthesizer and/or the heat-reformer.
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