METHOD OF OPERATING BLAST FURNACE AND BLAST FURNACE ANCILLARY FACILITY
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United States of America Patent
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Feb 2, 2023
app pub date -
Dec 14, 2020
filing date -
Dec 14, 2020
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Abstract
Provided is a method of operating a blast furnace, including generating a regenerative methane gas using a blast furnace by-product gas, and blowing a blast gas and a reducing agent into the blast furnace from a tuyere, in which the blast gas is oxygen gas, the regenerative methane gas is used as at least part of the reducing agent, and the oxygen gas and/or the regenerative methane gas is preheated before being blown into the blast furnace from the tuyere.
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