METHOD FOR MANUFACTURING MOLTEN IRON WITH ELECTRIC ARC FURNACE
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United States of America Patent
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Issued Date -
Dec 22, 2022
app pub date -
Oct 14, 2020
filing date -
Oct 14, 2020
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Abstract
A method for manufacturing molten iron by melting a cold iron source in an electric arc furnace having a carbonaceous material-injecting device. The method includes, in the carbonaceous material-injecting device, while a carbonaceous material is injected with a carrier gas through a central portion of the carbonaceous material-injecting device, injecting a fuel and a combustion-supporting gas through respective outer peripheral portions of the carbonaceous material-injecting device. The carbonaceous material injected through the central portion passes through a cylindrical combustion flame generated by a combustion reaction between the fuel and the combustion-supporting gas and is injected into molten slag and molten iron.
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