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VERSION:2.0
METHOD:PUBLISH
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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 17b
SUMMARY:The study of improving the energy efficiency in EAF by chemical energy input
DESCRIPTION:As we already know, the Carbon Neutrality is the most essential global issue since 2010s. Many heavy industries, especially Iron & Steel producing industries, are being forcing to achieve extremely low emissions of carbon dioxide. There are lots of studies for the carbon neutrality of the steel making process, but the process transition from BF-BOF to DRI-EAF is considered to be one of the most certain methods.
DRI makes it possible to manufacture the high-grade steels like AHSS by EAF process. It means, when we produce the same high-grade steel in the EAF process, carbon dioxide emission can be reduced as 40% to compare with BF-BOF process.
However, DRI consists of 10~20% of gangue and FeO so it needs much more energy input in EAF process. Therefore, it is important to enhance the EAF’s energy efficiency for Securing economic feasibility.
Oxygen injection from EAF’s side wall is one of the straight ways to improve the energy efficiency.
High speed oxygen injection can generate the gas jet into the EAF, and this jet has two main functions. First, Oxygen jet mutilates the side wall scrap for accelerate the scrap melting speed. Second, after the plat bath formation, oxygen jet refines the impurity, enhances the slag foaming for higher arc stability, and improves molten steel agitation for heat transfer. 
In this study, a method for setting the advanced oxygen input pattern was presented through index data that can accurately predict dissolution behavior. Also, It was verified that the oxygen jet improvement by the certain reformation of nozzle design.

CLASS:PUBLIC
DTSTART:20230615T094000
DTEND:20230615T100000
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