Method for manufacturing steel
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United States of America Patent
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Jul 24, 2001
Grant Date -
N/A
app pub date -
Jun 4, 1999
filing date -
Jun 10, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and a plant for manufacturing steel in an electric steel furnace wherein the electric steel furnace is charged with at most 70% scrap and with at most 60% liquid pig iron obtained in a mini-blast furnace, and optionally with additional iron carriers, and wherein the mini-blast furnace is operated for producing the pig iron with iron pellets and/or coarse or lump ore and coke as well as coal. The melting process in the electric steel furnace is operated using electrical energy and by simultaneously using oxygen and injected coal. The plant for carrying out the method is composed of a mini-blast furnace and an electric steel furnace.
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