Electric arc furnace that uses post combustion

Details Electric arc furnace that uses post combustion Electric arc furnace that uses post combustion

1998-04-17

1999-08-24

Walberg, Teresa J.

Industrial electric heating furnaces

Arc furnace device

Furnace body detail

373 9, 373 72, F27B 1404

Patent

active

059433604

ABSTRACT:
An electric arc furnace includes a closed melting vessel and includes an opening that can be closed where metal to be molten is charged into the melting vessel. At least one electrode extends into the melting vessel and generates an electric arc and forms a molten metal bath. At least one oxygen lance can be extended into the melting vessel for injecting oxygen into the molten metal bath and create a reaction where the carbon monoxide is generated. Gas is exhausted from the melting vessel and the carbon monoxide gas concentration of the exhaust gas is measured. A post combustion chamber receives the exhaust gas and provides post combustion of the exhaust gas. Post combustion oxygen is injected into the melting vessel in an amount sufficient to provide post combustion based on the amount of oxygen necessary for post combustion of the exhaust gas and the post combustion chamber.

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