Title: Method for monitoring and controlling the refining of crude iron

Abstract: Oxygen or oxygen-containing gas is blown onto a molten crude iron bath inside a converter. A layer of slag or metal-slag emulsion forms atop the molten crude iron bath and grows in height during the course of the refining reaction. The height of such layer is indirectly determined by detecting an electrical characteristic of the layer. The layer of slag or metal-slag emulsion is made to serve as the dielectric of a capacitive reactive and/or as the flux-permeable part of an inductive reactance, and such reactance, or a plurality of such reactances, form part of a resonant circuit.

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Inventors: Mahn, Gustav (Wolfenbuttel, DT)
Schoop, Josef (Peine, DT)
Kugler, Jorg (Wolfenbuttel, DT)

Application Number: 517811
Filing Date: 1974-10-24
Publication_date: 1977-08-23
Assignee: Stahlwerke Peine-Salzgitter AG (Peine, DT)
Primary Class(es): 75/375
Other Classes:
US Patent Ref:

3505062	Apr, 1970	Woodcock	75/60.
3663204	May, 1972	Jungwirth	75/60.

Other Refs:
Primary Examiner: Rosenberg, Peter D.
Assistant Examiner:
Attorney: Striker; Michael J.