Abstract

Problems associated with the production of special steels in the electric arc furnace are discussed. The production cycle is segmented into three stages consisting of (i) scrap mix selection and load scheduling, (ii) power input control during the melting cycle, and (iii) refining control. Analysis of the production cycle as a three-stage process exposes the difficulties involved in obtaining an optimal steelmaking strategy for the electric arc furnace and progress made in applying modern control theory to the melting and refining stages is reviewed.

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