Mechanism of Graphite Electrode Comsumption in Electric Arc Steel Furnaces. Session 2.2A N.2.2.3

摘要

Graphite electrodes account for a significant portion of the cost of steelmaking by the electric arc furnace process. Electrode consumption can be divided into two types: 1) side loss caused by oxidation, and 2) tip loss caused by spalling, erosion in metal and slag, and sublimation in the arc. In this study, tip diameter and electrode weight were measured in commercial furnaces, and tip loss and side loss were separated from each other by a calculation method developed in our laboratory. Thus, the relationship between the operating conditions of arc furnaces and the quality of the electrodes used has been clarified. Several operating conditions to minimize electrode consumption also are discussed. (ERA citation 10:027907)