Method for Controlling the Parameters and Characteristics of an Electric Arc to Evaluate the Efficiency of Using Briquetted Metallized Scale for Steel Smelting

method for controlling dynamic current-voltage characteristics in an electric arc furnace is described. The influence of the electrode’s current direct component on the accuracy of estimating the resistance of the furnace zones and the direct components of the arc current and voltage is noted. An improved algorithm for determining these parameters is presented with the results of its testing in a laboratory experiment on the use of a metallized additive to a charge for steel smelting. Not only was the addition of scale shown to have no negative effect on the process, it resulted in a slight decrease in the magnitude of the arc direct component, as well as contributing to the slag foaming process.