Method for operating an arc furnace comprising at least one electrode, regulating and/or control device, machine-readable program code, data carrier and arc furnace for carrying out said method

摘要

In a method for operating an arc furnace (2) with at least one electrode (3a, 3b, 3c), a solid material fed to the arc furnace (1) is melted by an arc (1) formed by the at least one electrode (3a, 3b, 3c). A measurement (MM) for the mass of one part of the solid material arranged on a boundary (2) of the arc furnace (1) is determined, and using the determined measurement (MM), a process variable of the arc furnace (1) is controlled and/or regulated. A method which can reduce the risk of electrode damage caused by metal scraps falling into the treated area is provided.

主权项

1. A method for operating an arc furnace comprising at least one electrode, comprising:
melting solid material fed to the arc furnace by means of an arc formed by the at least one electrode, using a model for enforced oscillations to determine a measure of a mass of part of the solid material that is caked on an enclosure of the arc furnace, including:
generating an current evaluation signal based on a detected current supplied to the at least one electrode,generating an oscillation evaluation signal based on detected sound oscillations of the enclosure,determining a phase shift between the current evaluation signal and the oscillation evaluation signal at one or more frequencies, andcalculating the measure of the mass of the part of the solid material that is caked on the enclosure based on the determined phase shift determined, and at least one of controlling or regulating a process variable of the arc furnace based on of the mass.