Patent ID: 9599401
Date: 2017-03-21
CPC Classifications: C21C,C22B,F27B,F27D,Y02P

Claim:
1. A control system for controlling a melting process in an electric arc furnace for melting a metal, wherein the electric arc furnace comprises molten and solid metal and a slag layer on the surface of the molten metal and, wherein an electromagnetic stirrer is arranged to stir the molten metal, the control system comprising a control unit configured to carry out the steps of calculating/determining masses of the molten and solid metal at a point of time, wherein the calculation is based on initial values of the molten and solid metal, an arc power supplied to the electric arc furnace, and temperatures of the molten and solid metal, wherein the control unit is further configured to carry out the steps of calculating a function based on the calculated/determined masses of the molten and solid metal at the point in time, determining a stirring power based on the calculated function, and supplying the determined stirring power to the electromagnetic stirrer.