The aim is to optimise the melting rate while limiting the heat load on the wall cooling elements. The control system monitors and evaluates the electrical variables as well as the heat load on the water-cooled wall elements. If the heat load is heavy, the arc radiation onto the area concerned is suitably reduced, for which purpose the furnace is operated asymmetrically for a time. In melting phases in which the heat load on the wall is non-critical, the control system adjusts the currents for a power-optimal operating point.
| Development Status | Products |
|---|---|
|
Commercial
|
| Parent Process: Electric Arc Furnace | |
|---|---|
| Energy Savings Potential |
The melting rate was Improved by as much as 8 % by increasing the mean electric power Input and by shortening the power-off times. |
| CO2 Emission Reduction Potential |
|
| Costs |
The economical mode of operation reduces the consumption of refractory gunning mixes by around 10 %. |
