Features of Regulation of the Electric Regime of Electro Arc Furnaces in the Production of Ferroalloys with High Silicon Content

The OFZ introduced a control system for the electric mode of an ore-thermal furnace for the production of ferroalloys with a high silicon content. A distinctive feature of the system from traditional electric mode regulator is the presence of mathematical and software for determining the distribution of active power over characteristic zones of the near-electrode space (arc, shunt, melt). Rational distribution of power in the near-electrode space between the arc, shunt and melt ensures maximum furnace performance with minimum power consumption and allows optimizing the electrode bypass mode depending on the intensity of the arc process. The influence of the power distribution between the arc and the shunt on the specific power consumption in the production of FeSi75 is considered. The dependence of the specific power consumption and furnace productivity on the values of the power released in the arc and shunt zones has been revealed. The redistribution of active power in the near-electrode space between the arc and the shunt towards an increase in the arc power leads to a decrease in the specific power consumption and an increase in the furnace productivity. It is shown that traditional regulators are not able to provide optimal power consumption during FeSi75 smelting.