Siemens VAI Metals Technologies has received an order from the Electrometallurgical works Dneprospetsstal named after A. N. Kuzmin, Zaporozhye, the Ukrainian special steel manufacturer to supply a new electric arc furnace, complete with water treatment plant for its No. 3 steel works. This modernization project will increase the steel works’ production capacity to 540,000 tons of liquid steel per year. The value of this order lies in the low double-digit million euro range. The modernized steel works is scheduled to come into operation in first quarter of 2012.
Dneprospetsstal JSC is leading manufacturer of special steels in Ukraine. Its product portfolio includes stainless and instrument steels, high-speed and roller bearing steels, alloyed structural and high-temperature resistant nickel-based steels. Dneprospetsstal decided to modernize steel works No. 3 extensively in order to both increase the production capacity and reduce the per ton production cost.
Siemens will supply the electric arc furnace with a tapping weight of 60 tons and a tap-to-tap time of 48 minutes. The electric arc furnace will be powered from a 60 MVA furnace transformer. This new furnace will require less electrical energy per ton of steel produced than existing plants. The consumption of electrodes and other consumables will also be considerably less.
The scope of supply also covers the furnace cooling water treatment plant. The cooling system is to be designed as a closed circuit in order to save water. Some 1,200 cubic meters of water will circulate per hour to cool the electric arc furnace, transformer, hydraulic systems and waste gas pipes. On account of the relatively high temperature in the water circuit, appropriate chemicals will have to be added to prevent calcification and corrosion. Suspended solids will also be filtered out. (SteelGuru)