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Apr 2, 2012Science and Technology
Tyasa builds steel mill incorporating new electric arc furnace from Siemens

Mexico-based steel-maker Tyasa is building a compact steel mill that incorporates a new electric arc furnace from Siemens that reduces CO2 emissions by up to 30 percent compared to conventional electric arc furnaces. The new system, which recovers energy from the hot exhaust gas, also reduces costs by around 20 percent. The Tyasa mill is scheduled to be completed by mid-2013. The new Simetal EAF Quantum furnace combines proven shaft furnace technology elements with new processes in order to reduce carbon dioxide emissions while at the same time saving energy and costs. Unlike a conventional electric arc furnace, it is not necessary to raise the roof and retract the electrodes in order to charge the furnace. The other benefit of charging via a shaft is that the scrap is preheated by the offgas of the melting process, which significantly reduces energy requirements.

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