Acciaieria Arvedi S.p.A., an Italian steel producer, installed a new 150-ton electric-arc furnace (EAF) from Primetals Technologies. The EAF, which was installed in the company’s Cremona Steel Works, has a production capacity of 1.4 million metric tons of crude steel per year. The tap-to-tap time is just 36 minutes and is supported by single bucket operation, which enables around 200 metric tons of crude steel to be produced each hour. The EAF is usually charged with a mixture of 65% scrap iron, 25% pig iron and 10% hot-briquetted iron.
To optimize the energy balance of the plant, the waste heat from the EAF is recovered and used to generate steam. Approximately 17 tons of steam is generated per hour from the energy recovered from the waste heat. This steam is used for the plant’s three pickling lines. The energy recovery system replaces the existing gas boiler in the facility, reducing gas consumption.