Acciaieria Arvedi has commissioned its new steel scrap processing plant in Cremona, Italy. The core equipment of the plant, supplied by Danieli Centro Recycling, is a heavy-duty shredder fed by a steel conveyor of 30 m length.
The new shredder plant is designed to process about one million t/year of light to medium iron grade scrap at a rate of 200 t/h into high-quality feedstock – also referred to as proler – for optimal electric arc furnace operation. Even sheared light demolition scrap can be processed at such high rates. The feedstock produced at the Cremona plant guarantees highly efficient EAF operation and a correspondingly high yield.
Latest technology for clean EAF feedstock
The 5.2 MW shredder features a Danieli-patented inverter and a noise and vibration analysis system that automatically detects scrap pieces that cannot be shredded. The system also automatically controls the reject door. A maintenance system monitors component wear and indicates when a component should be replaced.
To reduce the power use and wear inside the shredding chamber, an 850-kW pre-shredder has been installed upstream of the main shredder. Here pre-shredding and processing of heavy bales is performed.
In a downstream separation line, steel fractions are separated from non-ferrous metals using cascade air and magnetic systems to achieve close to 100% steel feedstock for electric arc furnaces.
Production of mixed grades
Acciaieria Arvedi can even produce mixed grades, such as zorba and zurik, in an offline separation line for resale.