The objective of the project was the development of techniques to improve the control of the energy input by natural gas burners and of the wall mounted oxygen and carbon injectors of the electric arc furnace (EAF). Process data acquisition and measurement systems for foamy slag detection were...

Due to the high heating power of the electric arc furnace, precise end point control of the EAF refining process is essential for efficient melt processing. The evolution of the steel bath temperature was measured during the EAF refining phase using a novel fibre optical measurement system based...

The project objective was to develop a through-process control strategy for a reliable, simultaneous achievement of low steel carbon and nitrogen levels within the electric steelmaking route under minimum energy and material costs with optimal productivity. Detailed investigations on the effect...

The project aims to set up a methodology to manage the electric arc furnace(EAF) charged with the variable materials mix guaranteeing the required steel quality, minimising the cost to produce crude steel and the environmental impact, having in mind the volatility of scrap quality/price ratio...

Control of slag foaming in the BOF has always been problematic. With increased pressure on process yields and productivity, combined with increased demands for accurate control of refining it is important to develop a process control tool that can consistently achieve the optimum performance...

The objective of the project was to improve deslagging processes during two process steps of liquid steelmaking by applying image sensors and process models to control deslagging operations. The two process steps that were investigated are: after hot metal desulphurisation at SSAB EMEA AB,...

The main topic of this project was the combination of rule-based methods like failure mode and effect analysis (FMEA) or anticipatory failure determination (AFD) with data-based methods. The overall aim was to improve quality management in the cold rolling and finishing area and thus improve...

Due to the high heating power of the electric arc furnace, precise end point control of the EAF refining process is essential for efficient melt processing. The evolution of the steel bath temperature was measured during the EAF refining phase using a novel fibre optical measurement system based...

For control of carbon and nitrogen content during AOD treatment, dynamic models based on thermodynamics and reaction kinetics were developed and verified with data from three different AOD plants. The effect of the melt temperature on the equilibrium conditions for decarburisation and...

Additional oxygen supply via an RH top lance is mainly used for forced decarburisation in case of a lack of dissolved oxygen, and for chemical heating. To develop a dynamic control system for lance oxygen input, existing RH process models of BFI and IRSID were extended to the effect of oxygen...