AdaptEAF – Adaptive EAF on-line control for improved energetic efficiency

Initial situation:

  • Properties of scrap used as charge material for EAF steelmaking are changing with time regarding composition, yield, energy demand etc.
  •  Control of chemical energy input has to be adapted heat-individually to achieve best results regarding energy consumption and metallic yield.
  •  Amount of the hot heel has an important effect on process performance, but is difficult to access.

Working points in the project:

  • Monitoring of scrap basket filling degree and amount of hot heel by cameras with image analysis and dedicated sensors.
  •  Monitoring of scrap meltdown behaviour by off-gas analysis, dynamic modelling as well as vibration sensors and spectrometers.
  •  Development of a dynamic control for chemical energy input via burners and oxygen injectors adapted to actual scrap mix.
  •  Determination of optimal charging time for 2nd scrap basket.

Results:

  • Balanced electrical and chemical energy inputs for optimised energetic performance.
  •  Maximised metallic yield of the charged materials.
  •  Optimised furnace practice regarding scrap charging, steel bath level and slag amount.

TotOptLis
MeltCon

Recommendation

FOMTM – Fibre optical thermal monitoring at CC billet mould

Initial situation: The initial solidification of the molten steel is important for determining the quality of the cast product Rim formation […]

DissTec

Initial situation The evolution of secondary steelmaking processes and its introduction to the steelmaking plants brought about the effective production […]

PSP-BOF – Removal of Phosphorus from BOF-slag

Initial situation Increased cost for raw materials and for landfilling have forced European steelmakers to look for new ways to […]

InnoKon – Innovative non-stick surface to increase the service life of oxygen lances on the converter

In the converter process, pig iron is converted into crude steel with the addition of oxygen. This is done using […]