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Introduction

The research projects in Area 2 are dedicated to pyro metallurgical processes. The proposed program comprises a broad range of topics in the field of reduction technologies of ferrous and non-ferrous metallurgy, technology of crude steel production, steel refining technology and in the behaviour and characterisation of refractory materials during its contact with molten materials.

 

   

Objectives & Motivation

  • Reduction technologies of ferrous and non-ferrous metallurgy
  • Influence of additives on the process characteristics in BOF technologies
  • Steel refining technologies for special steelmaking
  • Behaviour and characterization of refractory materials
Contact person

Irmela Kofler
Management Area 2 & 3

 +43 732 6989 75627

Our targets

A new measurement technique for blast furnace fuel substitutes should be developed and applied. The obtained data will be used for validation of CFD models and to improve online control of the process. The processing of alternative reductants and the parallel recovery of valuable metal by-products are a primary goal. Furthermore an online measurement of metallization for DRI will be developed.

The thermodynamic and kinetic model of metallurgical reactions in the converter process will be applied for the process improvements. The aim is to reduce the number of necessary tuning parameters. Models for the bath agitation, gas mixture in the blowing lance and Fe yield will be developed. Further objectives are the properties of converter slag additives and the recycling and reuse of slags from secondary metallurgy to enhance the internal recycling rate within a steel work and to minimize the amount of disposal.

The effect of non-metallic inclusions on material properties such as fatigue, impact toughness and pitting corrosion resistance will be investigated. In a laboratory ESR-plant the electrode, which will be ingot cast of continuous cast under industrial conditions, will be remelted. Different slags will be used to achieve optimized types of inclusions. The main investigation method will be the characterisation of non-metallic inclusions by automated P-SEM supported by automated optical measurements.

With CFD and thermochemical simulation the impact of material and process parameters on refractory wear will be found out. For example the relation between the erosion rate and the acting shear stress will be identified. In experiments these data will be verified. Additionally a data base has to be developed using respective testing methods.

Results and application

Within area 2 the different hot temperature metallurgical processes will be optimized. In lab-scale and on-site experiments, with thermodynamic and kinetic models as well as with simulation tools the different processes will be investigated in detail.

The combination of measurement signals should lead to improved process control. The thermodynamic and kinetic models will provide an off-line and on-line tool for process optimization and control. With the verification of thermodynamic calculation by experimental data, the possibilities and limits to describe new systems and their qualification for practical use will be available. Thus the results can be directly transferred to industrial production. Statistical process modelling will result in the set of influencing parameters. The results of the projects will be implemented in the works of the industrial partners and can be marketed worldwide.