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Fields of Activity / Process Analysis / Oxygen activity in melts
Oxygen activity in melts
  
Dr.-Ing. H. Köchner • Tel: 0211 / 6707 - 892 • E-Mail:
herbert.koechner@bfi.de
 



Disposable innersion probe during use
 

Electrode polarisation
 

On-line monitoring at an induction furnace
 


Situation
Oxygen activity is an important parameter for the assessment of melt quality
• Short-duration potentiometric measurement of oxygen activity by means of
  disposable innersion probes
• Insufficient information about current oxygen activity in the melt

Solution
Continuous monitoring of oxygen activity by means of a new type of mobile voltammetric measuring technique
• Avoidance of electrode polarisation
• Innersion probes for multiple measurements and continuous use 
• Flexible adaptation of measurement cycles to metallurgical process control
  conditions

Operational use and benefits
• Continuous as well as random monitoring of oxygen activity in melts 
• Flexible use at metallurgical vessels throughout the process chain
• Measurement-data-based analysis of processes
  - Early knowledge of melt quality
  - Optimisation of processes through shortening of process times
  - Reduction in the required amount of deoxidants