Oxygen Measurement
Monitoring oxygen activity throughout the steel making process is essential for production control and final as-cast quality. In less than 10 seconds, our expendable oxygen sensors measure the melt's oxygen activity a(O) over a wide concentration range in areas from hot metal desulphurization, furnace tapping, through ladle refining and continuous casting.
Correlations to S and Si in Hot Metal, carbon and aluminium in primary and secondary steelmaking are implemented in the formulas of our instruments. On choice, hand and automatic measuring lances may be operated wireless, without measuring cable.
Sensors: Celox®
Instruments: Celox-Lab® E, iM² Sensor Lab®
Quick Carbon Determination in Converter
Accurate and quick carbon determination enables the steel maker to make faster decisions about when to tap. Waiting for the final sample analysis from the lab to determine the Carbon content is no longer necessary. Tap-to-tap time is shortened and expensive energy and refractory costs are reduced.
Calculation of Pre-Deoxidation Additions to Eliminate or Reduce Over– or Reblows
Mathematical models provide the steelmakers with an indication about the amount of additions to be added. Accurate and fast oxygen measurements enable to calculate the deoxidation additions to be added to the tapping stream or to the transfer ladle more precisely. This method is beneficial for low carbon steels having relatively high and fluctuating oxygen levels.
Control of Bottom Stirring Efficiency
Inert gas is blown into the converter to reduce the C-O product and to enhance the decarburization rate.The argon bubbling will shift the C-O equilibrium downwards. By measuring the oxygen by celox and carbon with a sample after blowing, it is possible to check the argon stirring efficiency.
- Accurate Carbon and Oxygen determination
- No waiting for lab analysis: quick-tapping praxis
- Shortened tap-to-tap time
- Increased productivity and steel output
- Energy and refractory savings
- Decrease of redundant over– or reblows
- Reduction of unnecessary and expensive additions to a minimum
