AOD valve stations

Valve stations for AOD side wall blowing

Challenges

  • Exact adjustment of gas flow for process and shroud gas

Solution

  • Distinct valve racks for process gas (O2 and Ar) and shroud gas
  • Loop for tuyere cooling gas (N2)
  • Individual flow control per shroud line

Technical advantages

  • Reduction of wear differences in tuyeres
  • Separate emergency loop for process gas with self contained pressure regulator
  • High quality instrumentation with excellent accuracy

Productivity

  • Optimization of AOD treatment process
  • Increase of lining lifetime

Quality

  • Improved product quality