X-Pact® Bottom Stirring

A system for homogenization in metal bath in BOF converter

Challenges

  • Improvement of the homogenization
  • Promoting of bath/slag reactions for decarburization, dephosphorization and desulphurization close to the thermodynamic equilibrium

Solution

  • Bottom stirring of the liquid bath with inert gas (N2/Ar)
  • Optimization of low flow control
  • Flow control per stirring line

Technical advantages

  • Low final carbon content at lower final oxygen
  • Good metal homogeneity
  • Lower FeO content in the slag
  • Possibility of N2 alloying with N2 stirring gas

Productivity

  • Optimization of blowing process
  • Increased yield and reduced material consumptions