Longlife Tuyere – New improved blast furnace tuyeres

Initial situation:

  • Burning of tuyeres is the most common cause of unplanned shutdowns of blast furnaces.
  • A total non-productive energy consumption of about 1,500 GJ per stoppage.
  • High potential for reducing the non-productive energy consumption and the energy losses caused by tuyere damages (~ 1,600 TJ for Germany).

Working topics:

  • Development of innovative, tuyere coatings and textures.
  • Conditioning of tuyere surfaces for producing a lotus-like effect in the high-temperature range (reduced wettability of tuyere surface by HM).
  • Development, construction of the new Longlife Tuyeres.
  • Testing the Longlife Tuyeres at the industrial blast furnace.

Results:

  • Extension of the life time of blast furnace tuyeres.
  • Reduction of non-productive energy consumption.
  • Reduction of CO2 emissions.
  • Reduction of operating costs.
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