Zerstörte Hochofenblasform

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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