Blast Furnace

Sequence Impulse Process for Oxygen Injection into the Blast Furnace

Sequence Impulse Process for Oxygen Injection into the Blast Furnace

Based on the success of the cupola furnace application for oxygen, the process was further developed for the blast furnace through extensive research and development work. The first full scale SIP plant has been in operation at the Schwelgern 1 blast furnace at thyssenkrupp Steel Europe in Duisburg since 2020. The operating results show significant process improvements.

Main Advantages of the SIP Process:

  • Improved gas flow through the furnace

  • Better flow behaviour of iron and slag

  • Lower thermal load for tuyere and refractory material

  • Optimised gas utilisation (eta CO)

  • Increase in the use of injection coal

  • Reduction in the use of metallurgical coke

  • Reduction in the overall consumption of reducing agents

  • Reduction in CO₂ emissions

  • Reduction in operating costs

  • Short amortisation period (ROI)

The SIP process for the blast furnace is marketed worldwide by our cooperation partner Primetals Technologies Ltd.

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