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A direct comparison via post-mortem analysisAnalysis of MA spinelMA spinel vs magnesia-chromite lining concepts for a Pierce-Smith-ConverterPierce-Smith-Converter is investigated and presented. Bricks were lined during field trials in the tuyeres and its surrounding zone. In comparison to previous lining concepts, MA spinel shows an increased resistance to wear in the tuyere surrounding zone. The loss per batch is higher for the magnesia-chromite brick in comparison to the new concept applying MA spinel. For the tuyere bricks, a comparison of performancePerformance is not as straightforward; the main focus of the present work is thus laid upon the tuyere zoneTuyere zone. Results from microstructural analysisAnalysis for both concepts under the same conditions are presented and discussed suggesting a higher corrosionCorrosion resistance and general performancePerformance for the brick containing MA spinelMA spinel.

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Alternative MA Spinel-Based Lining Concept for Tuyere Zone in Pierce-Smith-Converter

  • 会议论文

  • 发表日期：

    2025年

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  • A. Stachel,
  • J. Kreyca,
  • D. Gregurek,
  • J. Schmidl

摘要

A direct comparison via post-mortem analysisAnalysis of MA spinelMA spinel vs magnesia-chromite lining concepts for a Pierce-Smith-ConverterPierce-Smith-Converter is investigated and presented. Bricks were lined during field trials in the tuyeres and its surrounding zone. In comparison to previous lining concepts, MA spinel shows an increased resistance to wear in the tuyere surrounding zone. The loss per batch is higher for the magnesia-chromite brick in comparison to the new concept applying MA spinel. For the tuyere bricks, a comparison of performancePerformance is not as straightforward; the main focus of the present work is thus laid upon the tuyere zoneTuyere zone. Results from microstructural analysisAnalysis for both concepts under the same conditions are presented and discussed suggesting a higher corrosionCorrosion resistance and general performancePerformance for the brick containing MA spinelMA spinel.