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ProcessingProcessing of waste from electrical and electronic equipmentEquipment (WEEEWaste Electrical and Electronic Equipment (WEEE) scrap) is increasingly important. In 2022, 62 million tons of WEEE scrapWEEE scrap were generated worldwide, with an expected growth of 32% until 2030. Thus, production routes with increased WEEE scrapWEEE scrap in feed materials of up to 100% are being researched and applied typically in top blowing rotary converters (TBRCs), involving novel challenges for operationOperation and refractoryRefractories linings. Temperatures > 1800 °C, low oxygen partial pressures, and high freights of halogens (Br, F, Cl) originating from plastics and flame retardants are being reported. The present work serves to investigate the relevant wear mechanisms for typical refractory materialRefractory material under representative process conditions. The corrosionCorrosion resistance of the refractoryRefractories ceramics is tested with finger tests using WEEE scrapWEEE scrap-based slagsSlag. The influences of halogens are elaborated, as they are expected to increase wear rates especially in off-gas areas of TBRCs. The results create an enhanced understanding of the influence of WEEE scrapWEEE scrap on slagSlag systems, process conditions, and refractoryRefractories lining wear.

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Refractory Wear and WEEE Scrap Recycling

  • 会议论文

  • 发表日期：

    2025年

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  • S. Lackner,
  • J. Kreyca,
  • D. Gregurek,
  • J. Schmidl

摘要

ProcessingProcessing of waste from electrical and electronic equipmentEquipment (WEEEWaste Electrical and Electronic Equipment (WEEE) scrap) is increasingly important. In 2022, 62 million tons of WEEE scrapWEEE scrap were generated worldwide, with an expected growth of 32% until 2030. Thus, production routes with increased WEEE scrapWEEE scrap in feed materials of up to 100% are being researched and applied typically in top blowing rotary converters (TBRCs), involving novel challenges for operationOperation and refractoryRefractories linings. Temperatures > 1800 °C, low oxygen partial pressures, and high freights of halogens (Br, F, Cl) originating from plastics and flame retardants are being reported. The present work serves to investigate the relevant wear mechanisms for typical refractory materialRefractory material under representative process conditions. The corrosionCorrosion resistance of the refractoryRefractories ceramics is tested with finger tests using WEEE scrapWEEE scrap-based slagsSlag. The influences of halogens are elaborated, as they are expected to increase wear rates especially in off-gas areas of TBRCs. The results create an enhanced understanding of the influence of WEEE scrapWEEE scrap on slagSlag systems, process conditions, and refractoryRefractories lining wear.