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HomeStrengthened scrap impact area in BOF converters (SSIA)
Strengthened scrap impact area in BOF converters (SSIA)
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The SSIA project was undertaken to develop and identify ways and means to improve the lining wear in exposed areas of BOF refractory, more specifically the scrap impact area. Different maintenance operations were evaluated on the impact on wear rates at different working conditions. A new improved refractory was developed and tested in field test in comparison with conventional refractory for the scrap impact area. Techniques for air-mist cooling of the converter shell and cooling by gas purging into the vessel were tested. Quantitative evaluation of different maintenance operations and new techniques was performed. The conclusions from the project are that preventive maintenance operations performed during lining campaigns, e.g. slag splashing and slag washing, are the most beneficial actions to achieve lower refractory wear rate in the scrap impact area. Type of refractory is also an important factor, but plant conditions needs to be considered in the choice of refractory type. Slag with bricks patching and patching with MgO-based masses are shown to be the most beneficial acute measures for repairing excessive wear in the scrap impact area.
- Published:
- Corporate author(s): Directorate-General for Research and Innovation (European Commission)
- Personal author(s): Mizelli, H ; Isokääntä, S ; Wahlberg, H ; Eriksson, J ; Retschnig, A
- Themes: Basic metals industry, steel industry , Industrial research and development
- Subject: industrial research , iron and steel industry , iron and steel product , metal waste , research and development , testing
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| ISSN 1831-9424 | ISBN 978-92-79-25086-6 | DOI 10.2777/25289 | Catalogue number KI-NA-25-349-EN-N |
- Released on EU Publications:
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