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METHOD:PUBLISH
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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 16a
SUMMARY:Preventing stave wear and lowering fuel rates
DESCRIPTION:"Blast furnace stave design robustness has significant impact on the longevity of secure, reliable blast furnace operations. Blast furnaces are forecast to be in operation for years to come, but ultimately will be replaced by alternative steelmaking routes. A likely impact for blast furnace operators is to extend campaigns. Short interim repairs will become the norm, with major rebuilds and relines (which can take many months) becoming less common.
The purpose of the stave cooling system is to preserve blast furnace shell integrity making it suitable for many campaigns without change. Consequently, it is imperative to avoid premature failure. Copper and cast iron staves have been shown to bend, due to thermal effects of hot and cold sides, resulting in pipe connection failures and water leaks into the furnace. Additionally copper staves have experienced excessive wear as a result of cold abrasive materials being present at the furnace walls. These problems became well known in the early 2000’s. Primetals Technologies studied these phenomena and developed patented solutions to prevent bending in the critical area of the staves, as well as using abrasion resistant, hot face inserts. These retain burden material & whilst allowing freezing of soft, melting materials and create a wear barrier. Results from regular monitoring of current wear-resistant installations have validated the continued presence of the wear-resistant solutions and demonstrate the potential for many decades of copper cooling staves life. Additionally the data reveals that copper staves with wear-resistant solutions retain more stable and lower heat loads through the range of operating conditions. The conclusion from this is that an additional benefit of fuel saving can be realised. "

CLASS:PUBLIC
DTSTART:20230615T141000
DTEND:20230615T143000
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