Stelco Steelmaking Overview and BOF Refractory Strategy Study
Explore the Stelco steelmaking complex through an in-depth study of BOF refractory strategies and maintenance practices. Discover insights on ladle desulphurization, twin strand caster upgrades, and operator education for future development.
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Presentation Transcript
BOF Refractory Maintenance AIST OSTC Study Tour 2019 October 2019 Chad Cathcart, P. Eng.
Stelco Steelmaking Overview PICKLING STEELMAKING HOT STRIP MILL IRONMAKING MAINTENANCE CENTRAL BOILER STATION COKEMAKING Ground breaking in 1974; start-up in 1980 Located on the north shore of Lake Erie in Ontario 6,600 acres (2,670 hectares) of Zoned Industrial Land 2,200 acres (890 hectares) steel mill mile (1.2 kilometre) dock Access by Road, Rail & Water
Basic Oxygen Steelmaking Complex Transfer Ladle Desulphurization with Rotary Lance 2 Top-blown BOF Vessels with a heat size of 275 tons (250 tonnes) Ladle Trim Station (LTS) and RHOB Vacuum Degassing in secondary steelmaking Twin strand caster upgraded in 1997
BOF Refractory Strategy Top blown only 3-port lances currently in use (previously using 4-port) Original goal to maximize lining life Slag Splash after every heat (aim) Campaigns of > 40,000 heats on a lining
Slag Splashing Splash Index Splash Index 2/19/2019 3/19/2019 4/19/2019 5/19/2019 6/19/2019 Week 7/19/2019 8/19/2019 9/19/2019 Average Crew Min Crew Max Target
Splash Index vs. Spray Consumption 3/5/2019 4/5/2019 5/5/2019 6/5/2019 7/5/2019 8/5/2019 9/5/2019 Week Splash Index Spray Consumption
Bottom Sweat vs. Spray Cost #7 Vessel #8 Vessel 3/5/2019 4/5/2019 5/5/2019 6/5/2019 7/5/2019 8/5/2019 9/5/2019 3/5/2019 4/5/2019 5/5/2019 6/5/2019 7/5/2019 8/5/2019 9/5/2019 Week Week Spray Consumption Bottom Sweat Spray Consumption Bottom Sweat
Current Work & Future Development Operator Education BOF Vessel Slag Strategy Blowing Practice and Lance Height
Thank You. stelcocanada.com
