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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 16b
SUMMARY:Productivity increase at JSW-Dolvi Works CSP® caster through refractory performance enhancement
DESCRIPTION:Recent thin slab caster performance enhancements at JSW Dolvi Works with a clear focus to cast long sequences of higher quality grades produced at higher casting speeds, leading to higher throughputs have been possible with the application of the ElectroMagnetic Brake (EMBr). Along with this implementation, the increase in productivity has implied extension of the caster utilization time by reducing the process down time, the major portion of the process downtime is the regular sequence change time. 
To achieve these challenging conditions, the tundish and mold flow behaviour have been characterized and optimized along with implementation of higher refractories performance related to both their design and their material selection. Extensive numerical and physical simulations have been conducted to determine the different measurable parameters for tundish and mold flow improvements. Increased minimum residence time, improved inclusion floatation and turbulence reduction, better thermal homogeneity in tundish have been obtained after re-designing the internal tundish geometry. A new SEN producing stable meniscus flow and optimal mold temperature distribution allowing longer sequence to be cast in a thin slab caster. 
In addition to these refractory enhancements, JSW-D has significantly improved their casting parameters and stabilized the processes involved. Due to better co-ordination between the steelmaking & casting shop the casting speed fluctuations have been reduced and higher speeds of over 5.5 m/min corresponding to higher throughputs of above 4 tons/min have been realized on a consistent basis. Stable casting conditions have resulted in better refractory performance. The sequence length has increased by 15% on an average resulting in increasing the productivity of the shop with less unexpected stoppages or reduced numbers in slowdowns. Sustainability improvement has been achieved by increasing the number of heats/tundish and consequently the overall refractory consumption per ton of steel cast as well as the required energy have been reduced.

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DTSTART:20230615T104000
DTEND:20230615T110000
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