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VERSION:2.0
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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 18a
SUMMARY:The analysis of slag characteristics at VSB EAF CONSTEEL® charging hot metal and the influence on refractory performance
DESCRIPTION:The better EAF refractory performance can be achieved combining refractory materials and practices, metallurgy process parameters and proper slag composition. These 3 factors are well known as the success key for Steel Shop productions. Vallourec Brazil Steelmaking (VSB) counts on a very singular Consteel EAF which uses Hot Metal supplied by a Charcoal Blast Furnace. Nowadays, the Steel Shop is operating in 2 main recipes, which means with and without Hot Metal in the charge. So that, the attention to have an adequate slag chemical composition is in the routine bases for process feedback and control. Particularly, slag saturation and basicity had been more studied in this work guiding actions aiming to evaluate this control and benefits in the EAF refractory lifetime. The taken actions were defined and slag composition was evaluated using quaternary oxide system of MgO-CaO-FeO-SiO2, also analyzing the dual (saturated with CaO and MgO) and MgO saturated EAF slag chemistry comparing the base and period of trials indicated an effect increasing the refractory lifetime.
CLASS:PUBLIC
DTSTART:20230615T134000
DTEND:20230615T140000
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