Analysis of Bof Tapping Effect on Ladle Filler Sand Drag

Melo, Pedro Henrique Resende Vaz de; Matos, Werner Aredes; Reis, Rafael Fernandes

doi:10.5151/2594-5300-34517

Cited by 1 publication

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“…Properties of the filler sand that can impact free opening include: refractoriness, thermal expansion, flowability, particle-packing density, particle-size distribution, moisture content and sintering rate [5][6]. Variables related to the operational conditions include ladle size, diameter of the ladle nozzle, ladle cycle time, tap-to-ladle open time, average casting temperature, steel grade production, method of filler sand addition, efficiency of the casting channel cleaning [5] and the interaction with converter tapping jet [7].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Filler Sand Composition in a Free Opening Rate of Steel Ladle

Martins,

Pereira,

Melo

et al. 2023

ABM Proceedings

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The free opening rate of the steel ladle not only affects the efficiency of steel production due to reduced casting speed, process interruptions and worsening of steel cleanliness, but also exposes the operators to a personal accident, which has a great impact on the cost and quality of the steel produced. Industrial tests were carried out with about 735 tons of sand with chromite content of the order of 35.0%, called high chromite sand (sand "B"). The tests were carried out in 21.065 heats in the Usiminas Steelshop in Ipatinga. Throughout the industrial processing, operational and safety data were analyzed. The higher content of chromite in the filler sand changed the sintering behavior of the filler sand and improved the free opening rate of in 0.56%.

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Section: Introductionmentioning

confidence: 99%