1997
DOI: 10.2355/isijinternational.37.21
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A Kinetic Model Applied to the Molten Pig Iron Desulfurization by Injection of Lime-based Powders.

Abstract: A kinetic model of hot-metal desulfurization by deep injection of synthetic powdermixtures is presented.The approach takes into consideration the transient contribution due to the particles dispersed in the bulk metal and those located at the bubble-metal interface, the influence of the carry-over slag as well as the volumeand composition of the top slag. Themodel has been utilized to assess the influence of the treatment temperature, rate of injection of powder mixtures, gas flow rate and initial concentratio… Show more

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Cited by 29 publications
(28 citation statements)
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“…Vários autores modelaram a cinética de injeção de CaO e CaC 2 para a dessulfuração de gusa [2][3][4][5][6][7]. Neste trabalho preliminar, buscou-se utilizar o modelo mais simples possível para avaliar a sua capacidade preditiva.…”
Section: Fundamentos Cinéticosunclassified
See 1 more Smart Citation
“…Vários autores modelaram a cinética de injeção de CaO e CaC 2 para a dessulfuração de gusa [2][3][4][5][6][7]. Neste trabalho preliminar, buscou-se utilizar o modelo mais simples possível para avaliar a sua capacidade preditiva.…”
Section: Fundamentos Cinéticosunclassified
“…Não foi observado um tempo de incubação para a dessulfuração, como relatado por outros autores. As próximas etapas do modelamento incluem: a análise do equilíbrio termodinâmico metal escória (escória inicial mais carbureto) e a inclusão da possibilidade da dessulfuração ocorrer, simultaneamente, através de reação direta gusa-escória, já proposta por outros autores [2].…”
Section: Conclusãounclassified
“…In order to get a higher desulfurization efficiency, these parameters, the gas flow rate, the rate and depth of injection, the geometry and location of the submerged lance, were studied. [11][12][13] In a steel plant in China, hot metal is desulphurised in the 210 t transfer ladle by injection of 60% Mg and 40% CaO using nitrogen as a carrier gas. With the adjustment of product structure, the proportion of the deep desulfurization hot metal increased to more than 95%.…”
Section: Introductionmentioning
confidence: 99%
“…The rate-limiting step is the transfer of [S] from liquid steel towards the slag-steel interface 17,24) or (S 2 − ) from the slag or injected powders towards the interface. [25][26][27][28] …”
Section: Kinetic Model Concept For Powder Injectionmentioning
confidence: 99%