Mass Transfer in B. O. H. Metal Bath

Mori, Hisashi; Matsuo, Midori; Yamaguchi, Takekazu; Ito, Masao; Yoshii, Hitoshi

doi:10.2355/tetsutohagane1955.50.10_1411

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The RH desulfurization process has been studied by many researchers since 1980s. [ 15,16 ] Influence factors of the desulfurization efficiency during the RH desulfurization process mainly included the particle size, the injection method, the desulfurizer composition, etc. [ 17 ] During the RH desulfurization process, desulfurizer particles with the composition of 50% CaO–50% CaF 2 were added in the vacuum vessels.…”

Section: Introductionmentioning

confidence: 99%

“…The sulfur content was lowered to less than 5 ppm. [ 16 ] It was reported that the CaO–Al 2 O 3 desulfurizer [ 18 ] with the diameter of 1–3 mm was injected into the molten steel by powder blowing, effectively promoting the desulfurization efficiency during RH. It was proposed that the CaO–Al 2 O 3 –CaF 2 ‐based desulfurizer with a CaO/Al 2 O 3 ratio of 2.5–4.0 was beneficial to improve the desulfurization during RH.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Kinetic Analysis for Steel Desulfurization during Ruhrstahl–Heraeus Process

Zhang,

Peng,

Ren

2023

steel research int.

View full text Add to dashboard Cite

A kinetic model for the RH desulfurization process was established based on the FactSage Macro Processing. The desulfurizer addition, the desulfurization reaction, the steel mixing, the flow circulation, and the desulfurizer floating during the RH refining process were considered in the model. Simulated results agreed well with measured results, indicating that the current model can be used to predict the desulfurization reactions during the RH refining process. The CaO activity increased with a higher CaO/Al2O3 ratio and a lower SiO2 content, which exhibited a similar tendency with the desulfurization ratio. It was indicated that it was necessary to increase the CaO activity in the desulfurizer to improve the desulfurization ratio. The S content in the molten steel decreased with time and a higher ratio of the powder blowing. The cost increased with time due to the refractory erosion and the steam consumption. The cost of the desulfurizer added by the powder blowing was lower than that of the gravity sinking.This article is protected by copyright. All rights reserved.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%