Effect of Slag Composition on Dephosphorization and Foamability in the Electric Arc Furnace Steelmaking Process: Improvement of Plant Operation

Heo, Jung Ho; Park, Joo Hyun

doi:10.1007/s11663-021-02322-3

Cited by 7 publications

(2 citation statements)

References 40 publications

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“…Sun et al 21) investigated the influence of temperature on dephosphorization at lower basicity and lower temperature based on industrial experiments and IMCT, and found that increasing the enrichment degree of C 2 S-C 3 P in the dephosphorization slag was conducive to dephosphorization of hot metal. Yan et al 22) and Hoe et al 23) evaluated the effect of slag composition on dephosphorization based on high temperature laboratory experiments and thermodynamics calculations. To know the dephosphorization process clearly, Dogan et al [24][25][26] investigated the dephosphorization process by employing time-lapse sampling while monitoring simultaneous decarburization using a constant volume pressure increase technique (CVPI) with X-ray fluoroscopy.…”

Section: Introductionmentioning

confidence: 99%

Effect of Slag Phase on Dephosphorization in BOF

Xia,

Wang,

et al. 2023

ISIJ Int.

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In this work, the effect of the slag phase on dephosphorization in BOF (basic oxygen furnace) is explored by industrial practical experiments. The research results show that the final dephosphorization rate is related to the phase of slag rather than basicity and T.Fe content in slag. The correlation between the dephosphorization ability of slag and the proportion of liquid phase (phase B) and phosphorus-containing solid solution phase (phase A) in the slag is much higher than that of RO (MgO•FeO, MnO•FeO) phase (phase C). The phosphorous partition fitting by using the minimum second-order multiplication proposed in this work is compared with the equations suggested by Healy and Ogawa. The comparison result shows that the dephosphorization ability of slag can be well predicted by analyzing the proportion of liquid phase and phosphorus-containing solid solution phase in slag, and the mechanism of the influence of the slag phase on dephosphorization is discussed.

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Section: Introductionmentioning

confidence: 99%

Effect of Slag Phase on Dephosphorization in BOF

Xia,

Wang,

et al. 2023

ISIJ Int.

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“…Slag foam play vital roles in steelmaking processes, i.e. cover the arcs in EAF; improve steel quality by absorbing deoxidation products ( SiO2 and Al2O3) protect the steel from deoxidation; protect the steel from N2 and H2 absorption and insulate liquid steel to minimize heat loss [2].…”

Section: Introductionmentioning

confidence: 99%

Utilization of rubber tree bark as a carbon source for electric arc furnace steelmaking: Carbon/slag interaction at 1550℃

2022

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Rubber tree bark (RTB) is a biomass that consists of wood and rubber parts, with high volatile and ash contents. This research reports the utilization of RTB as a carbon source in Electric Arc Furnace steelmaking processes. RTB was mixed with coal at a ratio of 1:1 by weight, and heated at 1000℃ under an argon atmosphere for 1 h. The chars were brought to contact with Electric Arc Furnace slag (37.86 wt% Fe2O3) at 1550℃ for 15 min to investigate their interaction and compared to coal. Coal showed short slag foaming behavior with a foaming time of 4 min, while complete FeO reduction was seen thereafter with the DOM of 65.14%. For RTB, slag foaming sustains over 15 min, but small extent of FeO reduction was observed with the DOM of 42.57%. For the Mixture, foaming time was 8 min, while iron droplets were seen since 8 min with the DOM of 54.63%. It was likely that interaction between the mixture and slag was due to the synergistic effect between coal and RTB. This research unlocks the potential of using RTB biomass for steelmaking process and the consumption of coal could be deducted by up to 50 wt%.

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Slag Foaming

Conejo

2024

Electric Arc Furnace: Methods to Decrease Energy Consumption

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Effect of Slag Composition on Dephosphorization and Foamability in the Electric Arc Furnace Steelmaking Process: Improvement of Plant Operation

Cited by 7 publications

References 40 publications

Effect of Slag Phase on Dephosphorization in BOF

Effect of Slag Phase on Dephosphorization in BOF

Utilization of rubber tree bark as a carbon source for electric arc furnace steelmaking: Carbon/slag interaction at 1550℃

Slag Foaming

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