Phosphorus Partition between Liquid Steel and CaO-SiO2-P2O5-MgO Slag Containing Low FeO

Basu, Somnath; Lahiri, A.; Seetharaman, Seshadri

doi:10.1007/s11663-007-9057-y

Cited by 63 publications

(65 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Fig. 4, an excellent 1:1 agreement between phosphorous distribution lg L P, measured reported by Basu et al 10) and based on the ion and molecule coexistence theory can be obtained, meanwhile, a good 1:1 linear relationship between phosphorous distribution lg L P, measured reported by Nagabayashi et al 13) and based on the ion and molecule coexistence theory can also be found. It should be pointed out CaO-SiO 2 -MgO-FeO-P 2 O 5 slags was treated as a special CaO-SiO2-MgO-FeO-Fe2O3-P2O5 slags in this paper with the assumption that the content of Fe 2 O 3 equal to zero.…”

Section: Comparison Of Measured Phosphorous Distribu-supporting

confidence: 69%

“…The correlation proposed by Suito et al 6) indicates significantly lower temperature dependence of γ P 2 O 5 , compared with Turkdogan's expression. 5) Basu et al 10) 12) were satisfactorily applicable to the data of other previous workers. 5,6) Suito et al 11) and Kobayashi et al 12) made extensive work on the dephosphorizaion ability of steelmaking slags containing MnO, and they observed that the addition of MnO had a negative effect on dephosphorization.…”

Section: Introductionsupporting

confidence: 59%

“…The present study developed a fresh model without artificial regressed parameters to establish phosphorus partition between CaOSiO2-MgO-FeO-Fe2O3-P2O5 slags and liquid iron based on the ion and molecule coexistence theory. The measured data of phosphorus distribution of CaO-SiO2-MgO-FeOFe2O3-P2O5 slags equilibrated with liquid iron in a temperature range from 1 823 K to 1 923 K reported by Nagabayashi et al 13) and the measured data of phosphorus distribution of CaO-SiO2-MgO-FeO-P2O5 slags equilibrated with liquid iron in a temperature range from 1 873 K to 1 923 K by Basu et al 10) were both selected to verify the accuracy of the developed IMCT-Lp prediction model. It should be pointed out that CaO-SiO 2 -MgO-FeO-P 2 O 5 slags was a special CaO-SiO2-MgO-FeO-Fe2O3-P2O5 slags with the assumption that the content of Fe2O3 equal to zero.…”

Section: Introductionmentioning

confidence: 88%

“…One is directly comparing the measured L P, measured from previous references 10,13) and the calculated based on the ion and molecule coexistence theory; the other is comparing the IMCT−L P model with some other reported phosphorous distribution prediction models, 4,[6][7][8][9] such as Healy's model, 4) Suito's models, 6,7) Sommerville's model, 8) and Balajiva's model. 9) The comparisons between the measured phosphorous distribution LP, measured for CaO-SiO2-MgO-FeO-P2O5 slags equilibrated with liquid iron at 1 873 K and 1 923 K reported by Basu et al 10) or the measured phosphorous distribution LP, measured for the CaO-SiO2-MgO-FeO-Fe2O3-P2O5 slags at 1 823 K, 1 873 K and 1 923 K reported by Nagabayashi et al 13) and the calculated phosphorous distribution based on ion and molecule coexistence theory was illustrated in Fig. 4, respectively.…”

Section: Comparison Of Measured Phosphorous Distribu-mentioning

confidence: 99%

“…5,6) Suito et al 11) and Kobayashi et al 12) made extensive work on the dephosphorizaion ability of steelmaking slags containing MnO, and they observed that the addition of MnO had a negative effect on dephosphorization. In 2007, Basu et al 10) conducted experiments to establish for equilibrium phosphorus partition between CaO-SiO2-MgO-FeO-P2O5 slags and molten Fe which is free from Al2O3 or MnO, and proposed the correlation for equilibrium phosphorus partition in terms of ionic.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Retraction: A Prediction Model of Phosphorus Distribution between CaO–SiO2–MgO–FeO–Fe2O3–P2O5 Slags and Liquid Iron

Zhang

2014

ISIJ Int.

View full text Add to dashboard Cite

CaO−SiO2−MgO−FeO−Fe2O3−P2O5 slags is typical in the basic oxygen steelmaking(BOS) process. Phosphate distribution between slags and liquid iron is an index of the phosphorus holding capacity of the slag, which determines the phosphorus content achievable in the finished steel. In this study, a thermodynamic model for calculating phosphorus distribution between CaO−SiO2−MgO−FeO−Fe2O3−P2O5 slags and liquid iron, i.e., IMCT−Lp model, has been developed coupled with a developed thermodynamic model for calculating mass action concentrations of structural units, i.e., IMCT−Ni model, based on ion and molecule coexistence theory. Simple binary basicity R have a large effect on equilibrium mole number Σni of structural units in CaO-SiO2-MgO-FeO-Fe2O3-P2O5 slags, the formula of equilibrium mole number Σni against the simple binary basicity R of slags can be regressed as Σni = 2.604 -3.029*exp(-R/2.339), and the fitting degree is 0.995. The comparison of the calculated phosphorous distribution by IMCT−Lp model with the measured phosphorous distribution reported from different literatures shows that the agreement between the calculated phosphorous distribution and measured phosphorous distribution is good. Meanwhile, some other Lp prediction models have also been taken into consideration for calculating phosphate distribution between CaO−SiO2−MgO−FeO−Fe2O3−P2O5 slags and liquid iron, and the results shows that IMCT−Lp model have more accuracy compared with other Lp prediction models. The developed IMCT−Lp model can quantitatively calculate the respective contribution of FetO, CaO+FetO and MgO+FetO in the slags. A significant difference of dephosphorziation abilities among FetO, CaO+FetO and MgO+FetO can be found as approximately 0.00%, 99.98%, 0.01%. Meanwhile, the phosphorus in liquid iron can be effectively extracted by CaO+FetO in slags to form complex molecules 3CaO·P2O5 which made the main contribution to dephosphorizaiton in CaO-SiO2-MgO-FeO-Fe2O3-P2O5 slags.

show abstract

Section: Comparison Of Measured Phosphorous Distribu-supporting

confidence: 69%

Section: Introductionsupporting

confidence: 59%

Section: Introductionmentioning

confidence: 88%

Section: Comparison Of Measured Phosphorous Distribu-mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Retraction: A Prediction Model of Phosphorus Distribution between CaO–SiO2–MgO–FeO–Fe2O3–P2O5 Slags and Liquid Iron

Zhang

2014

ISIJ Int.

View full text Add to dashboard Cite

show abstract

Phosphorus Partitioning during EAF Refining of DRI Based Steel

Tayeb¹,

Fruehan²,

Sridhar³

2013

Proceedings of the 2013 International Symposium on Liquid Metal Processing and Casting

View full text Add to dashboard Cite

Thermodynamics of Phosphorus and Sulphur Removal during Basic Oxygen Steelmaking

Basu

Seetharaman

Lahiri

2010

steel research int.

View full text Add to dashboard Cite

Removal of impurity elements from hot metal is essential in basic oxygen steelmaking. Oxidation of phosphorus from hot metal has been studied by several authors since the early days of steelmaking. Influence of different parameters on the distribution of phosphorus, seen during the recent work of the authors, differs somewhat from that reported earlier. On the other hand, removal of sulphur during steelmaking has drawn much less attention. This may be due to the magnitude of desulphurisation in oxygen steelmaking being relatively low and desulphurisation during hot metal pre‐treatment or in the ladle furnace offering better commercial viability. Further, it is normally accepted that sulphur is removed to steelmaking slag in the form of sulphide only. However, recent investigations have indicated that a significant amount of sulphur removed during basic oxygen steelmaking can exist in the form of sulphate in the slag under oxidising conditions. The distribution of sulphur during steelmaking becomes more important in the event of carry‐over of sulphur‐rich blast‐furnace slag, which increases sulphur load in the BOF. The chemical nature of sulphur in this slag undergoes a gradual transition from sulphide to sulphate as the oxidative refining progresses.

show abstract

Phosphorus Partition between Liquid Steel and CaO-SiO2-P2O5-MgO Slag Containing Low FeO

Cited by 63 publications

References 15 publications

Retraction: A Prediction Model of Phosphorus Distribution between CaO–SiO2–MgO–FeO–Fe2O3–P2O5 Slags and Liquid Iron

Retraction: A Prediction Model of Phosphorus Distribution between CaO–SiO2–MgO–FeO–Fe2O3–P2O5 Slags and Liquid Iron

Phosphorus Partitioning during EAF Refining of DRI Based Steel

Thermodynamics of Phosphorus and Sulphur Removal during Basic Oxygen Steelmaking

Contact Info

Product

Resources

About