Experimental Investigation of the Viscosities in CaO-SiO2-MgO-Al2O3 and CaO-SiO2-MgO-Al2O3-TiO2 Slags

Shankar, Amitabh; Görnerup, Märten; Lahiri, A.; Seetharaman, Seshadri

doi:10.1007/s11663-007-9087-5

Cited by 137 publications

(91 citation statements)

References 9 publications

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“…It is well known that FeO and MnO can decrease the viscosity. [25][26][27][28] TiO2 was also reported to decrease the viscosity based on the experimental study carried out by Shankar et al 9) and Park et al 29) Effect of sulphur on the viscosity of BF slag is still not clear. Lower viscosities of the industrial BF slag comparing to the synthetic slags are combined results of all minor components.…”

Section: Comparison Of Viscosities Between Industrial Slagmentioning

confidence: 99%

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Viscosities of Iron Blast Furnace Slags

et al. 2014

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The viscosities of the industrial and synthetic iron blast furnace slags have been measured using a custom designed rotating bob apparatus. This advanced apparatus enables control of the gas atmosphere and rapid quenching of the samples on completion of the viscosity measurements. The experiments were carried out using Mo spindle and crucible under ultra-high purity Ar flow. The microstructures and phase compositions of the quenched slag samples were determined by Electron Probe X-ray Microanalysis (EPMA) after the viscosity measurements.It was found that the viscosities of the industrial slags are lower than those of the corresponding synthetic slags made from pure Al2O3, CaO, MgO and SiO2. The difference in viscosities between industrial slags and synthetic slags will provide useful indications when applying the results of the synthetic slags to the real iron blast furnace slags. The activation energy of both industrial and synthetic slags is 174 kJ/mol and increases with decreasing MgO concentration. Replacement of (CaO+SiO2) KEY WORDS: ironmaking; blast furnace slags; viscosity; Al2O3-CaO-MgO-SiO2.

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Section: Comparison Of Viscosities Between Industrial Slagmentioning

confidence: 99%

“…[3][4][5][6][7][8][9][10] However, significant discrepancies exist for the reported viscosity data due to the difficulties of high temperature viscosity measurement. In addition to the major components Al2O3, CaO, MgO and SiO2, up to 5 wt% of other components, such as S, TiO2, MnO and FeO may also be present in the BF slags.…”

Section: Introductionmentioning

confidence: 99%

Viscosities of Iron Blast Furnace Slags

et al. 2014

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“…9,[15][16][17][18] Ohno and Ross 13) found TiO2 additions increase the slag viscosity in the CaO-SiO2-Al2O3-TiO2 slags under reducing atmospheres of C/CO equilibrium. Shankar et al 19) revealed the effect of TiO2 in the CaO-SiO2-MgO-Al2O3 slag system, where the viscosity decreased with TiO2 up to 2 mass%. Saito et al 14) found TiO2 lowered the viscosity in the CaO-SiO2-MgO-Al2O3 slag system at 10 mass% and 20 mass% TiO2.…”

Section: Introductionmentioning

confidence: 99%

Influence of TiO2 on the Viscous Behavior of Calcium Silicate Melts Containing 17 mass% Al2O3 and 10 mass% MgO

et al. 2012

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“…CaO and MgO are important additives for the electric furnace process as well as blast furnace process [11,12]. Generally, basicity and MgO are important factors that can affect a slag viscosity and melting temperature, and have been widely studied for various slag systems [13][14][15][16][17]. He [18] studied for effect of MgO on viscosity of blast furnace slag and showed that the slag viscosity decreased with the increasing of MgO content in a definite range, and it decreased obviously with the increasing of slag basicity.…”

Section: Introductionmentioning

confidence: 99%

Effects of Basicity and MgO in Slag on the Behaviors of Smelting Vanadium Titanomagnetite in the Direct Reduction-Electric Furnace Process

Jiang

Wang

Guo

et al. 2016

Metals

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Abstract:The effects of basicity and MgO content on reduction behavior and separation of iron and slag during smelting vanadium titanomagnetite by electric furnace were investigated. The reduction behaviors affect the separation of iron and slag in the direct reduction-electric furnace process. The recovery rates of Fe, V, and Ti grades in iron were analyzed to determine the effects of basicity and MgO content on the reduction of iron oxides, vanadium oxides, and titanium oxides. The chemical compositions of vanadium-bearing iron and main phases of titanium slag were detected by XRF and XRD, respectively. The results show that the higher level of basicity is beneficial to the reduction of iron oxides and vanadium oxides, and titanium content dropped in molten iron with the increasing basicity. As the content of MgO increased, the recovery rate of Fe increased slightly but the recovery rate of V increased considerably. The grades of Ti in molten iron were at a low level without significant change when MgO content was below 11%, but increased as MgO content increased to 12.75%. The optimum conditions for smelting vanadium titanomagnetite were about 11.38% content of MgO and quaternary basicity was about 1.10. The product, vanadium-bearing iron, can be applied in the converter steelmaking process, and titanium slag containing 50.34% TiO 2 can be used by the acid leaching method.

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Experimental Investigation of the Viscosities in CaO-SiO2-MgO-Al2O3 and CaO-SiO2-MgO-Al2O3-TiO2 Slags

Cited by 137 publications

References 9 publications

Viscosities of Iron Blast Furnace Slags

Viscosities of Iron Blast Furnace Slags

Influence of TiO2 on the Viscous Behavior of Calcium Silicate Melts Containing 17 mass% Al2O3 and 10 mass% MgO

Effects of Basicity and MgO in Slag on the Behaviors of Smelting Vanadium Titanomagnetite in the Direct Reduction-Electric Furnace Process

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