Effects of Additives in BaO-BaF2-MnO Slag on Phosphate and Manganese Capacities.

Liu, Xiaoya; Wijk, Olle; Selin, R.V.; Edström, J. O.

doi:10.2355/isijinternational.38.36

Cited by 16 publications

(13 citation statements)

References 1 publication

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“…Liu et al found that the increase in BaF 2 content in the BaO‐BaF 2 ‐MnO slag enhances the activity coefficient of MnO in the melts. They also mentioned that the CaF 2 in the BaO‐MnO slag is partly transformed to BaF 2 in the slag according to the following reaction:

false({italicCaF}_{2} false) + false(BaO false) = false(CaO false) + false({italicBaF}_{2} false)

…”

Section: Resultsmentioning

confidence: 99%

Viscosity‐structure relationship of alkaline earth silicate melts containing manganese oxide and calcium fluoride

Kim

Park

2019

J Am Ceram Soc

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The effect of CaF 2 on the viscosities of the MO-SiO 2 -xMnO-yCaF 2 melts (M[=Ca or Ba]O/SiO 2 = 0.4-0.5, x = 10[±1] or 40[±2] mol%, y = 0-15 mol%) have been studied at high temperatures. At MnO = 40[±2] mol%, the viscosity of Ba-Mn-silicate melts is lower than that of Ca-Mn-silicate melts because Mn 2+ is a strong network modifier in the former system. However, the viscosities of both alkaline earth silicate melts with MnO = 10[±1] mol% are not affected by cation type because MnO activity is too low to affect the viscosity of the melts. The CaF 2 addition decreases the viscosities of the Ba-Mn-silicate melts with low-MnO contents, while it has less impact on the viscosities of the melts with high-MnO contents. The effect of CaF 2 on the relationship between viscosity and the structure of the silicate melts is quantitatively analyzed using the micro-Raman spectra of quenched glass samples. The NBO/Si ratio of alkaline earth silicate melts, which indicates the degree of polymerization of the silicate networks, has a linear relationship with the activation energy for the viscous flow of the melts. K E Y W O R D S alkaline earth silicates, CaF 2 , degree of polymerization, NBO/Si, Raman spectroscopy, viscosity

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false({italicCaF}_{2} false) + false(BaO false) = false(CaO false) + false({italicBaF}_{2} false)

…”

Section: Resultsmentioning

confidence: 99%

Viscosity‐structure relationship of alkaline earth silicate melts containing manganese oxide and calcium fluoride

Kim

Park

2019

J Am Ceram Soc

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“…4 by plotting the phosphate capacity against the MnO to SiO 2 ratio. 8,[19][20][21] It is interesting that the phosphate capacity is not affected by MnO to SiO 2 ratio in the slags investigated. It increases only as the temperature decreases, viz.…”

Section: ϫmentioning

confidence: 99%

“…It increases only as the temperature decreases, viz. the phosphate capacity decreases in order of BaO-BaF 2 -MnO-SiO 2 system at 1 573 K 19) ϾCaO-SiO 2 -MnO(-MgO) at 1 623 K…”

Section: ϫmentioning

confidence: 99%

Phosphate Capacity of CaO–SiO2–MnO–FeO Slag Saturated with MgO

2010

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“…The studies of Nassaralla et al [14] and Tabuchi and Sano [15] indicated that BaO-BaF 2 slags were very effective for the dephosphorization of iron under either oxidizing or reducing conditions. Later, Liu et al [16] found that the replacement of BaO with CaO or MgO in BaO-BaF 2 -MnO slags decreased the phosphate capacity. Furthermore, the addition of CaF 2 to BaO-BaF 2 -MnO slags, lowered the BaO activity, which reduced the phosphate capacity of the BaO-containing slags.…”

Section: Introductionmentioning

confidence: 97%

Phosphate Capacities of CaF2-MgO and CaF2-CaO-MgO Slags

Akbari

Pickles

2015

High Temperature Materials and Processes

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Previously published sulphide capacity data and thermodynamic arguments have been employed to calculate the phosphate capacities and the phosphorus partition ratios between a molten carbon saturated iron alloy and binary CaF 2 -MgO slags and also ternary CaF 2 -CaO-MgO slags at 1450 °C. For the CaF 2 -MgO binary system, a linear relationship was found between the phosphate and the sulphide capacities as follows: − = 3 4 PO log C + s 1.2 log C 25.2. For the ternary CaF 2 -CaO-MgO system at 1450 °C, the logarithm of the calculated phosphate capacities ranged from 19.47 to 20.15. With the addition of CaO, the phosphate capacities initially increased, reached a maximum and then decreased slightly. The addition of MgO to the CaF 2 -CaO system resulted in a decrease in the phosphate capacity. The calculated phosphorus partition ratios increased slightly with increasing mole fraction of CaO in the ternary system.

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Effects of Additives in BaO-BaF2-MnO Slag on Phosphate and Manganese Capacities.

Cited by 16 publications

References 1 publication

Viscosity‐structure relationship of alkaline earth silicate melts containing manganese oxide and calcium fluoride

Viscosity‐structure relationship of alkaline earth silicate melts containing manganese oxide and calcium fluoride

Phosphate Capacity of CaO–SiO2–MnO–FeO Slag Saturated with MgO

Phosphate Capacities of CaF2-MgO and CaF2-CaO-MgO Slags

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