2018
DOI: 10.1002/srin.201700516
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Effect of Al2O3 on the Melting, Viscosity, and Phosphorus Distribution of CaO–SiO2–Fe2O3–P2O5 Slag System

Abstract: An investigation is conducted to study the effect of Al2O3 on the melting, viscosity, and phosphorus distribution of CaO–SiO2–Fe2O3–P2O5 slag system by using Single Hot Thermocouple Technique and rotating cylinder viscometer. The results show that with the addition of Al2O3 content, the melting temperature range of slag system is first reduced and then increased, as the added Al2O3 may react with CaO to form different compounds with varied melting points. The slag viscosity increases with the addition of Al2O3… Show more

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Cited by 12 publications
(12 citation statements)
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“…2P + 5/3Fe 2 O 3 = 10/3Fe + P 2 O 5 (5) The reaction of oxidation of element Mn is shown in Equation ( 6):…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…2P + 5/3Fe 2 O 3 = 10/3Fe + P 2 O 5 (5) The reaction of oxidation of element Mn is shown in Equation ( 6):…”
Section: Methodsmentioning
confidence: 99%
“…Many scholars have studied the effect of slag composition and temperature on the dephosphorization efficiency under different conditions used by the methods such as theoretic calculation, high-temperature experiment and industrial test [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Some scholars have carried out research work on the slag-forming system and route of the converter process.…”
Section: Introductionmentioning
confidence: 99%
“…However, the increase of Al 2 O 3 and the decrease of FeO content in slag can easily reduce the total amount of (Q 0 + Q 1 ) structure units. 7,8,22) Therefore, the total area fraction of (Q 0 + Q 1 ) structure units decreases with the increase in the dephosphorization temperature. The value of NBO/Si decreases with increasing the dephosphorization temperature, which further indicates that the DOP of the dephosphorization slag increases.…”
Section: Structure Analysis Of Dephosphorization Slag Atmentioning
confidence: 98%
“…The increase of basicity and FeO content, as well as the decrease of Al 2 O 3 content in the slag can reduce the DOP of the slag, thus reducing the slag viscosity. [21][22][23] Therefore, when the temperature is higher than 1 723 K, the viscosities of different slags increase with increasing the end temperature of dephosphorization. When the temperature is lower than 1 723 K, all the dephosphorization slags are in a state of solid-liquid coexistence.…”
Section: Calculation Of Activation Energy Of Viscous Flowmentioning
confidence: 99%
“…The phosphorus content of these domestic iron ore is high, leading to the increase of CaO consumption and the difficulty of CaO melting. CaF 2 has been employed as a slag agent to reduce the slag viscosity and promote the melting of CaO-based slag [1]. However, the CaF 2 is gradually limited because it can introduce severe environmental pollution.…”
Section: Introductionmentioning
confidence: 99%