Effect of titanium content on the precipitation behavior of carbon-saturated molten pig iron

Gao, Leizhang; Ma, Tengfei; Hu, Mingyou; Yan, Zhiming; Lü, Xue-wei; Hu, Meilong

doi:10.1007/s12613-019-1755-3

Cited by 6 publications

(4 citation statements)

References 11 publications

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“…Since the 1990s, due to the worldwide recognition that titanium-containing materials can extend the life of blast furnace and the wide application of vanadium titanium magnetite [49], molten iron containing titanium has become the focus of the research on the viscosity of molten iron.…”

Section: Fig 3 Variation Of the Viscosity Of Binary And Ternary Molte...mentioning

confidence: 99%

“…When the solute element in liquid iron contains titanium, the solid phase particles will be promoted to precipitate. Zhu [53] and Gao [49] studied the precipitation process of titanium compounds in molten iron of blast furnace by calculation and experiment respectively. The results of analysis indicated that TiC and TiN phases with a high melting point can exist stably in high-temperature liquid iron.…”

Section: Inclusionmentioning

confidence: 99%

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Review on the Viscosity of Iron-based Melts in Metallurgical Process

et al. 2022

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Low-carbon metallurgy is a critical issue for the world in the 21st century and improving production efficiency is one of the main ways to resolve this problem. Ironbased alloy runs through the whole process of metallurgy, and the viscosity properties of melt is of great significance on the process of reaction, transportation and solidification casting, which is one of the constraints on production efficiency. The research progress of the viscosity of iron-based melt is summarized from the aspects of measurement methods, influencing factors and prediction models in this paper. It is briefly concluded that the oscillating method is the most widely used measurement method of iron-based melts and pointed out that the interaction between the components and the formation of inclusions will have a significant effect on the viscosity of ironbased melts. And the three semi-empirical models derived from the Andrade equation can be applied to the viscosity prediction of molten iron as the pre-revised basic equations with greater precision. Then the direction of iron-based melt viscosity 2 research in the future is prospected at last.

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Section: Fig 3 Variation Of the Viscosity Of Binary And Ternary Molte...mentioning

confidence: 99%

Section: Inclusionmentioning

confidence: 99%

Review on the Viscosity of Iron-based Melts in Metallurgical Process

et al. 2022

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“…4 In China, the VTM mineral deposit is mostly located in Panzhihua and Chengde regions, and the main method for iron extraction from VTM ore is the blast furnace (BF)-basic oxygen furnace (BOF) process. 5–7 During the BF smelting, the iron oxides in the ore are reduced to hot metal in the high temperature, and then it flows to BOF for further treatment. 8,9 Therefore, the viscosity of the hot metal is an important factor to influence the efficiency of the smelting process, because it determines the fluidity of the hot metal.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, many efforts have been made to investigate the precipitation of vanadium- and titanium-containing compounds in the hot metal. Gao et al 5 studied the effect of titanium content on the precipitation behaviours of TiC in carbon-saturated hot metal. It was found that Fe 3 C precipitated first when the titanium content was less than 0.25 wt.%, while the TiC precipitated preferential as the titanium content was greater than 0.47 wt.%.…”

Section: Introductionmentioning

confidence: 99%

Influencing mechanism of (V, Ti)@(C, N) compounds on the viscosity of hot metal

Jiang,

Yu,

Song

et al. 2024

Ironmaking & Steelmaking: Processes, Products and Applicati

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The precipitation of the (V, Ti)@(C, N) compounds, for example, VC, VN, TiC and TiN, in the hot metal during the ironmaking process may result in high viscosity of the hot metal and cause a negative impact on the process. How to control the precipitation of the (V, Ti)@(C, N) compounds is a significant issue for the high-efficient ironmaking. In this paper, the precipitation behaviour of the (V, Ti)@(C, N) compounds and its effect on the viscosity of the hot metal were investigated. The theoretical analysis results show that the precipitation temperature of the (V, Ti)@(C, N) compounds increases with the increasing content of vanadium, titanium, silicon and manganese, while it decreases with the that of sulphur and phosphorus in hot metal. Additionally, the viscosity-measuring was carried out by a self-developed melt viscometer, and the results show that the viscosity of the hot metal can be affected significantly by the vanadium content. As the vanadium content exceeds 0.3 wt.%, the viscosity of the hot metal increases sharply with the increasing of vanadium content, which will have a serious impact on the fluidity of the hot metal. Furthermore, the precipitation product in the hot metal was confirmed to be the (V, Ti)@(C, N) compounds by using the scanning electron microscope and the energy dispersive x-ray spectroscopy, which proved that the compounds mainly consist of the V, Ti, C and N elements.

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