Behaviour Of Iron During Reduction Of Slag

Behaviour Of Iron During Reduction Of Slag

BEHAVIOUR OF IRON DURING REDUCTION OF SLAG

G. SIWIEC et al.: BEHAVIOUR OF IRON DURING REDUCTION OF SLAG OBTAINED FROM COPPER FLASH SMELTING As shown in previous studies [14-15], intensifica-tion of iron oxide reduction does not take place until the copper content in the slag id decreased to less than 0,6 %mass, which was successfully confirmed by the obtained results.

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Growth behavior of iron grains during deep reduction of

May 01, 2020 The growth kinetic model of metallic iron grains during the deep reduction of copper slag is described as D 1.424 = 20839.38 exp − 116.17 × 10 3 RT t for ranges ~1423–1573 K and ~30–180 min, where D denotes the granularity of the metallic iron phase at reduction time t (min) and reduction temperature T (K).

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Reduction Behaviour of BOF Slags by Carbon in Iron

During the process of reduction, slag composition, temperature, and original P2O5 content were investigated respectively. the phosphorus distribution behavior was investigated when solid iron

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Slag Formation During Reduction of Iron Oxide Using

The aim of this work was to study the slag formation during the reduction process and the reduction behaviour of iron oxides. Furthermore, the reduction behaviour of iron ore during continuous feeding was assessed. Mixtures of iron ore and calcined lime with a basicity of 0, 0.8, 1.6, 2.3, and 2.9 were melted and reduced by hydrogen.

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BEHAVIOUR OF IRON DURING REDUCTION OF SLAG

As a result, a Cu-Pb-Fe alloy is obtained and subjected to the converting process along with waste slag which contains ca. 0,5 % mass Cu. The article presents an analysis of results of the research on behaviour of iron in the course of slag reduction where diverse fine-grained carbon-bearing materials function as reducers

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Sedimentation Behavior of Liquid Iron Droplets during

As for the iron extraction from molten converter slag by smelting reduction, the yield of metallic iron mainly depends on the recovery of suspended iron droplets in molten slag, and therefore, coalescence and sedimentation behavior of iron droplets is of great signifi-cance to the sedimentation efficiency of metallic iron and separation effect

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Slag Formation during Reduction of Iron Oxide Using

reduction behaviour and the relevant parameters during the reduction of oxides using hydrogen in plasma state. The reduction of iron ore with hydrogen in a DC plasma jet was studied by Gilles and Clump [23]. They used a DC plasma jet with a water-cooled plasma torch to generate an arc for the smelting process.

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(PDF) Slag Formation during Reduction of Iron Oxide

Furthermore the reduction behaviour of iron ore during continuous feeding was assessed. Mixtures of iron ore and calcined lime with a basicity of 0, 0.8, 1.6, 2.3, and 2.9 were melted and reduced

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Coalescence and sedimentation of liquid iron droplets

Feb 15, 2020 During the iron extraction process by smelting reduction, the collection of iron droplets suspended in molten slag directly determines the recovery of metallic iron, and thus studying the coalescence and sedimentation behavior of iron droplets is extremely important for improving the sedimentation efficiency and separation effect of metallic

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Migration Behavior of Components in Converter Slag during

slag and the metal phase under the standard state. Hence, it was significant to clarify the dynamic phenomena during the reduction process, which will be discussed in the fol-lowing sections. 3.2. Migration Behavior of Component during Reduc-tion of Molten Converter Slag Using Aluminum Dross The contents of MO (FeO, P 2O 5, MnO, and Al 2O 3) by

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Slag Formation during Reduction of Iron Oxide Using

The aim of this work was to study the slag formation during the reduction process and the reduction behaviour of iron oxides. Furthermore the reduction behaviour of iron ore during continuous feeding was assessed. Mixtures of iron ore and calcined lime with a basicity of 0, 0.8, 1.6, 2.3, and 2.9 were melted and reduced by hydrogen.

get price

Slag Formation during Reduction of Iron Oxide Using

reduction behaviour and the relevant parameters during the reduction of oxides using hydrogen in plasma state. The reduction of iron ore with hydrogen in a DC plasma jet was studied by Gilles and Clump [23]. They used a DC plasma jet with a water-cooled plasma torch to generate an arc for the smelting process.

get price

Slag formation during reduction of iron oxide using

Leoben, Austria. The aim of this work was to study the slag formation during the reduction process and the reduction behaviour of iron oxides. Furthermore, the reduction behaviour of iron ore during continuous feeding was assessed. Mixtures of iron ore and calcined lime with a basicity of 0, 0.8, 1.6, 2.3, and 2.9 were melted and reduced by

get price

BEHAVIOUR OF IRON DURING REDUCTION OF SLAG

As a result, a Cu-Pb-Fe alloy is obtained and subjected to the converting process along with waste slag which contains ca. 0,5 % mass Cu. The article presents an analysis of results of the research on behaviour of iron in the course of slag reduction where diverse fine-grained carbon-bearing materials function as reducers

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Mineral Reactions and Slag Formation During Reduction

to avoid sticking and improve gas permeability during the solid state reaction of iron ore pellets to iron. 1.1 Aims of Study The aims of this thesis are to: (i) describe the olivine reactions during reduction in the blast furnace, (ii) compare phases found in fast cooled probed pellets and slow cooled excavated pellets from the EBF, and (iii)

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Electrorefining for direct decarburization of molten iron

Sep 27, 2021 Application of electromotive force between molten iron–carbon and slag is shown to decarburize iron. Tafel behaviour for silicon reduction electrodes in slag, gas evolution during

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Distribution of copper and iron components with hydrogen

May 25, 2020 The microstructure of slag before and after reduction was analyzed, and the distribution characteristics of copper and iron components during the reduction process were evaluated. The results show that there is always a sedimentation behavior of the matte in the slag during

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Min Chen's research works Northeastern University, MA

Min Chen's 100 research works with 359 citations and 3,750 reads, including: Element Migration Behaviors during the Reduction of Vanadium Slag for Iron‐removal and Vanadium‐enrichment

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Microstructure and Porosity Evolution During the Reduction

Mar 29, 2021 Reduction Behavior. Figure 6 shows the reduction degree (R.D.) and the rate of reduction (R.R.) of the iron-bearing materials as a function of temperature. A similar behavior of reduction can be seen for all materials studied. Three different regions were delimited in Figure 6 based on the existing reduction pattern and phenomena. Region R1

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Behavior of Titanium During the Smelting of Vanadium

May 18, 2018 The suppression of titanium oxide reduction enables both successful separation of iron from slag and smooth production operations for the smelting of vanadium titanomagnetite. This study investigates the distribution behavior of titanium between the hot metal and enriched titanium slag during the electric furnace smelting of vanadium titanomagnetite metallized pellets. Activity

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A mössbauer study of the behavior of iron cations in iron

A Mössbauer spectroscopy technique has been developed to study the distribution of iron cations in slag melts as a function of distance from a reaction surface. A wide range of slag compositions of interest to the nonferrous smelting industry was reduced and oxidized using mixtures of CO, CO 2,and Ar. Mössbauer spectra were collected on quenched slag samples for varying conditions between

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Element Migration Behaviors during the Reduction of

The element migration behaviors during the reduction process were clarified from phase transitions and microcosmic features. The results showed that 78.7 wt% of Fe and 38.6 wt% of Cr migrated from slag to the metal phase with a mass ratio of pretreated SoG-Si w (Si-SiC mixt ) to VS MOD (S/V) of 0.15 after soaking at 1823 K for 60 min.

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[PDF] RECOVERY OF PIG IRON FROM COPPER SMELTING SLAG

Copper slag is a by-product obtained during smelting and refining of copper. Copper smelting slag typically contains about 1 wt.% copper and 40 wt.% iron depending upon the initial ore quality and the furnace type. Main components of copper slag are iron oxide and silica. These exist in copper slag mainly in the form of fayalite (2FeO ·SiO2).

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iron slag processing

PDF Steel Slag Utilization Overview in Indian Perspective . Aug 1 2018 PDF Current total productions of steel slag in India are around 12 million tonnes per Process of slag Generation epa During the process of reducing iron ore through coke in a Steel industry steel slag blast furnace

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Slag Formation during Reduction of Iron Oxide Using

Feb 20, 2020 The aim of this work was to study the slag formation during the reduction process and the reduction behaviour of iron oxides. Furthermore the reduction behaviour of iron ore during continuous feeding was assessed. Mixtures of iron ore and calcined lime with a basicity of 0, 0.8, 1.6, 2.3, and 2.9 were melted and reduced by hydrogen.

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Slag formation during reduction of iron oxide using

Leoben, Austria. The aim of this work was to study the slag formation during the reduction process and the reduction behaviour of iron oxides. Furthermore, the reduction behaviour of iron ore during continuous feeding was assessed. Mixtures of iron ore and calcined lime with a basicity of 0, 0.8, 1.6, 2.3, and 2.9 were melted and reduced by

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Minor-Element Behavior and Iron Partition During the

Jul 18, 2013 A mathematical model has been developed to describe the reduction process and the minor-element behavior during the cleaning of copper converter slag under equilibrium conditions. The results of simulation show that large fractions of Pb, Bi, Sb and As, but little of Zn, are absorbed into the recovered copper phase.

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Electrorefining for direct decarburization of molten iron

Sep 27, 2021 Application of electromotive force between molten iron–carbon and slag is shown to decarburize iron. Tafel behaviour for silicon reduction electrodes in slag, gas evolution during

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Mineral Reactions and Slag Formation During Reduction of

Iron reduction and the deformation of the pellets were enhanced in the zone of high alkali deposition. Thin sections of pellet samples were prepared to distinguish amorphous and crystalline slag phases for a better understanding of the formation of the potassium rich slag. Olivine breaks down to various extents to form a SiO 2-FeO-MgO-K 2 O glass.

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Foaming during reduction of iron oxide in molten slag

Jul 18, 2013 AbstractCoal based direct liquid ironmaking processes, also known as smelting reduction (SR) processes, are now receiving serious consideration in the industry. However, although several processes have reached pilot plant trials, only one, namely Corex, has been commercialised. In all SR processes, most of the iron oxide is reduced in the molten slag phase and foaming is an important

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Reaction Behavior of Phosphorus in Coal-Based Reduction of

phosphorus molten iron and high phosphorus dephosphorization slag to be used as a phosphate fertilizer. The influences of various parameters, including the reduction temperature, the reduction time, and the C/O molar ratio, on the reaction behavior of phosphorus during reduction

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iron slag processing

PDF Steel Slag Utilization Overview in Indian Perspective . Aug 1 2018 PDF Current total productions of steel slag in India are around 12 million tonnes per Process of slag Generation epa During the process of reducing iron ore through coke in a Steel industry steel slag blast furnace

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Distribution of copper and iron components with hydrogen

May 25, 2020 The microstructure of slag before and after reduction was analyzed, and the distribution characteristics of copper and iron components during the reduction process were evaluated. The results show that there is always a sedimentation behavior of the matte in the slag during

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Influence of Reduction Temperatures on Reduction of FeO

[9] V. Sahajwalla, M. Rahman, L. Hong, N.S. Chaudhury, Influence of carbonaceous materials on slag foaming behavior during eaf steelmaking, Iron and Steel Technology, (2006) 54-63. [10] J.R. Dankwah, Reduction of FeO in EAF steelmaking slag by end-of-life polystyrene and it's blend with metallurgical coke, International Journal of Engineering

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[PDF] RECOVERY OF PIG IRON FROM COPPER SMELTING SLAG

Copper slag is a by-product obtained during smelting and refining of copper. Copper smelting slag typically contains about 1 wt.% copper and 40 wt.% iron depending upon the initial ore quality and the furnace type. Main components of copper slag are iron oxide and silica. These exist in copper slag mainly in the form of fayalite (2FeO ·SiO2).

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Behavior of vanadium during reduction and smelting of

Jun 06, 2020 Abstract: The effects of CaO content, MgO content and smelting temperature on the vanadium behavior during the smelting of vanadium titanomagnetite metallized pellets were investigated. The thermodynamics of reduction and distribution of vanadium was analyzed and the high-temperature smelting experiments were carried out.

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Element Migration Behaviors during the Reduction of

The element migration behaviors during the reduction process were clarified from phase transitions and microcosmic features. The results showed that 78.7 wt% of Fe and 38.6 wt% of Cr migrated from slag to the metal phase with a mass ratio of pretreated SoG-Si w (Si-SiC mixt ) to VS MOD (S/V) of 0.15 after soaking at 1823 K for 60 min.

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Behavior of Silicon During Reduction and Smelting of

The behavior of silicon during smelting of vanadium titanomagnetite metallized pellets in an electric furnace has been investigated thermodynamically and experimentally. Thermodynamic calculations indicated that the activities of free oxygen ion and silicate increase with increasing CaO and MgO content in the titanium slag, whereas silica activity decreases as CaO and MgO increase.

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