behaviour of iron during reduction of slag

Numerical Analysis on Flow Behavior of Molten Iron and ...

Numerical Analysis on Flow Behavior of Molten Iron and ...

Conservation Equation. For conservation equations, the following assumptions were made: (1) the chemical reaction [], thermal radiation [], and Marangoni effect [] are ignorable; (2) air, iron, and slag are incompressible fluid []; (3) the interface of ironslag in the taphole was kept as a horizontal surface, and slag was floated on iron because of lighter density; (4) the determination ...

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Binder Behavior on ChromiteCarbon Composite Pellets

Binder Behavior on ChromiteCarbon Composite Pellets

During the reduction process at temperatures above 773 K: i) for conventional indurated pellets, the accepted value is 1500 N/pellet for use in large blast furnaces 11; and ii) for composite pellets, the value is still an open question because it depends on the reactor that is used, according to the high temperature strength behavior of cold ...

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Growth behavior of iron grains during deep reduction of ...

Growth behavior of iron grains during deep reduction of ...

The change in granularity of iron grains in copper slag during coalbased deep reduction was identified using optical microscopy and the Image J analysis software. The growth behavior of iron grains was investigated based on the Hillert dynamic model. The results indie that the granularity and sphericity of iron grains are strongly affected by the reduction time and temperature during the ...

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 Origemdestino

Origemdestino

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Migration behaviors and kinetics of phosphorus during coal ...

Migration behaviors and kinetics of phosphorus during coal ...

Aug 24, 2018 · To understand the migration mechanisms of phosphorus (P) during coalbased reduction, a highphosphorus oolitic iron ore was reduced by coal under various experimental conditions. The migration characteristics and kinetics of P were investigated by a fieldemission electron probe microanalyzer (FEEPMA) and using the basic principle of solid phase mass transfer, respectively.

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Foaming during reduction of iron oxide in molten slag ...

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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NonIsothermal GasBased Direct Reduction Behavior of High ...

NonIsothermal GasBased Direct Reduction Behavior of High ...

Iron containing V and Cr along with the Tirich slag was obtained through the melting separation of the metallized HCVTM pellets. The mass fractions and recovery rates of Fe, V, and Cr in the iron were % and %, % and %, and % and %, respectively.

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Thermodynamic behavior of boron minerals in iron ...

Thermodynamic behavior of boron minerals in iron ...

According to the homologous linear rule applied widely in the chemistry area, the linear equation between the formation reaction Gibbs free energy of calcium and magnesium composite compounds was fitted out. The formation reaction Gibbs free energies of Mg3(BO3)2 and Mg2B2O5 are obtained from the formation reaction of Ca3(BO3)2 and Ca2B2O5 at different temperatures.

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 Origemdestino

Origemdestino

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CO2 Mineralization and Utilization using Steel Slag for ...

CO2 Mineralization and Utilization using Steel Slag for ...

Dec 08, 2017 · The amount of worldwide reduction by CO 2 mineralization using iron and steel slags was approximately Mt per year, contributing to a reduction of .

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Reduction behavior of chromium oxide in molten slag using ...

Reduction behavior of chromium oxide in molten slag using ...

The reductions of FeO and CrO x by aluminum were promoted to the lower part of slag with the increase in temperature and CaO/SiO 2 ratio because of the increase in fluidity of slag. A liquid metal containing chromium was formed and precipitated on the bottom of slag during the reduction.

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Publiion

Publiion

Jun 26, 2021 · Also, cassiterite is associated with iron ores and during smelting the iron get reduced together with tin and ends up contaminating the metal. The basicity is always a useful parameter that govern the behavior of the slag. Basicity was varied through addition of CaO and MgO.

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: Properties of Transition Metals and Their Compounds ...

: Properties of Transition Metals and Their Compounds ...

Jul 31, 2019 · Several times a day, the slag and molten iron are withdrawn from the furnace. The iron is transferred to casting machines or to a steelmaking plant (Figure (PageIndex{7})). Figure (PageIndex{7}):Molten iron is shown being cast as steel. (credit: Clint Budd) Much of the iron produced is refined and converted into steel.

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Carbon Concentration and the Use of DirectReduced Iron in ...

Carbon Concentration and the Use of DirectReduced Iron in ...

Direct reduced iron (DRI), as a primary feedstock in ironmaking and steelmaking, must maintain strength and integrity during processing, transportation, and use to avoid any operational issue and loss of materials. Mechanical properties and structural changes of DRI during production should be understood. The first part of this study was designed to find associations among physical properties ...

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Reduction Behaviors of Hot Metal Dephosphorization Slag in ...

Reduction Behaviors of Hot Metal Dephosphorization Slag in ...

Apr 15, 2006 · The reduction behavior of dephosphorization slag on the iron bath in the reduction furnace of the slag regeneration process was researched by test converter experiments. Dephosphorization slag and coke as the reduction agent and the heat source were added to the hot metal in the converter and oxygen was blown through the top lance.

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Why reduction of a metal oxide becomes easier if the metal ...

Why reduction of a metal oxide becomes easier if the metal ...

The entropy is higher if the metal is in liquid state than when it is in solid state. The value of entropy change (ΔS) of the reduction process is more on +ve side when the metal formed is in liquid state and the metal oxide being reduced is in solid state. Thus the value of ΔG° becomes more on negative side and the reduction becomes easier.

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