Fluxed Magnetite Pellet

US20230220513A1

The present invention discloses additive for reducing the roasting temperature of fluxed magnetite pellets and a method of using it, consisting of components: B2O3, Mn2O3, the B2O3 and …

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Influence of flux additives on iron ore oxidized pellets

Influence of flux additives on iron ore oxidized pellets. Xiao-hui Fan, Min Gan, Tao Jiang, Li-shun Yuan, Xu-ling Chen Journal of Central South University ›› 2010, Vol. 17 ›› Issue (4): 732-737.

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Effects of MgO additive on metallurgical properties of fluxed-pellet

As a main charging burden of blast furnace (BF) ironmaking process, pellets play an important role in ironmaking process. However, compared with sinters, there are some inevitable …

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Mechanisms in oxidation and sintering of magnetite iron ore green pellets

The oxidation of magnetite iron ore pellets is an important issue for several reasons. The oxidation reaction, shown in Eq. (1), is highly exothermic and releases a major part of the …

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Characterization of Fluxed Iron Ore Pellets as Compared to Feed

Keywords: Calcium Aluminium silicate, Lime Fluxed pellets, Characterization, Strengthening behavior, Shatter and tumbler test Abstract. The effect of lime addition in …

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Use of oxygen-enriched gas for the oxidation of acid and fluxed

"The U.S. Bureau of Mines, in cooperation with Cleveland-Cliffs, Inc. (Hibbing, Minnesota), investigated ways of enhancing the quality (compressive strength, after-tumble and …

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Chemistry of Dolomite-Fluxed Hematite and Magnetite Pellets …

Dolomite-fluxed pellets of various compositions were made from magnetite concentrate, hematite concentrate and a concentrate containing a natural mixture of both. Physical properties and …

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Study of the Oxidation Process of Magnetite Fluxed Pellets by …

The results obtained can be used in the development of technologies that ensure the production of pellets from fluxed magnetite pellets with the required properties and which …

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An effective strategy for preparing fluxed metallized pellets from

Moreover, a synergistic mechanism and consolidation behavior were reported in the preparation process of fluxed metallized pellets. The fluxed metallized pellets with a compressive strength …

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Additive for reducing roasting temperature of fluxed magnetite pellets

An additive and flux-based technology, applied in the field of using additives to reduce the roasting temperature of magnetite concentrate pellets, magnetite concentrate pellet roasting …

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Effect of Magnetite Concentrate Particle Size on Pellet Oxidation

2.2. Experimental Method. The iron ore concentrate was screened into four size fractions using standard sieves, namely, >106 μm, 74–106 μm, 45–74 μm and <45 μm, which …

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Interactions between Magnetite Oxidation and Flux Calcination …

Two of the most important are magnetite oxidation and calcination of carbonate fluxes. The first reaction consumes oxygen diffusing into the pellet, while the second reaction …

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Chemistry, microstructure, and reduction characteristics of …

This study was made to ascertain the compositional ranges within which dolomite fluxed magnetite pellets show such an improvement over good acid pellets. A variety of compositions …

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Consolidation behavior of magnesium-containing pellets prepared …

However, the production of magnesium-containing pellets is low. With the deterioration of iron ore resources year by year, the SiO 2 % content of magnetite concentrate …

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Definition of fluxed pellet

An iron-ore pellet made by mixing minor amounts of a ground flux (forsterite, calcite, dolomite, or lime) with the magnetite or hematite concentrate to decrease smelting times and coke …

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Influence of flux additives on iron ore oxidized pellets

Six additives, i.e., limestone, lime, magnesite, magnesia, dolomite and light-burned-dolomite, were added for investigating their influences on the pellet quality. For green balls, adding lime …

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Chemistry, microstructure, and reduction characteristics of …

Article "Chemistry, microstructure, and reduction characteristics of dolomite-fluxed magnetite pellets." Detailed information of the J-GLOBAL is an information service managed by the …

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Iron ore pellets and fines

Our iron ore pellets and fines are made from magnetite and have high iron ore content – pellets at around 67 percent concentration and fines over 70 percent. This means they have lower …

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RI 9473 Use of Oxygen-Enriched Gas for the Oxidation of Acid and Fluxed

The U.S. Bureau of Mines, in cooperation with Cleveland-Cliffs, Inc. (Hibbing, MN), investigated ways of enhancing the quality (compressive strength, after-tumble and …

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Chemical composition of materials used for pelletizing.

Evolution of the internal state of magnetite pellet during induration is defined by the kinetics of physico-chemical transformation it undergoes owing primarily to oxidation [< ~1273 K (1000 °C ...

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(PDF) Interactions Between Iron Oxides and the Additives

Phase Equilibria and Slag Formation in the Magnetite Core of Fluxed Iron Ore Pellets ISIJ International. Mechanics of Materials Alloys Materials Chemistry Metals …

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Study of the Oxidation Process of Magnetite Fluxed Pellets by …

Abstract In order to obtain the most complete information about the processes occurring during the oxidative roasting of magnetite iron ore pellets, comprehensive studies …

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Iron Ore Pellets and Pelletization Process

The pellets may be acid or fluxed pellets. Acid pellets – Basicity of acid pellets is usually less than 0.1. The fired pellet strength is, to a certain degree, due to hematite bridges …

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An effective strategy for preparing fluxed metallized pellets from

This paper reports the phase transformation and morphology evolution of converter slag in the preparation of high-quality fluxed metallized pellets. The fluxed metallized pellets were …

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Mixed burden softening-melting property optimization based on …

Fluxed pellets have a wider cohesive zone in the blast furnace, which results in a lower amount of direct reduction occurring in the blast furnace chamber, resulting in less …

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Modelling and numerical simulation of isothermal oxidation of an

A mathematical model based on the computational fluid dynamics method, heat and mass transfer in porous media and the unreacted shrinking core model for the oxidation …

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Magnetite Particle Size Distribution and Pellet Oxidation

The induration of magnetite pellets is a complex physico-chemical process that involves oxidation, sintering, and heat transfer. The thermal- and gas-composition profile that …

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Reduction Behavior of Dolomite-Fluxed Magnetite: …

In the behavior of reduction, Park et al. [15, 16] investigated the high-temperature behavior of a magnetite-coke composite pellet fluxed with dolomite by a customized thermogravimetric analyzer ...

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Characterization of Fluxed Iron Ore Pellets as Compared to Feed

This means that pellets should be fired at sufficiently high enough temperature to generate liquid phases to get the sufficient strength but not so high as to cause pellets to stick. …

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US11891677B2

The present invention discloses additive for reducing the roasting temperature of fluxed magnetite pellets and a method of using it, consisting of components: B2O3, Mn2O3, the B2O3 and …

WhatsApp: +86 18221755073

Reduction Behavior of Dolomite-Fluxed Magnetite: Coke Composite Pellets

High-temperature behavior of magnetite—coke composite pellet fluxed with dolomite was investigated by customized thermogravimetric analyzer (TGA) at 1573 K (1300 °C). The overall …

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CN114032387A

The invention discloses an additive for reducing the roasting temperature of flux-type magnetite pellets and a using method, which is composed of components: B 2 O 3 and Mn 2 O 3, the B …

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Lime magnetite pellets – an alternative iron ore feedstock

In our previous papers, a novel, alternative agglomeration route for magnetite ores was presented where magnetite was converted to a reducible CaFe3O5 (CWF) phase through the addition of …

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Effect of Basicity on Metallurgical Properties of Fluxed Pellets with

The CS of high MgO fluxed pellets didn't change significantly when basicity increased from 0.6 to 1.0, on the other hand the CS increased from 2800 N to 3500 N with the …

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Mineral Phase Structure Evolution During the Roasting …

during the roasting stage. During the equalization and cooling stages, some magnetite is oxidized into hematite, leading to fragmentation of the magnetite grains and a reduction in the grain …

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Impact of Initial Titanium Magnetite Ore Material Composition on …

Research work was carried out on the test units with the conditions close to the industrial ones to study the material composition impact of the concentrates produced from various types of the …

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Effect of Magnetite Concentrate Particle Size on Pellet Oxidation

During the roasting process of pellets, the particle size of the magnetite concentrates affected its component content, which correlated well with the oxidation roasting …

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Mineral Phase Structure Evolution During the Roasting Process of

Magnesia fluxed pellets possess advantages such as a high iron grade and a low energy consumption in smelting, making their production instrumental in increasing the ratio of …

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Fluxed iron ore pellets

The physical properties and chemical composition of iron ore pellets make them ideally suited for blast furnace production. Fluxed iron ore pellets made from concentrate with Fe content over …

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Definition of fluxed pellet

Definition of fluxed pellet. An iron-ore pellet made by mixing minor amounts of a ground flux (forsterite, calcite, dolomite, or lime) with the magnetite or hematite concentrate to decrease …

WhatsApp: +86 18221755073

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