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Gas-solid reduction kinetic model of MgO-fluxed …

Gas-solid reduction kinetic model of MgO-fluxed pellets Qiang-jian Gao, Feng-man Shen, Xin Jiang, Guo Wei, and Hai-yan Zheng School of Materials and Metallurgy, Northeastern …

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Reduction Behavior of Dolomite-Fluxed Magnetite: Coke …

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

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Study of the Oxidation Process of Magnetite Fluxed Pellets …

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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CO 2 -Free Flux for Sustainable Iron Ore Pelletizing

The iron and steel manufacturing sector directly accounts for 7–9% of global CO2 emissions. Raw material preparation, such as iron ore sintering, pelletizing, and cock making, …

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Effect of Basicity on Metallurgical Properties of Fluxed …

preparation process of magnesium fluxed pellets. In this study, the metallurgical properties of fluxed pellets (compressive strength, reduction disintegration, reduction swelling index) are …

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Phase Equilibria and Slag Formation in the Magnetite Core …

Experiments were then conducted with pellet sized magnetite compacts, held at a temperature between 1075 and 1225°C for 20 min in a nitrogen atmosphere containing 0.5% …

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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 …

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Mixed burden softening-melting property optimization …

In this experiment, high-silica acid pellets and high-silica fluxed pellets, and three types of sinters with different basicity were used. The chemical composition of raw materials …

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New insights on consolidation behavior of Fe

The CaO/MgO flux combined with magnetite (Fe) x [Fe] 2 O 4 and maghemite γ-Fe 2 O 3 to form stable MgFe 2 O 4, CaFe 2 O 4 and CaFe 3 O 5, thereby inhibiting …

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Studies on reduction behaviour of highly fluxed iron ore pellets …

Hardening behaviour of highly fluxed iron ore pellets was studied and explained in detail by the authors in their earlier report [4]. Table 1. Chemical Analysis of Raw Materials. ...

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Effect of Basicity on Metallurgical Properties of Fluxed Pellets …

In this paper, the effect of basicity on the metallurgical properties of high MgO fluxed pellets (compressive strength, reduction swelling index, reduction disintegration and softening-melting …

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Developing the Oxidation Kinetic Model for Magnetite Pellet

Oxidation is a vital phenomenon for magnetite pellets in their excursion through the furnace during induration. One of the pre-requisites for magnetite pellets to achieve …

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Mixed burden softening-melting property optimization …

As the proportion of fluxed pellets increases from 35% to 45%, T d decreases from 1455 °C to 1427 °C, ... [23,24], with less research related to high percentage pellet smelting …

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RI 9473 Use of Oxygen-Enriched Gas for the Oxidation of …

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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Improving the Properties of Magnetite Green Pellets with a …

A novel composite binder (humic acid modified bentonite, HAMB) and two other binders (bentonite and Modified humic acid, MHA) were used to explore the effects of binders on the …

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Effect of basicity on metallurgical properties of magnesium fluxed pellets

Magnesium fluxed pellets are the focus of blast furnace burden research for reducing environmental load. The pelletizing, roasting and metallurgical properties of a …

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Mineralogical properties and co-sintering characteristics of fluxed …

To investigate the feasibility of co-sintering of fluxed iron ore with magnetite concentrates, the mineralogical properties of a novel fluxed iron ore were studied using …

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Interactions between Magnetite Oxidation and Flux …

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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Improving properties of fluxed iron ore pellets with high …

With rapid development of the pellet production under the background of green development, high-quality iron concentrates were gradually exhausted; thus, using high-silica …

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Effect of Basicity on Metallurgical Properties of Fluxed Pellets …

In fluxed pellets with a high amount of MgO, the formation of magnesio-ferrite and magnesio-silico ferrite takes place when MgO enters the magnetite lattice, while CaO reacts …

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Chemistry Of Dolomite-Fluxed Hematite And Magnetite Pellets

In this study we prepared dolomite-fluxed pellets from three different concentrates; Hibbing, a magnetic taconite, Knob Lake, an earthy hematite; and Carol Lake, a mixture of specular …

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Effect of basicity on the reduction swelling behavior and mechanism …

Fluxed pellets have long been a research hotspot in the fields of ironmaking, which is attributed to their better reducibility, swelling behavior, softening–melting performance than …

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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 …