Magnetite Sintering Systems


Effect of Heating Rates on the Sintering of Oxidized ...

Magnetite pellet induration is a combination of complex physicochemical phenomena – oxidation, sintering and the heat transfer associated with them. Depending on the pellet properties and the environment it encountersduring the induration,the oxidation and sintering course may vary and the mechanisms will interact. To be able to predict

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ExperimentalStudyonOxygen-EnrichedSinteringof Vanadium ...

oxygen-enriched sintering, which decreases the CO pro-duced by incomplete combustion of coke. us, oxygen-enriched sintering reduces the local reduction reaction, resulting in lowered FeO content. In addition, iron ore powder used during sintering is mainly magnetite (Fe 3O 4). After oxygen-enriched sintering, the oxidizing atmosphere

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Sinter Quality and Process of Sintering Iron Ores – IspatGuru

Chemical reactions during sintering results into formation of sinter cake which is a multiphase material with a heterogeneous microstructure. It is composed of several mineral phases out of which main phases are hematite, magnetite, iron ore, SFCA, dicalcium silicate and a glassy phase.

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Satmagan 135 | Magnetite Detector - Rapiscan Systems

Satmagan 135. A fast, accurate and reliable instrument for measuring the magnetite content in samples. Accurate measurement of ferrous material content in iron ore is extremely difficult and time-consuming by conventional chemical methods in the laboratory. This is overcome by measuring the total magnetic moment of the sample in a high magnetic ...

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Vanadium–titanium magnetite ore blend optimization for ...

Vanadium titanium magnetite (V–Ti) ore is one kind of important polymetallic minerals in China and the mainstream route of comprehensive utilization process is blast furnace (BF) → basic oxygen furnace (BOF).V–Ti sinter is one of the main burdens employed for …

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Studying the Sintering Behavior of Oxidized Magnetite ...

Studying the Sintering Behavior of Oxidized Magnetite Pellet During Induration T. K. Sandeep Kumar 1, N.N. Viswanathan 2, H. Ahmed 1, 3, C. Andersson 4 …

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Sintering Reactions Magnetite Concentrates Various …

magnetite in sintering of systems Fe304-CaO,Fe304 CaO-Si02and Fe304-CaO-Si02-Al203madeup with pure chemicals. Theresults showthat magnetite remain-ed unoxidised in industrial N2' Massive calcium ferrite formed frorn Fe304and CaOin the Fe304-lOmasso/o CaOsystem at T~** =1250-1300'C.

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Sintering behaviour of magnetite (Fe3O4) under magnetic ...

T1 - Sintering behaviour of magnetite (Fe3O4) under magnetic field heating of 2.45 GHz microwave. AU - Takayama, Sadatsugu. AU - Fukushima, Jun. AU - Sano, Saburo. AU - Sato, Motoyasu. PY - 2012/9/1. Y1 - 2012/9/1. N2 - The wavelength is much larger than the dimensions of heated objects in GHz range. It suggests that vectors of magnetic or ...

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Factors influencing Sinter and Sintering Process – IspatGuru

In the studies involving the addition of magnetite fines in a raw mix for sintering, a coke saving of 0.43 % was seen for each 1 % increase in magnetite in the raw mix, due to the fact that when hematite ore is replaced by magnetite fines, the bed temperature increases as a result of the exothermic oxidation reaction of magnetite to hematite.

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Magnetite Suppliers - Thomasnet

Magnetite manufacturers, service companies and distributors are listed in this trusted and comprehensive vertical portal. The comprehensive directory provides access to full contact and ability information for sourcing professionals, engineers and researchers wishing to get information on Magnetite.

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Types of Iron Ore: Hematite vs. Magnetite | INN

For that reason, hematite ore is important for many mining companies.As Australia's Magnetite Network explains, "[d]irect shipping ores, when …

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Estimation of Sintering Kinetics of Magnetite Pellet Using ...

During induration of magnetite pellets, oxidation of magnetite followed by sintering of the oxidized magnetite (hematite) is desirable. Sintering of magnetite which hampers the oxidation of magnetite is aimed to be kept as low as possible. In succession to our earlier study on sintering behavior of oxidized magnetite (hematite), this paper focusses on the sintering behavior of magnetite phase ...

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Effect of Magnetite on Mineral Phase Formation in ...

issue is the use of magnetite concentrate instead of hematite. Since magnetite concentrate contains large quantity of fine particles, deterioration of granulation property and permea-bility in the sintering machine is concerned. Thus, magnetite has not been positively used as a sintered ore raw material.

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Investigations of MgO on Sintering Performance and ...

High-chromium vanadium-titanium magnetite (HCVTM) in the Hongge region has been used as an essential mineral resource in ironmaking. The effects of MgO on sintering performance and metallurgical properties were investigated by sintering pot tests, X-ray diffraction (XRD), and scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS). HCVTM sinters with varying MgO …

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Estimation of Sintering Kinetics of Oxidized Magnetite ...

12%The quality of magnetite pellet is primarily determined by the physico-chemical changes the pellet undergoes as it makes excursion through the gaseous and thermal environment in the induration furnace. Among these physico-chemical processes, the oxidation of magnetite phase and the sintering of oxidized magnetite (hematite) and magnetite (non-oxidized) …

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CN104060083B - Sintering method of vanadium titanium ...

The invention discloses a sintering method of a vanadium titanium magnetite. The method includes successively carrying out material placing, material pressing and sintering after granulating a sintering raw material. The sintering raw material contains the vanadium titanium magnetite, a high-grade ore, a fuel and a flux, wherein the flux is active lime; relative to 100 parts by weight of the ...

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Estimation of Sintering Kinetics of Magnetite Pellet Using ...

Magnetite sintering will start at a lower temperature than hematite sintering, and remaining magnetite in the core can therefore shrink away from the hematite shell, forming a duplex structure with non-oxidized magnetite core and oxidized shell.[1,3–7] This is further complicated by the heat generated within the pellet from the exothermic ...

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Sintering of Soft Magnetic Material under Microwave ...

High-chromium vanadium-titanium magnetite (HCVTM) in the Hongge region has been used as an essential mineral resource in ironmaking. The effects of MgO on sintering performance and metallurgical properties were investigated by sintering pot tests, X-ray diffraction (XRD), and scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS). HCVTM sinters with varying MgO contents …

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KR101502336B1 - Sintering Binder and Production Method of ...

The present invention relates to a binder for sintering which makes it possible to utilize magnetite micro-iron ores and a method for producing sintered ores using magnetite micro-iron ores using the binder, and more particularly,, A powder binder and a mixed binder obtained by mixing them and 1) a step of blending a fine ore composed of hematites (Fe 2 O 3 ), a process dust and a sludge into ...

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Sintering with Kovdor magnetite concentrates in the batch ...

12%Electron-microscope data show that the magnetite crystals in iron ore have different microstructure, depending on the temperature and time of ore formation. Thus, in sedimentary–metamorphic iron quartzites and magmatic skarns, the structure of the magnetite crystals is homogeneous and the composition is close to stoichiometric. In Kovdor ore, the magnetite crystals …

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Sintering Fundamentals of Magnetite Alone and Blended with ...

3.3. Magnetite Oxidation during Sintering Magnetite oxidation may be expressed by DH 298 ° 27400cal Obviously, the oxidation of magnetite is an exothermic re-action. The heat generated is roughly equivalent to that of 0.29mol carbon being combusted to CO 2 (C O 2 CO 2, DH°298 94490cal) when complete oxidation is achieved.

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magnetic ceramics | Britannica

magnetic ceramics, oxide materials that exhibit a certain type of permanent magnetization called ferrimagnetism. Commercially prepared magnetic ceramics are used in a variety of permanent magnet, transformer, telecommunications, and information recording applications. This article describes the

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Effect of basicity on sintering behavior of low-titanium ...

The effect of basicity on sintering behavior of low-titanium vanadium–titanium mixture, and the transference and distribution of element in sintering process were researched by sinter pot test, mineralogical analysis, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analysis. The results show that CaO preferentially ...

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Oxidation and Sintering of Magnetite Oxidising Condi-

ISIJ International, Vol. 37 (1 997), No. 9, pp. 854-861 Oxidation tlons and Sintering of Magnetite Ore under Oxidising Condi- L, X. YANGand E. MATTHEWS BHPResearch Newcastle Laboratories. P.O, Box 188, Wallsend, NSW2287, Australia. (Received on,4pril 7. 1997.• accepted In final form on June2. 1997) E-mail: yang.lisa.1((7'bhp.com,au Theoxidation of magnetite mineral in a wide range of iron ...

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Influence and mechanism of Indonesia vanadium titano ...

titano-magnetite in BF China, it is sure that Indonesia VTM has a potential in BF process. The chemical composition of Indonesia VTM is listed in Table 1. In the present work, some sintering parameters were set based on production conditions and operational system of typical iron and steel making plant in China

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Sintering of Soft Magnetic Material under Microwave ...

We have developed a simple process for sintering of soft magnetization materials using microwave sintering. The saturated magnetization (Ms) of sintered magnetite was 85.6 emu/g, which was as high as 95% of magnetite before heating (90.4 emu/g). On the other hand, the averaged remanence (Mr) and coercivity (Hc) of the magnetite after heating were 0.17 emu/g and …

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Effect of magnetite on mineral phase formation in ...

To clarify the effects of magnetite on mineral phases formation, sintering experiments using hematite and magnetite reagent were carried out. To research the effects of atmosphere and temperature, samples were sintered under oxidizing (air) and reducing (CO–CO2) atmosphere at 1 …

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The Effect of Addition of F3O4 and Sintering Temperature ...

Nowadays, the composite of magnetite/hydroxyapatite has become one of the main topics in biomedical field especially as drug delivery system. In this paper, the effect of sintering temperature and Fe 3 O 4 addition on the properties of coprecipitation produced by magnetite/hydroxyapatite composite is investigated. The magnetite was first dispersed into 100 mL aquadest and mixed with 33.7 mmol ...

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Mechanisms in oxidation and sintering of magnetite iron ...

Sintering started earlier in the magnetite phase (950 °C) compared to the hematite phase (1100 °C). The sintering rate increased with increasing fineness in the magnetite concentrate. A finer grind in the raw material would, therefore, promote the formation of duplex structures with a more heavily sintered core pulling away from the less ...

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(PDF) Experimental Study on Oxygen-Enriched Sintering of ...

2.2. Experimental Methods and Devices. e e ects of dif-. ferent oxygen enrichment conditions on the sintering per-. formance of vanadium-titanium magnetite are investigated. by changing the ...

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