magnetite sintering systems

Review on the Oxidation Behaviors and Kinetics of
2021.4.21 Abstract. One possible route for ironmaking process is using a hydrogen-gas-based fluidized bed to produce direct reduced iron
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Recent advances in sintering with high proportions of magnetite ...
2017.12.27 ABSTRACT. Magnetite concentrate is typically high in Fe grade and releases extra heat when oxidized to hematite. This will not only improve the sinter quality but also have a potential beneficial impact on the fuel consumption of the sintering process.
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Magnetite Carbon-Free Sintering Process Based on
2020.1.24 Magnetite Carbon-Free Sintering Process Based on Electromagnetic Induction. Xuangeng Zhou, Xuewei Lv, Zhongci Li, Mingrui Yang, Gang Li, Zihang Deng, Yongda Li Linpei Li. Conference paper. First Online: 24 January 2020. 2208 Accesses. Part of the The Minerals, Metals Materials Series book series (MMMS) Abstract.
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Influence of magnetite concentrate morphology on
2023.9.1 Magnetite concentrate. Sintering. 1. Introduction. In the pelletization of magnetite iron ore concentrate, fine particles are balled with moisture and binders such as bentonite, starch, carboxymethyl cellulose, and hydrated lime into green magnetite pellets. Bentonite is the most widely used binder in iron ore pelletizing.
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Magnetochemistry Free Full-Text A Study of the Structure
2023.9.22 The magnetite contained in the concentrate partially dissolves in the silicate component and flux during agglomeration, forming a complex silicate SFCA with the general formula M 14 O 20 (M–Ca, Si, Al, and Mg), which is the binder of the ore phases of the agglomerate.
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Mechanisms in oxidation and sintering of magnetite iron ore
2008.4.9 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
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Sintering Performance of Magnetite–Hematite–Goethite and
2013.10.2 Sintering Performance of Magnetite–Hematite–Goethite and Hematite–Goethite Iron Ore Blends and Microstructure of Products of Sintering: Mineral Processing and Extractive Metallurgy Review: Vol 35 , No 4 - Get Access. Mineral Processing and Extractive Metallurgy Review. An International Journal. Volume 35, 2014
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Interface interaction between SiO2 and magnetite under
2023.9.7 Zheng-jian Liu Yu-bo Tan. 217 Accesses. Explore all metrics. Abstract. Silicon is one of the main gangue components in iron ore, usually in the form of quartz and olivine. Numerous studies have shown that SiO 2 has a two-sided effect on the consolidation of pellets during high-temperature oxidation roasting of magnetite.
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Estimation of Sintering Kinetics of Oxidized Magnetite Pellet
2014.12.24 13 Citations. Explore all metrics. An Erratum to this article was published on 28 October 2016. Abstract. 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.
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Estimation of Sintering Kinetics of Magnetite Pellet Using
2015.11.16 A single magnetite pellet was kept under inert atmosphere to minimize its oxidation. A constant flow of argon (99.995 pct) gas at the maximum allowable flow rate of 8.33 × 10 −6 m 3 /second (0.5 L/minute) was used to have inert atmosphere across the pellet in the furnace. Higher flow rate of argon is maintained to keep positive pressure
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Estimation of Sintering Kinetics of Oxidized Magnetite Pellet
2014.12.24 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
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Interface interaction between SiO2 and magnetite under
2023.9.7 As the sintering process progresses, the size of the sintering neck is practically unchanged, and the effective sintering neck at the nanoscale grows over an area of less than 1 nm 2. This indicates that quartz SiO 2 has difficulty in producing a sintering neck structure with Fe 2 O 3 in the Fe 2 O 3 –SiO 2 system.
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Crystals Free Full-Text Preparation, Sintering Behavior and
2021.2.14 High-quality oxidized pellets are the basis to achieve high-efficiency utilization of vanadium–titanium magnetite (VTM) ores. Bentonite was used as a binder of VTM. The main phase composition of VTM is titanomagnetite and ilmenite. When the amount of bentonite is 1%, the compressive strength and dropping strength of VTM
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Particle migration behavior between TiO2 and magnetite
2023.2.15 Vanadium‑titanium magnetite can be used effectively by sintering and pelletizing. A number of previous studies have demonstrated that the amount of liquid phase produced during the sintering process declined as the TiO 2 content in sintering materials increased, whereas hematite, perovskite, and sinter silicate increased to variable degrees.
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Recent advances in sintering with high proportions of magnetite ...
2017.12.27 Magnetite concentrate is typically high in Fe grade and releases extra heat when oxidized to hematite. This will not only improve the sinter quality but also have a potential beneficial impact on the fuel consumption of the sintering process. However, most concentrates are very fine and less reactive, which will negatively impact the green bed ...
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Estimation of Sintering Kinetics of Magnetite Pellet
2017.8.28 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 in isolation with an objective to estimate their kinetic parameters. The pellets ...
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Mechanisms in oxidation and sintering of magnetite iron
2008.4.1 Thermal volume changes and oxidation mechanisms in magnetite iron ore green pellets balled with 0.5% bentonite binder, as a function of raw material fineness and pellet porosity, are shown. When a ...
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Application of DMF Ore for Sintering of Cr-Bearing
Abstract: Low grade and cheap hematite ore (DMF) was researched for sintering of Cr-bearing vanadium and titanium magnetite (V-Ti-Cr) via sessile drop measuring setup， miniature sintering setup and sintering pot tests. The results showed that DMF has a good fluidity with a wide melting range， a long melting time， and the beginning and ending
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Mechanism of magnetite iron ore concentrate morphology
2022.12.1 The effect of morphology on the sintering behavior of particles has been investigated in the literature [25], [26]. Formoso et al. [27] investigated oxidation and sintering mechanisms in magnetite ore green pellets according to the fineness of raw material. They showed that at a constant porosity in green pellets, the oxidation time
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Recent advances in sintering with high proportions of magnetite ...
2017.12.27 When sintering the ore blends containing a large amount of magnetite concentrates, a low coke rate is preferred to acquire relatively high oxygen partial pressure, which is beneficial to oxidation ...
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Sintering Fundamentals of Magnetite Alone and Blended
It is important to understand the interactions between the imported hematite, goethite and hematite/goethite ores and Chinese magnetite concentrates in sintering since Chinese ore blends are typically made from these ores. Assimilation of the sinter ・]es in such blends is an im- portant interaction phenomenon.
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Vacuum sintering behavior and magnetic transformation for
2020.9.1 On the other hand, the study on high temperature sintering of ferromagnetic minerals has an important reference value for utilization of high temperature sintered the mineral systems that rich in magnetite and ilmenite, such as Martian regolith which is rich in ferromagnetic minerals: magnetite and titanium inter-metallics such as ...
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Exploring the capabilities of high-pressure spark plasma sintering ...
2023.9.1 The pressure that can be applied during SPS is limited by the strength of the graphite tooling/molds. Anselmi-Tamburini, Garay, and Munir [18] published in 2005 the first detailed report on modifying an SPS apparatus to apply high pressure and coined the term “high-pressure spark plasma sintering” (HPSPS). HPSPS can essentially be classified as
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Recent advances in sintering with high proportions of magnetite ...
Recent advances in sintering with high proportions of magnetite concentrates. Han, Hongliang. ; Lu, Liming. Publication: Mineral Processing and Extractive Metallurgy Review. Pub Date: July 2018.
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SINTERING MECHANISM OF MAGNETITE PELLETS DURING
2016.6.1 magnification and long working distance optical systems. ... It is also interesting to note that the activation energy for sintering of magnetite pellet shows no single value. From the present ...
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Fundamental investigations of differences in bonding
2003.2.19 Request PDF Fundamental investigations of differences in bonding mechanisms in iron ore sinter formed from magnetite concentrates and hematite ores Whilst increasing amounts of imported ...
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Vacuum sintering behavior and magnetic transformation for
2020.9.1 On the other hand, the study on high temperature sintering of ferromagnetic minerals has an important reference value for utilization of high temperature sintered the mineral systems that rich in magnetite and ilmenite, such as Martian regolith which is rich in ferromagnetic minerals: magnetite and titanium inter-metallics such as ...
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Sintering: Most Efficient Technologies for Greenhouse
2019.7.19 Sintering is a fundamental process for raw materials preparation in the integrated ironmaking/steelmaking route. The most efficient technologies leading to the reduction of the emissions of CO 2, NOx, SOx, PCDD/Fs, and particulate matters have been described in the present chapter.
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Minerals Free Full-Text Investigations of MgO on Sintering
2019.5.27 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
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Minerals Free Full-Text Influence of Coke Ratio
2017.6.22 High-chromium vanadium and titanium magnetite (HCVTM) sinter has poor properties. The coke ratio has an important effect on the behavior of HCVTM sintering as it affects the mineral phases in
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Sintering SpringerLink
2020.8.19 Finally, the developed automatization and control systems for the iron and steelmaking industry to improve the labor productivity, getting sinter with high yield and optimal quality (mechanical and chemical), as well as saving energy, are described. A short description of the sintering process is also presented in Fernández-González et al. .
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(PDF) Estimation of Sintering Kinetics of Oxidized
2014.4.1 Estimation of Sintering Kinetics of Oxidized Magnetite Pellet. Using Optical Dilatometer. T.K. SANDEEP KUMAR, NEELAKANTAN NURNI VISWANATHAN, HESHAM M. AHMED, CHARLOTTE
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Comprehensive evaluation of high-temperature sintering
2022.12.5 Sea sand vanadia-titania magnetite is difficult to pelletize, and it is difficult for iron and steel enterprises to use it as a raw material for ironmaking. In this paper, the high-temperature physicochemical characteristics and sintering behavior of sea sand vanadia-titania magnetite were comprehensively studied and systematically evaluated.
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Sintering of Soft Magnetic Material under Microwave Magnetic
2012.3.29 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
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Effect of Return Fines Embedding on the Sintering
As an important mineral resource, Vanadium titanium magnetite (VTM) has a high comprehensive utilization value due to it containing abundant high-value elements such as vanadium and titanium [1]. It is usually used as the iron-containing raw material for sintering process. During sintering, raw materials, including ﬂuxes, fuel, iron ores, and ...
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(PDF) Comprehensive evaluation of high-temperature sintering
2022.12.5 The research results show that the high-temperature sintering characteristics of sea sand vanadia-titania magnetite were the worst, and the grey correlation degree was the lowest.
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Effect of basicity on sintering behavior of low-titanium
2015.6.1 Calcium ferrite-TiO 2 (C x F-TiO 2) diffusion couples were prepared to investigate the reaction between TiO 2 and CaO of calcium ferrite during sintering vanadium‑titanium magnetite. The distribution, species, and number of phases in the vicinity of the C x F/TiO 2 interface were characterized by electron probe microanalysis (EPMA),
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Sintering temperature optimization for enhanced magnetic
2024.2.2 A study on Cu-doped ferrites revealed that sintering at or above 1150°C resulted in lower density due to increased grain porosity, accompanied by crystal precipitates. 20 Research by N. Rezlescu focused on rare earth-doped SrFe 12 O 19 and found that heat treatment significantly altered magnetic properties, particularly coercivity
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