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The high-pure magnetite concentrate (HPMC) was studied for a substitution of iron scale to produce the magnetic powder of strontium hexaferrite via the conventional ceramic process in this work. The magnetic powder …
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We present an optimized magnetic separation process to improve the recovery of high-content vanadium and titanium concentrates from vanadium‑titanium magnetite (VTM) ore. ... without reduction and heat treatment) ore. They reported that a vanadium‑titanium magnetite concentrate containing 1.14% V 2 O 5, 22.22% TiO 2, 42.51% Fe, ...
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In this study, vanadium titanium magnetite concentrate (VTM), obtained after magnetic separation, was used in the Chengde area. The chemical composition and particle size of VTM are presented in Table 1 and Fig. 1, respectively.Scanning electron microscopy (SEM) analysis (Fig. 2 (a)–2(c)) shows that the VTM in this area is characterized by poor vanadium …
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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 were used for subsequent experiments.The chemical composition, particle size distribution, and X-ray diffraction of iron ore concentrates with different particle size ranges were measured and …
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Approximately 3500 kg of magnetite concentrate was received from the Gol-e-Gohar plant)in Kerman, Iran) and used in the pelletizing process after preparation of the sample. The as-received concentrate was separated into two typical samples of 250 kg each, using cone and quartering and riffling sampling methods [42].
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In addition, the inner core of magnetite had a higher mass ratio of Fe/O, which indicated that the order of reduction behavior was outward to inward. Moreover, the reduction of hematite to magnetite was obvious during the HMPT process according to mass radios in Fig. 6 (e). The map scans of concentrate and tailings were shown in Fig. 6 (f)-(g ...
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Magnetite (composition Fe3O4) has a specific gravity ranging from 5.0 to 5.1, and is sufficiently heavy to permit of its concentration from gangue by specific-gravity methods, which have had an extensive application.
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In this paper, the ordinary magnetite concentrate with a TFe grade of 65.56% was investigated and detailed mineralogy research was conducted using chemical analysis, X-ray …
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A novel ironmaking process is under development at the University of Utah aimed at producing iron directly from iron oxide concentrate in a flash reactor. This process will reduce hazardous emissions and save energy. The kinetics of magnetite
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This study investigates the extraction of vanadium from low-vanadium grade magnetite concentrate pellets using sodium salt. 71.1% of vanadium can be extracted under the following optimal ...
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Many banded iron formation deposits are very fine grained, often requiring a final concentrate grind size P80 of 25-35 μm (see liberation curve of magnetite in Figure 2). The amount of energy required to produce a magnetite …
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To obtain the concentrates, the weak magnetic separation – reverse flotation method is generally used for such ores. That is to use magnetic separation to recover iron, and flotation to recover sulfide or apatite. 3. …
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The vanadiferous magnetite concentrate sample was obtained from Anhui province, China. As shown in Table 1, the total iron grade was 67.1%, and the V 2 O 5 and TiO 2 contents were 0.32% and 0.78%, respectively. The main impurities included 1.57% SiO 2 and 0.89% Al 2 O 3.As shown by the XRD pattern in Fig. 1, the main mineral phases were magnetite and hematite.
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Assessment of different eco-efficient comminution process circuits to treat magnetite iron ore. Determination of the process operating costs and the capital costs for each process route. Comparison of the benefits of the …
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During the roasting process of pellets, the particle size of the magnetite concentrates affected its component content, which correlated well with the oxidation roasting process and metallurgical ...
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The reduction process of VTM followed a stepwise reaction mechanism, characterized by distinct pathways for titanium and iron. ... Traditional VTM processing method often divide the VTM raw ore into magnetite concentrate and titanium concentrate through beneficiation, and then utilized these concentrates separately. ...
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The sodium roasting–water leaching process for vanadium–titanium magnetite (VTM) concentrate faces challenges such as low vanadium recovery, excessive addition of sodium salt, and high alkali content in the tailings. Therefore, reducing the presence of toxic elements like vanadium and alkali metal sodium in the extraction tailings is crucial for the …
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Through the above process, the magnetite processing plant can obtain more than 65% of high-quality iron ore concentrate, and the recovery rate is as high as 80%. Of course, the specific beneficiation process needs to be determined by the magnetite beneficiation test.
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The resulting magnetite concentrate contains un-liberated magnetite (magnetite particles that are still attached to other minerals) which requires further milling so that the magnetite can be liberated and extracted. Un-liberated magnetite is usually larger than liberated magnetite, so the two can be separated according to particle size.
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A comprehensive investigation was undertaken on the mineralogy of ordinary magnetite concentrate to achieve ultra-pure iron concentrate. Various analytical methods, including chemical analysis, X-ray fluorescence spectroscopy, optical microscopy, scanning electron microscopy–energy dispersive X-ray spectroscopy (SEM-EDS), and mineral liberation …
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Traditional VTM processing method often divide the VTM raw ore into magnetite concentrate and titanium concentrate through beneficiation, and then utilized these concentrates separately. ... The reduction process of Fe 2 TiO 5 was Fe 2 TiO 5 → Fe 2 TiO 4 → FeTiO 3 → FeTi 2 O 5 → Fe, where the reduction difficulty increased in turn. 3.2.
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sulfuric acid leaching process was used to extract vanadium, and the process flow chart is shown in Figure1. The experiments were conducted in three stages. In the first stage, the vanadium titanium magnetite concentrate powder was mixed with Ca(OH)2, MgO, and bentonite in proportion. The balls were made on an 800 mm 165 mm disc ball-making ...
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To effectively control the morphology of iron ore concentrate and obtain suitable pellet properties, it is critical to understand how magnetite concentrate morphology affects …
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The major minerals in the Fe concentrate were magnetite, metallic Fe, and ferrous oxide, and the Ti in the Ti concentrate originated from anatase TiO 2. The thermodynamic calculation results were ...
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This study focuses on ordinary magnetite concentrate and utilizes a process combining magnetic separation, flotation, and leaching based on its mineralogical …
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Leaching titaniferous magnetite concentrate with alkali solution of high concentration under high temperature and high pressure was utilized to improve the grade of iron in iron concentrate and the grade of TiO2 in titanium tailings. The titaniferous magnetite concentrate in use contained 12.67% TiO2 and 54.01% Fe. The thermodynamics of the …
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process for oolitic magnetite concentrate is shown in Figure 2. First, 10 g of oolitic magnetite. concentrate and 2 g of NaOH particles were loaded in a high-temperature and high-pressure. reactor ...
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The reduction of magnetite concentrate particles by H2 has been investigated in drop-tube reactor (DTR) to obtain a rate equation that can be applied to the design and analysis of an ironmaking flash reactor. The temperature range in this work is 1623 to 1873 K, where the magnetite concentrate particles become molten droplets.
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Iron ore concentrates have been generated utilizing the conventional beneficiation process and also by the approach of reduction roasting-magnetic separation. The Fe contents of the hematite and the synthesized magnetite concentrate …
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Iron ore magnetite processing (LIMS, MIMS, WHIMS, Davis Tubes) The increased worldwide demand for steel in recent decades has led to an increase in the exploitation of magnetite iron ore deposits as an alternative to hematite …
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