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In the separation of raw ore, Zhang Yanhua and Han Yuexin et al. used weak magnetics to enrich vanadium-titanium magnetite with strong magnetism, and then selected gravity separation, high gradient magnetic separation, electric separation, flotation or their combined processes to obtain titanium concentrate products according to the differences ...
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A new process comprising metallizing reduction, magnetic separation, and electroheat melting separation is proposed with the aim of achieving high recoveries of iron, vanadium, and …
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The new process of metalizing reduction and magnetic separation based on hot briquetting demonstrates the evident technological advan-tages of high efficiency separation of iron from other valuable elements in the vanadium titano-magnetite. Keywords: magnetite; hot briquetting; ore reduction; magnetic separation 1. Introduction
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A large number of unexploited low-grade vanadium-titanium magnetite deposits have been found in the Chao-yang area of China in recent years. The reserves are estimated at more than 20 billion tons. A mineralogical …
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With the aim of separating Fe and V, a vanadium-titanium magnetite concentrate was selectively reduced, followed by magnetic separation. The processes accompanying reduction of the vanadium-titanium magnetite concentrate were investigated using thermodynamic simulation, experiments, scanning electron microscopy, and electron probe microanalysis. …
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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.
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Magnetic separation with 0.2 T magnetic field intensity yielded 75.5 % magnetic fraction. Titanomagnetites treated at low temperatures had 50.9 % magnetic portion iron. Magnetic fraction iron extraction was 97.8 %. ... Vanadium can be recovered from vanadium slag using leaching and precipitation procedures to obtain its compounds, if needed [22 ...
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Gas-based reduction roasting magnetic separation process was conducted to separate and recover iron and titanium from oxidized vanadium titano-magnetite (VTM).
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Coal-based reduction and magnetic separation behavior of low-grade vanadium-titanium magnetite pellets were studied in this paper. It is found that the metallization degree increased obviously ...
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A grinding time of 15 min was determined as optimum for the grinding conditions of this study, based on the degree of liberation, the grade, and recovery of vanadium. The effect of varying magnetic intensities on the separation behavior of the pre-concentrates was analyzed through magnetic separation of the ground VTM samples.
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The results show that a concentrate with a TiO2 grade of 9.90% can be separated via weak magnetic separation and coarse particle tailing dumping. The concentrate grade is then increased to 14.32% via strong magnetic separation …
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Direct reduction–magnetic separation followed by low temperature chlorination was a promising process to comprehensively utilize vanadium–bearing titanomagnetite (VTM). Herein, the conversion of titanium oxides to TiC/TiN/Ti(C,N) is extremely critical.
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The recovery of vanadium by zeolite–resin magnetic nanocomposites from industrial Bayer liquor was studied in this paper. The magnetic nanocomposite was fabricated by synthesizing Fe3O4 nanoparticles and adding zeolite and amberlite IRA-400. Different techniques such as X-ray diffraction, Fourier transform infrared spectroscopy, field emission scanning …
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DOI: 10.1016/j.mineng.2020.106268 Corpus ID: 214010125; Influence of different comminution flowsheets on the separation of vanadium titano-magnetite @article{Guo2020InfluenceOD, title={Influence of different comminution flowsheets on the separation of vanadium titano-magnetite}, author={Xiaofei Guo and Shu Juan Dai and Qian-qian Wang}, journal={Minerals …
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A new process comprising metallizing reduction, magnetic separation, and electroheat melting separation is proposed with the aim of achieving high recoveries of iron, vanadium, and titanium from vanadium titanomagnetite. ... The high-titanium slag in the non-magnetic fraction and vanadium slag could be further treated by a hydrometallurgical ...
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PDF | On May 1, 2023, Jianfa Jing and others published Chromium and iron recovery from hazardous extracted vanadium tailings via direct reduction magnetic separation | Find, read and cite all the ...
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magnetic separation experiments were carried out on a magnetic separator to obtain magnetic and non-mag-netic materials. The chemical composition of the reduction and magnetic separation products was determined by ion spectroscopy using inductively coupled plasma-atomic emission spectroscopy (ICP-AES; optima 8300dv, Per-kinElmer).
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Up to 49.0 ± 4.7 % of vanadium could be removed from the aquifer by the applied magnetic field, and the vanadium in the aquifer after the reaction was mainly in the acid-extractable and reducible states. pH had a strong effect on the magnetic recovery of V(V), while the influence of initial V(V) concentration was weak.
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The concentrate grade is then increased to 14.32% via strong magnetic separation and floating separation of sulfur minerals. Finally, a TiO2 grade of 46.34% is obtained through closed-circuit ...
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Grinding, sieving and magnetic separation were combined to recover metallic iron from the converter slag, and yielded approximately 41.5% of iron in which the iron content was as high as 85%, and ...
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Vanadium titano- magnetites (VTM) are found throughout the world with huge reserves [3]. The TiO2 grade in the VTM concentrates is varied with the deposits, from 1 wt.% [3] to as high as around 20 wt.% [4]. ... process [5], the reduction and melting separation process [6], the reduction and magnetic separation process [7], and the sodium ...
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lowed by magnetic separation was investigated to utilize vanadium tailings with total iron grade of 54.90 wt% and TiO 2 content of 17.40 wt%. The results show that after reduction roasting–magnetic separation with sodium sul-fate dosage of 2 wt% at roasting temperature of 1150 C for roasting time of 120 min, metallic iron concentrate
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In a typical reduction roasting magnetic separation process, VTM pellets are reduced by coal at high temperature (1200–1300 °C) for 3–4 h after pre-treatment process.Then the reduced pellets are ground to 0.074 μm or 0.044 μm by a ball mill or rod mill device [13].Finally, magnetic product and non-magnetic product are separated under a certain …
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To efficiently utilize extraction capacity and selectivity, a green process in this study for extraction and separation of vanadium, iron, and titanium using a mixture extractant …
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Generally, low-intensity magnetic separation is first conducted to beneficiate the vanadium titanomagnetite concentrate after grinding of the raw ore. An ore processing plant in Baima produced iron concentrate with an Fe …
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magnetic separation of vanadium-bearing converter slag Junyi Xiang 1, Qingyun Huang2, Wei Lv, Guishang Pei 1, Xuewei Lv and Songli Liu3 Abstract
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Traditional technologies used for recycling vanadium-titanium magnetite tailings (VTMT) include physical and chemical methods. Physical technologies consist of magnetic separation, and gravity separation, physicochemical technology is mainly flotation and chemical technologies involve sodium roasting, calcium roasting, and salt-free roasting.
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In this paper, magnetization roasting - low-intensity magnetic separation was performed on a pre-concentration concentrate obtained from an Australian hematite containing titanium and vanadium to ...
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Vanadium and cobalt are often isomorphic to iron and occur in titanomagnetite and pyrite, respectively. The beneficiation of this kind of ore generally uses weak magnetic separation to separate the vanadium iron concentrate, and then uses the combined method of gravity separation, strong magnetic separation, flotation and electric separation ...
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A new process comprising metallizing reduction, magnetic separation, and electroheat melting separation is proposed with the aim of achieving high recoveries of iron, vanadium, and titanium from ...
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