separation vanadium magnetic
Study on the Grinding Kinetics and Magnetic Separation of Low …
In recent years, a low-grade vanadiferous titanomagnetite concentrate (LVTC) produced in the northwest area of Liaoning has attracted more and more attention. However, it is difficult to recover and utilize valuable minerals such as iron, titanium, and vanadium, due to their special physical and chemical properties and complex mineral …
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Separation of Ilmenite from Vanadium Titanomagnetite by …
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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Preparation, surface functionalization and application of Fe3O4
Fe 3 O 4 NPs are widely used in magnetic separation, protein immobilization, magnetic catalysts, environmental treatment, biological and food testing, and medical science. Future preparation methods and applications of Fe 3 O 4 NPs will be more perfect and will be better applied to various fields for the benefit of mankind.
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Behaviors of vanadium and chromium in coal-based direct …
The reduction behaviors of FeO·V 2 O 3 and FeO·Cr 2 O 3 during coal-based direct reduction have a decisive impact on the efficient utilization of high-chromium vanadium-bearing titanomagnetite concentrates. The effects of molar ratio of C to Fe n(C)/n(Fe) and temperature on the behaviors of vanadium and chromium during direct …
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Efficient Separation and Recovery of Vanadium, Titanium, Iron
The dumping of a large amount of steel slag not only wastes metal resources, but pollutes the ecological environment. In this study, a method for recovery of vanadium, titanium, iron, magnesium, and synthesizing anhydrite from steel slag is proposed. The leaching efficiency of V, Ti, Fe, and Mg was 99.42%, 99.36%, 99.89%, and 99.95%, …
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Mineralogical characterisation and magnetic separation …
The recycling of metallic iron is commonly the first step to fully use the converter slag, which is the biggest waste discharge in the steelmaking process. This …
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Recovery of Iron from Chromium Vanadium-Bearing
The recovery of iron from chromium vanadium-bearing titanomagnetite concentrate was investigated by direct reduction, followed by magnetic separation. The results indicated that the metallization rate of iron can reach 98.9% at a temperature of 1200°C for a reduction duration of 60 min with the addition of 16% graphite powder and …
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Reduction roasting–magnetic separation of vanadium
Zhu, F.; Ma, Z.; Qiu, K.; Peng, W. Separation of Ilmenite from Vanadium Titanomagnetite by Combining Magnetic Separation and Flotation Processes. …
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Optimized magnetic separation for efficient recovery of V …
The purpose of this study was to analyze the process mechanism and evaluate the dependance of the vanadium recovery on the grinding conditions and magnetic intensity through systematic experiments to finally propose an optimal magnetic …
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The extraction of vanadium from titanomagnetites and other sources
The commercialisation of vanadium redox flow batteries for large scale electric energy storage and power grid stabilisation is expected to increase the global demand for vanadium in the coming years. ... Some magnetic separation may also be necessary to remove metallic iron entrained in slag before salt roasting (Gabra and …
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How to Recover Iron from Magnetite: 4 Methods and Stages
The combined process of magnetic separation - gravity separation - flotation is suitable for polymetallic magnetite ore. Gangue minerals are mainly quartz, chlorite, biotite, etc., with a small amount of pyrite, chalcopyrite, vanadium-titanium magnetite, and other metal minerals. The mineral composition in the ore is complex, and medium and ...
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Efficient separation of vanadium, titanium, and iron from vanadium
It refers to the selective reduction of iron oxides below the mineralization temperature through pulverized coal while controlling the reduction conditions to make the metallic iron crystals grow. Thus, metallic iron and non-magnetic vanadium-rich titanium material are obtained by magnetic separation [14]. Nevertheless, the high content of ...
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Mineralogical characterisation and magnetic separation of vanadium
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 the non-magnetic concentrate contains 8.56% vanadium with a yield of 95.3% and 8.63% titanium with a yield of 85.3%.
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Influence of different comminution flowsheets on the separation of
Introduction. Vanadium titano-magnetite (VTM) is a polymetallic symbiotic iron ore primarily containing iron, vanadium, and titanium. Iron minerals and titanium-bearing minerals coexist closely, primarily in the form of the strongly magnetic titanium magnetite and weakly magnetic ilmenite; however, vanadium-bearing minerals are mostly …
ادامه مطلبMineralogical reconstruction of Titanium-Vanadium hematite and magnetic
Presently, there are many research studies on vanadium-titanium magnetite in China, most of which first adopt a single process of low-intensity magnetic separation to separate strong magnetic iron minerals such as titanium magnetite and ferrous magnetite (which contain the concentrates of vanadium and titanium), followed by gravity …
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Metalizing reduction and magnetic separation of …
The new process of metalizing reduction and magnetic separation based on hot briquetting demonstrates the evident technological advantages of high efficiency …
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Metalizing reduction and magnetic separation of vanadium titano
To achieve high efficiency utilization of Panzhihua vanadium titano-magnetite, a new process of metalizing reduction and magnetic separation based on hot briquetting is proposed, and factors that affect the cold strength of the hot-briquetting products and the efficiency of reduction and magnetic separation are successively …
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Separation of ilmenite from vanadium titanomagnetite by …
magnetic separation: Magnetic separation is the process of separating components of mixtures by using magnets to attract magnetic materials. The process that is used for magnetic separation detaches non-magnetic material with those that are magnetic; Vanadium: Vanadium is a chemical element with the symbol V and atomic …
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Multi-Walled Carbon Nanotubes Magnetic Composite as an
Abstract. Magnetic solid phase microextraction (m-SPME) is a well-defined strategy for the preconcentration and separation of hydrophobic species from aqueous samples without the use of toxic organic solvents.This work identifies a new analytical procedure for trace level vanadium(V) by inductively coupled plasma mass spectrometry …
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Separation and recovery of iron and titanium from oxidized vanadium
Gas-based reduction roasting magnetic separation process was conducted to separate and recover iron and titanium from oxidized vanadium titano-magnetite (VTM). The effects of reduction temperature, gas composition, reduction time, grinding fineness, and magnetic field intensity on the efficiency of Fe-Ti separation were …
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Deep and efficient removal of vanadium from molybdate solution …
The efficiency of molybdenum and vanadium separation can be reflected by the separation factor (SF). ... The magnetic hysteresis loops of the γ-Fe 2 O 3 adsorbent measured by VSM before and after adsorption are shown in Fig. 1 (e). The two magnetization curves show that the remanence and coercivity are near zero, suggesting …
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Behavior of vanadium during reduction and smelting of vanadium
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.
ادامه مطلبPresent Status and Development of Comprehensive Utilization of Vanadium
The main component of titanium iron concentrate is magnetite. For titanium iron concentrate in Panzhihua, the content of iron is about 50%, and the content of TiO 2 is about 12%. Three process methods, namely the Blast Furnace iron making process, the rotary kiln-electric furnace process, and the reduction-magnetic separation process, …
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A New Technique for Preparation of High-Grade Titanium Slag
This paper proposes a new technique for preparation of high-grade titanium slag from Panzhihua vanadium titanomagnetite concentrate by reduction–melting–magnetic separation processing. Chemical analysis, x-ray diffraction, and scanning electron microscopy in conjunction with energy-dispersive spectroscopy …
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Optimized magnetic separation for efficient recovery of V …
Optimized magnetic separation for efficient recovery of V and Ti enriched concentrates from vanadium-titanium magnetite ore: Effect of grinding and magnetic …
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Separation and recovery of iron and titanium from oxidized vanadium
Gas-based reduction roasting magnetic separation process was conducted to separate and recover iron and titanium from oxidized vanadium titano-magnetite (VTM). The effects of reduction temperature ...
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Mineralogical characterisation and magnetic separation of vanadium
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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High-Efficiency Extraction of Fe, V, and Ti from Vanadium Titano
A method has been proposed for treatment with VTMC consisting of carbothermal reduction, magnetic separation, and firing with alkali metals followed by water leaching [2, 3] in which iron metal powder recycling, V-containing alkali, and also Ti-containing residues due to aqueous leaching are accomplished.Considering that the …
ادامه مطلبInfluence of different comminution flowsheets on the …
Volume 149, 1 April 2020, 106268. Influence of different comminution flowsheets on the separation of vanadium titano-magnetite. Xiaofei Guo., Shujuan Dai., Qianqian Wang. …
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Recovery of TiO2-enriched material from vanadium titano …
The titanium-bearing tailings after magnetic separation was leached by an HCl solution to leach out V and Cr and further treated with a NaOH solution to remove Si. It has been reported that the total recoveries of Fe, Ti, V, and Cr can reach 88.3%, 93.7%, 81.7%, and 84.4%, respectively, which are much higher than those from the BF smelting …
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