Green and efficient separation of vanadium and chromium …
The elucidation of the importance of vanadium and chromium, coupled with a detailed analysis of high-chromium vanadium slag and current separation techniques, contributes to the utilization of vanadium–titanium-bearing magnetite resources with a high content of chromium and also evolves the knowledge in this critical area.
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Coal-Based Reduction and Magnetic Separation Behavior …
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 with an increase in the temperature from 1100 °C to 1400 °C. The phase composition transformation was specifically analyzed with X-ray diffraction (XRD). The …
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Fusion Separation of Vanadium-Titanium Magnetite and …
How to efficiently separate or enrich titanium from vanadium-titanium magnetite is the premise for its effective utilization. At present, there are mainly two forms of the separation of raw ore and metallurgical enrichment for the utilization of titanium [5].
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Separation and Recovery of Vanadium(IV), Iron, and Titanium …
This study addressed the separation and recovery of vanadium(IV), iron, and titanium from synthetic and real leach solutions of vanadium-bearing titanomagnetite using extractant P204 (di-(2-ethylhexyl) phosphate) and P507 (2-ethylhexyl hydrogen-2-ethylhexyl phosphonate). Based on the speciation analysis of vanadium in sulfuric acid medium, the …
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Recovery of Fe and V via selective reduction–magnetic …
vanadium-titanium magnetite concentrate were investigated using thermodynamic simulation, ... V separation 1. Introduction Global vanadium reserves stand at approximately 22 million tons, of which ...
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High-Efficiency Smelting Separation of Vanadium–Titanium …
The separation of Fe, V, Cr, and Ti in the direct reduction products of South African vanadium–titanium magnetite has been successfully achieved by smelting separation …
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Melting Separation of Metalized Pellets of Vanadium–Titanium …
In this study, the melting separation behaviors of vanadium–titanium magnetite affected by the temperature, time, basicity, and C/O (mole ratio of carbon to reducible oxygen) are systematically investigated. The chemical composition, phase composition, and microstructure of slag using modern analytical techniques such as X-ray diffraction ...
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(PDF) Coal-Based Reduction and Magnetic Separation Behavior …
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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SEPARATION OF VANADIUM, ZIRCONIUM, TITANIUM, …
Ion-exchange chromatography has been the most successful separation technique for this group of elements. Hague and co-workers,1-2 Wilkins,3 and Dixon and Headridge4 have studied the …
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Efficient Separation and Recovery of Vanadium, Titanium, …
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%, respectively, under a H2SO4 …
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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 investigated.
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SEPARATION OF VANADIUM, ZIRCONIUM, TITANIUM, …
SEPARATION OF VANADIUM, ZIRCONIUM, TITANIUM, MOLYBDENUM, TUNGSTEN, AND ( OLUMBIUM BY ELUTION DEVELOPMENT ION EXCHANGE CHROMATOGRAPHY Technical Report AMRA TR 67-10 by Thomas A. Ferraro April 1967 D/A Project 1C024401A349 AMCMS Code 5025.11.299 Materials Research for Specific Army Requirements
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A New Process of Extracting Titanium from Vanadium–Titanium …
A new process of extracting titanium from vanadium–titanium magnetite (VTM) in the Panxi area in Sichuan, China is introduced in this work. Various experiments, including reduction–magnetic separation, leaching and hydrolyzing experiments, are carried out. The results show that the optimum conditions for leaching experiments are an acid/slag ratio of 4:1, …
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Mechanism on the Separation of Vanadium and …
Vanadium slag is a strategic vanadium extracting source, which is produced from the hot-metal treatment prior to the basic oxygen steelmaking (BOS) or during the converter steelmaking process by using …
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Efficient Separation and Recovery of Vanadium, Titanium, …
Vanadium precipitation conditions and chromium reduction conditions were optimized further. 94.6% vanadium and 96.5% chromium were extracted when HCVS and Na2CO3 were mixed in the molar ratio of n ...
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Optimized magnetic separation for efficient recovery of V …
In contrast, VTM is a multi-metallic iron-based ore containing iron, titanium, and vanadium as the main constituents [24, 25].Since VTM has a high iron and titanium content, many recovery studies have been conducted from the viewpoint of developing processes for titanium enrichment [26, 27].Studies on the beneficiation process for recovering vanadium from VTM …
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Enhancing Reduction Separation and Efficient Recovery of Iron, Vanadium
In this work, diboron xide and calcium fluoride are applied as composite additives to explore a process suitable for processing low-grade, high-vanadium, ultra-high-titanium vanadium–titanium magnetite. The metallized coal-based direct reduction–electromagnetic separation experiment was conducted. Results show that a good …
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Separation and Recovery of Iron from Vanadium …
Abstract Vanadium titanomagnetite (VTM) is a complex polymetallic symbiotic mineral dominated by iron, titanium, and vanadium. Iron extraction from VTM is an issue for the utilization of Vanadium titanomagnetite concentrate. In this work, flotation method combined with magnetic sorting was proposed to separate and recover the iron resources from VTM. The …
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Influence of different comminution flowsheets on the separation …
Comparative separation tests of vanadium titano-magnetite (VTM) were conducted in this study by employing a high-pressure grinding roller (HPGR) and a jaw crusher (JC); these were followed by a parallel and stage separation, respectively. ... The vanadium titanium magnetite deposit in Panzhihua has abundant ilmenite resources. A flowsheet ...
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Hydrothermal Separation of Titanium Vanadium and …
The separation of titanium, vanadium and chromium in vanadium slag (VS) is a difficult problem restricting the comprehensive utilization of VS. This paper presents the first study on the separation of titanium, vanadium and chromium from oxalic acid leachate of VS. Firstly, the separation of titanium from the leachate by hydrothermal method was ...
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Separation of vanadium and chromium by selective …
The separation and purification of V(V) can be achieved by selective adsorption from high vanadium low chromium solution (real vanadium leachate). Through removing V(V) …
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Research progress of vanadium extraction processes from vanadium …
In order to achieve the separation of slag and vanadium, the solid–liquid separation is carried out. Vanadium ions of different valence states have different colors in acidic solution. ... Vanadium and titanium magnetite: FeCl 2: Fixed Bed: 827: 2: 22: 1/2V 2 O 5 + FeCl 3 = VOCl 3 + 1/2Fe 2 O 3 [97] FeCl 3: 827: 2: 32:
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Efficient separation of vanadium, titanium, and iron from …
A novel process featuring pressurized pyrolysis of ammonium chloride-acid leaching-solvent extraction was carried out to separate vanadium, titanium, and iron from …
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Fusion Separation of Vanadium-Titanium Magnetite …
then the titanium enrichment was obtained in the slag [10,11]. Zhang Jun et al. [12–18] adopted the sodium-reduction method to treat vanadium-titanium magnetite, aiming to reduce the melting temperature, realize the enrichment of vanadium, and achieve the effect of vanadium-titanium separation. However, the sodium-enhanced reduction process is
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Separation and Recovery of Vanadium(IV), Iron, and …
process in this study for extraction and separation of vanadium, iron, and titanium using a mixture extractant of P204 and P507 was proposed. The inuences of the P204-P507 concentra-tion, P204 and P507 ratio, initial pH, phase ratio (O/A), and contact time on the extractions of vanadium, iron, and titanium were investigated.
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A New Process of Extracting Titanium from …
A new process of extracting titanium from vanadium–titanium magnetite (VTM) in the Panxi area in Sichuan, China is introduced in this work. Various experiments, including reduction–magnetic separation, leaching and …
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Optimized magnetic separation for efficient recovery of V …
We present an optimized magnetic separation process to improve the recovery of high-content vanadium and titanium concentrates from vanadium‑titanium magnetite (VTM) …
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Study on separation and purification of titanium alloys (TC4 …
Focusing on titanium alloys with high usage, such as TC4 (Ti-6Al-4V), this article proposes a titanium separation and recovery method based on molten salt electrolysis. This method thoroughly analyzes the characteristics of elements in TC4 and electrochemical principles, ensuring that vanadium in the TC4 alloy does not undergo electrochemical ...
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Fusion Separation of Vanadium-Titanium Magnetite and
In view of the problem that the enrichment and migration law of the Ti element in the slag of vanadium-titanium magnetite during the melting process is not clear, the phase transformation is not clear and the enrichment effect is not obvious, the single factor experiment and orthogonal experiment are used to optimize the melting conditions of Ti enrichment.
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Separation of vanadium, tungsten and molybdenum from …
The large accumulation of spent selective catalytic reduction (SCR) catalysts cause waste of resources and environmental pollution. In this study, an efficient method is proposed to separate vanadium (V), molybdenum (Mo), and tungsten (W) from the leachate of hydrometallurgical treated spent SCR catalysts. First, V and W could be preferentially …
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