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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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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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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PDF | Gas-based reduction roasting magnetic separation process was conducted to separate and recover iron and titanium from oxidized vanadium... | Find, read and cite all the research you need on ...
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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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Eficient utilization of vanadium–titanium magnetite can be achieved by high-temperature pyrometallurgical smelting separa-tion of the material. The fusibility of vanadium–titanium …
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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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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 studied. The results …
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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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In this work, diboron trioxide 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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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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P.H. Guo, Experimental Study on New Process of Metallization Reduction-Separation for Vanadium-Titanium Magnetite (Northeastern University, Shenyang, 2012) Google Scholar G.J. Cheng, Study on Kinetics of High Chromia Vanadium-Titanium Magnetite Reduction and Migration Behavior of Valuable Elements in Lumpy Zone.
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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). 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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As a result, effective separation of titanium minerals and iron minerals was achieved, while the separation of vanadium and titanium was also realized. 2. Materials and methods2.1. Raw material. The raw material is a mixed of ilmenite and hematite obtained via high-intensity magnetic separation of a certain titanium-vanadium hematite in Australia.
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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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Vanadium-containing titanium magnetite is the main source of V and Ti in the internal market. About 75% Fe, 82% V, and 44% Ti pass into iron concentrate during ore enrichment [].Therefore, the question of how to improve comprehensive utilization of vanadium-titanium magnetite concentrate (VTMC) is of decisive importance for the vanadium and …
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Request PDF | Separation of Vanadium and Chromium by Selective Adsorption by Titanium-Based Microspheres | The separation and recovery of V(V) and Cr(VI) from solution can achieve the dual purpose ...
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Request PDF | Efficient separation of vanadium, titanium and iron from vanadium-bearing titanomagnetite by pressurized pyrolysis of ammonium chloride-acid leaching-solvent extraction process | A ...
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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) …
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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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The selective stripping of vanadium and tungsten was achieved using 2.5 M NaOH and 1 M Na 2 SO 4 + 1 M NaOH, respectively, resulting in stripping ratios of 99.59 % for vanadium and 99.15 % for tungsten. An extremely high separation factor of vanadium and tungsten (β V/W, 2388) can be achieved. Subsequently, the organic phase was preserved for ...
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The separation of titanium (Ti) (IV) in acidic leach solutions of vanadium slag by solvent extraction with trioctyl tertiary amine (N235) is proposed. Because the leach solutions contain a lot of vanadium (V) and iron (Fe) impurities, the effects of various conditions on the separation of Ti, V, and Fe were investigated.
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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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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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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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Hydrochloric acid leaching has been widely used in the recovery process of vanadium due to its efficient selectivity. It was necessary to further separate vanadium from hydrochloric acid leaching solution. Four extractants of P204, P507, Cyanex272, and N1923 were compared for extraction of vanadium from a simulated hydrochloric acid solution, and it is …
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The results showed that the effective selective separation of vanadium, iron and titanium could be obtained in which 97.39 % V and 88.62% Fe were dissolved into the solution and over 91.76% Ti was remained in leaching residue after leaching at 0.5 M H 2 SO 4, 110 °C for 1 h, then added 10% iron powder and continue to leaching for 2 h. Tafel ...
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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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Vanadium-titanium magnetite is a significant source of iron, vanadium and titanium, accompanied by a variety of valuable elements, which is internationally recognized as a strategic mineral [1, 2].Currently, the comprehensive utilization of vanadium-titanium magnetite mainly includes blast furnace process and non-blast furnace process [3, 4].In the smelting process, …
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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 realize the separation of titanium and vanadium. The results showed that an iron concentrate with TFe (total iron) grade of 58.71%, iron recovery of 86.72% and V 2 …
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