Vanadium - Wikipedia

Vanadium is a chemical element with the symbol V and atomic number 23. It is a hard, silvery-grey, ductile, malleable transition metal. The elemental metal is rarely found in nature, but once isolated artificially, the formation of an oxide layer (passivation) somewhat stabilizes the …

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Talk:Vanadium - Wikipedia

Titanomagnetites which are used to produce steel are giving a slag with high enough vanadium content for leaching and vanadium extraction; In south afrika titanomagnetites are first reduced in an rotary kiln and later fully reduced in submerged-arc furnace. There a vanadium enriched pig iron is produced which later is oxidized in shaking lades.

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Hydrometallurgical Processing Technology of ...

Vanadium-containing titanomagnetite ores are among the most promising types of unconventional ores, and an important source of titanium, vanadium and iron [1–3]. The content of these components in the ore is sufficient for industrial extraction, though it can vary widely.

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Recovery of vanadium from black shale__

Under the optimum leaching conditions of 100 g/L sulfuric, 15 g/L hydrofluoric acid, 1.5 g/L NaClO, 6 h leaching at 90 ℃ and oxygen partial pressure of 1 200 kPa, and the liquid-to-solid ratio of 2, about 91% vanadium extraction is achieved. The vanadium extraction yields of solvent and stripping are 99.83% and 97.66% when using 10% (volume ...

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Extractive Metallurgy of Vanadium-Containing Titaniferous ...

Jun 06, 2006· The blast-furnace conversion of titanomagnetites in modern blast furnaces, larger than 1,000 m^sup 3^, is based on the smelting of prepared vanadium-bearing materials obtained from …

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Recovery of vanadium from black shale

titanomagnetites in iron and steel industry and black shale. Black shale is carbonaceous shale with several valuable metals, such as vanadium, nickel, molybdenum and silver. The common grade of vanadium in this ore is usually less than 2%. Black shale is the most important resource for vanadium extraction in China, which

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Vanadium extraction from a Fe-V(2.0mass%)-P(0.1mass%) melt ...

Vanadium extraction methods were developed for iron-vanadium-phosphorus (Fe-V-P) melts derived from processing of V-bearing titanomagnetites and steel slags. Studies on phase relationships of V slags were carried out to provide important understanding of the extraction processes.

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Identification of Vanadium on Iron Ore Sample from a ...

Vanadium with world resources of more than 63 million tons has proved to be an important alloying ... titanomagnetites" Journal of Mines, Metals and Fuels. Mineral Beneficiation. P. 143- 146. ... "Studies on the extraction of vanadium pentoxide from vanadium bearing titanoferous magnetite ore of Bihar and Orissa. NML Journal. P. 27. .4

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A Study on Vanadium Extraction from Fe-V-P Melts Derived ...

Vanadium extraction methods were developed for iron-vanadium-phosphorus (Fe-V-P) melts derived from processing of V-bearing titanomagnetites and steel slags. Studies on phase relationships of V slags were carried out to provide important understanding of the extraction processes.

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Titanium-vanadium slags produced upon the ... - SpringerLink

J. Hall, "The Extraction of Iron and Vanadium from Titanoferrous Magnetite Ore with Particular Reference to the Contribution by the Republic of South Africa," in Proceedings of International Symposium on Exploitation and Utilization of Vanadium-Bearing Titanomagnetite, Panzhihua, China (Met. Industry Press, Beijing, 1989), pp. 38–48.

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The extraction of vanadium from titanomagnetites and other ...

Vanadium extraction is faster and more effective at a lower temperature when compared to conventional roasting techniques. When the stone coal is subsequently leached, leaching is faster and requires less sulphuric acid for the same degree of vanadium extraction (Wang et al., 2015, Yuan et al., 2015). 4. Conclusions and recommendations

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Extraction of titanium, vanadium and iron from ... - DeepDyve

Read "Extraction of titanium, vanadium and iron from titanomagnetite deposits at pipestone lake, Manitoba, Canada, Minerals Engineering" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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(PDF) Stabilizing the composition of blast-furnace ...

Stabilizing the composition of blast-furnace products from titanomagnetites with a nonconical loading trough. ... From each dis- to vanadium-bearing hot metal and then vanadium slag charge, eight samples are taken. ... while vanadium extraction increased from CaO 34.375 34.632 33.80 81.74% to 82.86%.

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A novel process for the recovery of iron ... - SpringerLink

A sodium modification–direct reduction coupled process was proposed for the simultaneous extraction of V and Fe from vanadium- bearing titanomagnetite. The sodium oxidation of vanadium oxides to water-soluble sodium vanadate and the transformation of iron oxides to metallic iron were accomplished in a single-step high-temperature process.

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Possibility of Selective Oxidation of Vanadium from ... - Diva

Vanadium extraction methods were developed for iron-vanadium-phosphorus (Fe-V-P) melts derived from processing of V-bearing titanomagnetites and steel slags. Studies on phase relationships of V slags were carried out to provide important understanding of the extraction processes.

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An extraction process to recover vanadium from low-grade ...

Aug 30, 2015· An extraction process to recover vanadium from low-grade vanadium-bearing titanomagnetite was developed. In this study, a mixed solvent system of di(2-ethylhexyl) phosphate (D2EHPA) and tri-n-butyl phosphate (TBP) diluted with kerosene was used for the selective extraction of vanadium from a hydrochloric acid leaching solution that contained low vanadium concentration with …

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Vanadium Production Process

Vanadium(V) oxide (vanadia) is the inorganic compound with the formula V 2 O 5. Commonly known as vanadium pentoxide, it is a brown/yellow solid, although when freshly precipitated from aqueous solution, its colour is deep orange. Learn More; The production of vanadium and steel from titanomagnetites ...

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A comparative study of vanadium recovery from titaniferous ...

on the vanadium extraction from titanomagnetite is shown in Figure 1. The vanadium extraction appears to be insensitive to variations in NaCl concentration in the studied range, as shown by the almost constant vanadium extraction of 64% and 63% at NaCl concentrations of …

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The extraction of vanadium from titanomagnetites and other ...

Vanadium can also be produced from vanadiferous sandstone, shale and vanadate deposits, though these are of lesser industrial importance compared to titanomagnetites. Vanadium is usually extracted from ores, concentrates and slags by roasting with sodium carbonate or another sodium salt to convert vanadium into water soluble sodium vanadates.

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Oxidation State of Vanadium in Natural V-bearing ...

The occurrence of small quantities of V 4+ in the vanadium-rich titanomagnetites of the Bushveld Complex is consistent with previous petrological modelling [1], which shows that extreme enrichments of vanadium in magnetite will only occur for a relatively small range of oxygen fugacity conditions, close to the Ni-NiO buffer. Valence-selective ...

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extraction V,Ti from magnetite__

Titanomagnetites are a source for titanium, vanadium and iron. Indeed, most of the world's vanadium production originates from titanomagnetite ores. Currently, there are two major routes for production of vanadium [3]. ... Sadykhov, G.V. et al., Extraction of vanadium from titanium slags from the melting of titanomagnetites, lzvestiya Akademii ...

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Industrial, Ecological and Resource-Efficient Aspects of ...

The causes of the global vanadium consumption increase are described and new applications of this metal are given in the article. The main natural sources of vanadium are titanomagnetite, which is a strategic mineral raw material. The current volumes of vanadium extraction from natural raw materials do not match the demand of the market.

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New Technology for Recovering Iron and Vanadium from ...

Feb 28, 2017· Hydrometallurgical processes for the extraction of vanadium have been proposed in the last decade as a lower cost alternative in replacement of …

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Vanadium : leaching and solvent extraction - UBC Library ...

The extraction of vanadium (V&IV), iron (III&II) with phosphinic acid (CYANEX 272), phosphonic acid (IONQUEST 801), phosphoric acid (D2EHPA) and phosphine oxide (CYANEX 923) extractants is reported. In addition, the extraction reactions for vanadium (V) and (IV) extraction using CYANEX 923 and D2EHPA were also studied.

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VanadiuminSouthAfrica (MetalReviewSeries

Steel &Vanadium Corporation Limited, giving details ofthevarious proce~ses used, including theroa~t-Ieach, ... tantvanadium-bearing titanomagnetites areconfinedto ... Extraction ofVanadiumbytheRoast-Leach Technique

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The spatial variation of mineralogy in the vanadiferous ...

Vanadium extraction from titanomagnetites by roasting or smelting is very sensitive to the presence of contaminating elements (e.g., Si, Ca and transition metals such as Cr and Mn), which either consume reactants, form refractory phases, or concentrate in the end-product. Consequently, a

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A Study on Vanadium Extraction from Fe-V-P Melts Derived ...

Vanadium extraction methods were developed for iron-vanadium-phosphorus (Fe- V-P) melts derived from processing of V-bearing titanomagnetites and steel slags. Studies on phase relationships of V ...

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Recovery of Vanadium from Qarah-aghaj Titanomagnetite ore ...

Titanomagnetites are one of the most important resources for recovery of vanadium. Qara-aghaj hard rock titanium ore locating 36 Km far from Euromieh north-west of Iran, is one of these resources.

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Vanadium - L'Élémentarium

Le vanadium renfermé dans le coke est extrait par de l'acide sulfurique puis précipité par de l'ammoniac, en vanadate d'ammonium. Le principe d'extraction est le même pour le vanadium contenu dans les cendres des centrales thermiques fonctionnant au charbon.

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[PDF] A Study on Vanadium Extraction from Fe-V-P Melts ...

Vanadium extraction methods were developed for iron-vanadium-phosphorus (Fe-V-P) melts derived from processing of V-bearing titanomagnetites and steel slags. Studies on phase relationships of V …

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