LETTER The oxidation state of vanadium in …

2006-4-29 · The oxidation state of vanadium in titanomagnetite from layered basic intrusions E TIENNE B ALAN, 1,2, * J OHAN P.R. D E V ILLIERS, 3 S IGRID G RIET E ECKHOUT, 4 P IETER G LATZEL, 4 M ICHAEL J. T OPLIS, 5 E MMANUEL F RITSCH, 1,2 …

NEW PROCESS OF EXTRACTING VANADIUM FROM

2013-4-9 · Vanadium-titanium magnetite ore is ... The new process of vanadium extraction from molten vanadium slag by direct oxidation ... B.C.Jena, W.Dresler, I.G.Reilly, Extraction of Titanium, Vanadium and Iron from Titanomagnetite Deposits at Pipestone Lake, Manitoba, Canada _,Miner. Eng., 8 …

[PDF] Effect of Cr2O3 addition on oxidation induration and ...

The oxidation induration and reduction swelling behavior of chromium-bearing vanadium titanomagnetite pellets (CVTP) with Cr2O3 addition were studied, and the reduction swelling index (RSI) and compressive strength (CS) of the reduced CVTP with simulated coke oven gas (COG) injection were investigated. The results showed that the CS of the CVTP decreases and the porosity of the CVTP increases ...

The oxidation state of vanadium in ...

The most concentrated samples (up to 2.4 wt% V 2 O 3) contain approximately 10% of vanadium as V 4+. Both V 3+ and V 4+ occur in the octahedral site of the spinel structure. Considering the low magnetite/melt V 4+ partition coefficients, this suggests that vanadium ores crystallized under specific oxidizing conditions.

Transformation of Vanadium-Bearing …

Vanadium-bearing titanomagnetite is a very important mineral resource of vanadium, titanium and iron. Currently, the major process for smelting vanadium-bearing titanomagnetite involves firstly extracting iron and then extracting vanadium of slag by …

Kinetics of Reduction of Vanadiferous Titanomagnetite …

2012-9-10 · Vanadium bearing titanomagnetite ore is one of the major sources of vanadium in the world. Titanomagnetite ore of Orissa has drawn considerable attention due to its appreciable vanadium content. The characterisation of the ore is an essential step for determining its …

The oxidation state of vanadium in titanomagnetite ...

The oxidation state of vanadium in titanomagnetite from layered basic intrusions. By Etienne Balan, Johan-P.R. De Villiers, Sigrid-Griet Eeckhout, Pieter Glatzel, Michael-J. Toplis, Emmanuel Fritsch, Thierry Allard, Laurence Galoisy and Georges Calas

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

2017-1-9 · The largest vanadium ore deposits in the world are found in the Bushveld Complex (Republic of South Africa), which hosts more than one-third of the world''s vanadium reserves. In this giant (450 x 370 x 7 km 3 ) layered intrusion, about 2 billion years old, the metal is encountered in 2 to 10 m thick layers of massive titanomagnetite.

Oxidation induration process and ...

2016-7-27 · The results indicated that HVTM was a high-chromium vanadium-bearing titanomagnetite containing 1.48 wt-% Cr 2 O 3, and the crystal stock strength was 625 N. The compressive strength of HVTM pellets could be improved by increasing the roasting temperature and roasting time.

Utilization of a vanadium-containing ...

2013-7-18 · Abstract. Beneficiation studies were carried out on a titanomagnetite ore from Tete, Mozambique, containing 19.6% TiO 2, 0.6% V 2 O 5 and 49% Fe. Characterization of the ore and examination of the beneficiation methods considered in earlier studies led to the development of a new approach, the aim of which is to separate a Ti-richer fraction for primary ilmenite recovery.

Investigation of the oxidation ...

2020-1-15 · 1. Introduction. Vanadium titanomagnetite (VTM) is a special type of iron ore found in various countries, such as China, Australia, Russia, New Zealand, South Africa, and Canada [,, ] posited in the Panzhihua-Xichang area of Sichuan Province, Hongge VTM (HVTM) is a source not only of many valuable metal elements such as iron, titanium, and vanadium; it is also rich in chromium, which is the ...

Vanadium extraction from vanadium-bearing …

2017-4-20 · vanadium-bearing titanomagnetite 2 Concept of vanadium extraction by selective chlorination The proposed novel process as shown in Fig. 1 involves three parts: 1) selectively chloridizing vanadium-bearing ore and extracting vanadium by the form of vanadium

recovery of titanium and vanadium from iron ore

Extraction of titanium, vanadium and iron from ... The sum of calcium, manganese and chromium oxide concentrations is only 0.5%. The objective of the present investigation was to identify a processing route for the Pipestone Lake titanomagnetite ore for the recovery of vanadium, titanium and iron products which can be utilized in industry.

[PDF] Efficient Extraction of Vanadium from Vanadium ...

In this paper, potassium salt roasting additives were applied to extract vanadium from vanadium–titanium magnetite concentrate. Meanwhile, the mechanisms of potassium salt roasting and acid leaching kinetics were investigated. The results indicate that potassium salt roasting additives are more efficient than sodium and calcium salt and that K2SO4 works best.

Transformation of Vanadium-Bearing Titanomagnetite ...

2019-3-26 · Transformation of Vanadium-Bearing Titanomagnetite Concentrate in Additive-Free Roasting and Alkaline-Pressure Leaching for Extracting Vanadium Minerals ( IF 2.644) Pub Date : 2019-03-26 Haiyan Zheng, Weiling Zhang, Yongchun Guo, Qiangjian Gao, Fengman Shen

extraction of vanadium from canadian titanomagnetite ore

Extraction of titanium, vanadium and iron from the recovery of titanium, vanadium and iron vanadium containing titanomagnetite ore is reduced in . Kurt Meyer. Pelletizing of Iron Ores Kurt Meyer 1.3 Pelletizing, a Contribution to Ore Preparation F o r e c o n o m i c reasons,

Vanadium extraction from a magnetite ore using alkaline ...

2021-9-8 · extract vanadium [2, 11-15]. In titanomagnetite (i.e. one of the most promising vanadium ores), vanadium is available in the form of trivalent or tetravalent ions. Vanadium is produced from this ore through vanadium pentoxide under the oxidative roasting operation [16]. During

The oxidation state of vanadium in titanomagnetite from ...

The redox conditions prevailing during the formation of vanadiferous titanomagnetites from three layered intrusions (Bushveld; Koillismaa; Skaergaard) have been estimated from the valence state of vanadium using synchrotron X-ray absorption near edge structure spectroscopy (XANES). Using a high energy-resolution X-ray emission spectrometer, we show that vanadium occurs mostly as V 3+, with ...

The Geology of Vanadium Deposits | Request PDF

Vanadium is a critical metal for the transition to a low carbon economy but is very rarely extracted from ore deposits as a primary product. Although there are such deposits, vanadium is primarily ...

Effect of Cr 2 O 3 addition on the oxidation induration ...

Abstract. As part of a research project to develop a novel clean smelting process for the comprehensive utilization of Hongge vanadium titanomagnetite (HVTM), in this study, the effect of Cr 2 O 3 addition on the oxidation induration mechanism of HVTM pellets (HVTMPs) was investigated in detail. The results showed that the compressive strength of the HVTMPs was greatly weakened by the Cr 2 O 3 ...

Transformation of Vanadium-Bearing ...

2019-3-26 · Thermodynamic analyses show that oxidation of V(III) into V(V) would happen in the roasting experiment over the range of 327–1327 °C and vanadium-iron …

Vanadium extraction from a magnetite ore using alkaline ...

2021-10-7 · extract vanadium [2, 11-15]. In titanomagnetite (i.e. one of the most promising vanadium ores), vanadium is available in the form of trivalent or tetravalent ions. Vanadium is produced from this ore through vanadium pentoxide under the oxidative roasting operation [16]. During

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

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 high …

A comparative study of vanadium recovery from ...

2017-5-22 · Titaniferous magnetite (titanomagnetite) resources contain economically significant reserves of vanadium and iron as well as titanium. Titanomagnetite is a primary source of vanadium– about 88% of the world''s vanadium is extracted from titanomagnetite (Fischer, 1975; Roskill, 2010; Zhong et al., 2014).

Vanadium Resources in Titaniferous Magnetite Deposits …

2012-10-29 · Vanadium can be recovered from titaniferous magnetite ore by either of two processes: (1) precipitating a vanadium salt from a leach of ore roasted with salt, or (2) precipitation from a leach of salt-roasted vanadium-rich slag obtained by smelting the ore to …

Mechanism for Photopromoted Release of Vanadium from ...

2020-1-13 · The release of V from vanadium titano-magnetite, a predominant natural source of V, was studied under light irradiation. The release rate of V from vanadium titano-magnetite was accelerated by light irradiation, and the oxidation of V was detected. The essence of the photopromoted release of V is that the immobile low valence V is transformed to the mobile V(V) by photoinduced active species ...

High-Temperature Oxidation Behavior of ...

2011-8-1 · When oxidation temperature is higher than 1 273 K, the limited link of oxidation reaction is the diffusion control with the activation energy 20. 85 kj/mol. These results can serve as a reference to the production of vanadium, titanium-bearing magnetite pellet. Previous article. in issue.

Influence of MgO on the oxidation and induration of …

2019-5-25 · Influence of MgO on the oxidation and induration of Hongge vanadium titanomagnetite Ironmaking & Steelmaking ( IF 1.679) Pub Date : 2019-05-25, DOI: 10.1080/03019233.2019.1615815 Wei Li, Guiqin Fu, Mansheng Chu, Miaoyong Zhu

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