images de traitement de vanadium titano magnétite.

The extraction of vanadium from titanomagnetites and …

the ratio of V3+ to V4+ which will in turn affect how vanadium par-titions between magnetite and ilmenite in titanomagnetites (Schuiling and Feenstra, 1980). Vanadium …

Optimized magnetic separation for efficient recovery of V …

Therefore, the recovery of vanadium from ilmenite and magnetite is important for the production of concentrates with high vanadium quality. Download: Download high-res image (558KB) Download: Download full-size image; Fig. 1. SEM-BSE images (left) of a polished thin section of the vanadium-titanium magnetite ore used in the study.

China Vanadium Titano Magnetite Mining Co Ltd

China Vanadium Titano-Magnetite Mining Company Limited is a Hong Kong-based investment holding company principally engaged in mining and ore processing, sale of self-produced products, trading of coals and steels, management of strategic investments and providing specialist mining services.

Phase transformation and slag evolution of vanadium–titanium magnetite

1. Introduction. Vanadium (V) and titanium (Ti) are important strategic metals, which are widely used in metallurgical industry, chemical industry, machinery manufacturing, battery, aerospace, etc. [[1], [2], [3], [4]].As a representative resource for extracting V and Ti, vanadium–titanium magnetite (VTM) is a polymetallic symbiotic mineral which primarily …

Mechanism for Photopromoted Release of Vanadium from …

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 …

Mineralogy and Geochemistry of a Vanadiferous Titano-Magnetite …

Ti-magnetite observed in different stages of martitisation is the primary oxide mineral together with exsolved ilmenite and spinel. No disorete vanadium-bearing mineral is observed. Vanadium is present as (a) partial substitution for Fe 3+ in magnetite, and (b) in the form of VFe 2 O 4, similar to TiFe 2 0 4 (ulvosphinel). The sulphide phase is ...

Discovery of vanadium titano-magnetite as a persulfate …

The results show that vanadium emissions increased by 86% from 1949 to 2005 to a historical peak value and then gradually decreased to 12.9 kt in 2017, and the comprehensive evaluation by incorporating contrastive analysis, Monte Carlo approach, and GEOS-Chem simulation shows thatVanadium emissions estimated in this study were …

Present Status and Development of Comprehensive Utilization of Vanadium

The main products of vanadium-titanium magnetite beneficiation are titanium iron concentrate (iron ore) containing about 50% of titanium in V-Ti magnetite, ilmenite concentrate containing about 50% of titanium, and cobalt sulfide concentrate [1,2,3,4].Titanium iron concentrate is mainly used for iron making through blast furnace …

Efficient Extraction of Vanadium from Vanadium–Titanium Magnetite …

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 …

A Comparative Study of Extracting Vanadium from …

ABSTRACT. In this study, a new vanadium extraction process from vanadium titano-magnetite(VTM) featuring calcification roasting and (NH 4) 2 C 2 O 4 solution leaching …

Sticking behaviour of vanadium titano-magnetite oxidised pellets during

Vanadium titano-magnetite ore is a kind of multi-elements-coexistent mineral which mainly contains V, Ti and Fe. There are approximately one billion tonnes of vanadium titano-magnetite resource sto...

Influence of different comminution flowsheets on the …

DOI: 10.1016/j.mineng.2020.106268 Corpus ID: 214010125; Influence of different comminution flowsheets on the separation of vanadium titano-magnetite @article{Guo2020InfluenceOD, title={Influence of different comminution flowsheets on the separation of vanadium titano-magnetite}, author={Xiaofei Guo and Shu Juan Dai and …

Reduction kinetics of oxidized vanadium titano-magnetite …

The fitting slope of ln[−ln(1 − α)]-ln t for non-isothermal kinetics was between 1.3 and 2.6. Therefore, according to the common kinetics models and the value of n listed in Table 3, the non ...

Process Mineralogical Analysis of a Typical Vanadium Titano …

In this manuscript, process mineralogical analysis of a typical vanadium titano-magnetite concentrate was investigated thoroughly. The specific phase composition of VTM is …

High-Efficiency Extraction of Fe, V, and Ti from Vanadium …

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 …

Separation and recovery of iron and titanium from oxidized vanadium …

1. Introduction. Titanium plays a considerably important role in the modern industry, which is widely used in aerospace, military, metallurgy, solar cell, pigment and other advanced materials fields [1], [2], [3].As one of the largest of titanium resources in the world, vanadium titano-magnetite represents a valuable raw material for the production of …

Mechanism for Photopromoted Release of Vanadium from Vanadium Titano

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 …

Treatment of vanadium–titanium magnetite based on …

ABSTRACT. Adopting conventional sintering process of vanadium-titanium magnetite concentrates has such problems as low tumbler index and RDI due to the high-TiO 2 …

A comparison study of applying natural iron minerals and

Natural iron minerals and zero-valent metals have been widely tested as catalysts for the Fenton-like process, but the systematical comparison study about their catalytic performance was rarely conducted, and the risk of the secondary pollution of toxic heavy metals was still not uncertain. In this paper, a comparison study of applying pyrite, …

Preparing high-quality vanadium titano-magnetite pellets …

The oxidation behaviour and the phase and microstructure evolution of VTM (vanadium titano-magnetite) pellets were studied during thermal processing in order to optimise the production method for producing high-quality pellets. The oxidation tests showed that titanium magnetite and ilmenite in VTM began to oxidise at 500°C and 700°C, …

A Comparative Study of Extracting Vanadium from Vanadium Titano …

ABSTRACT In this study, a new vanadium extraction process from vanadium titano-magnetite(VTM) featuring calcification roasting and (NH4)2C2O4 solution leaching has been proposed. Compared with the traditional sodium roasting, the calcification roasting can avoid the production of waste gas and the sodium free tailings can be used for iron …

Vanadium extraction from titano-magnetite by hydrofluoric …

DOI: 10.1016/J.MINPRO.2016.09.012 Corpus ID: 100526996; Vanadium extraction from titano-magnetite by hydrofluoric acid @article{Zhu2016VanadiumEF, title={Vanadium extraction from titano-magnetite by hydrofluoric acid}, author={Xiao-bo Zhu and Wang Li and Xuemao Guan}, journal={International Journal of Mineral Processing}, year={2016}, …

Theoretical Modeling and Experimental Evaluation of Vanadium …

Recovering vanadium from vanadium titanium-magnetite (VTM) ore using (NH 4) 2 C 2 O 4 is a clean hydrometallurgical process, but the drawback is the low recovery and slow kinetics due to the formation of inhibitor. A novel energy-efficient mathematical model was derived for green leaching of VTM in which the mechanical activation (MA) removed the …

Influence of microwave treatment on grinding and …

The effect of microwave treatment on the grinding and dissociation characteristics of vanadium titano-magnetite (VTM) ore were investigated using scanning electron microscopy (SEM), nitrogen absorption measurements, particle size distribution measurements, X-ray diffraction (XRD) analysis, Fourier transform infrared (FT-IR) …

Microwave-hydrogen Synergistic Reduction of …

Vanadium titano-magnetite (VTM) is a multi-metal ele-ment composite of metal minerals, and it has extensive utilization value because it is the main carrier of iron, vanadium, and titanium.1,2) VTM exhibits a dense structure and complex interaction between valuable elements, and thus valuable metals cannot be directly extracted from it.3,4)

Release kinetics of vanadium from vanadium titano …

The characterization results for natural vanadium titano-magnetite by Liang et al. (2010) indicated that trivalent V in titano-magnetite cannot exist in the form of vanadium …

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Vanadium extraction from titano-magnetite by hydrofluoric …

The raw vanadium titano-magnetite was crushed and grinded to − 0.074 mm accounting for 90%, and then the sample was separated with low intensity magnetic separation of 50 KA/m by using dry magnetic separator to obtain the vanadium concentrate.The vanadium concentrate was leached in hydrofluoric acid solution at certain temperature, liquid to …

High-Efficiency Extraction of Fe, V, and Ti from Vanadium Titano

Methods of chemical analysis, XRD, and pH monitoring are adopted in order to study wet extraction of Fe, V and Ti based on activated reduction, and the control conditions as well as the degree of recovery are determined. The primary-leaching in NaHCO 3 saturated solution followed by final-leaching via carbonization is possible, and the leaching ratio for …

Gas-based reduction of vanadium titano-magnetite …

The phase transformation of pre-oxidized vanadium titano-magnetite pellets during the reduction process under an H2 atmosphere and a CO atmosphere was discussed, and the reduced samples were analyzed by scanning electron microscopy (SEM) in conjunction with back scatter electron (BSE) imaging.

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