A large number of unexploited low-grade vanadium-titanium magnetite deposits have been found in the Chao-yang area of China in recent years. The reserves are estimated at more than 20 billion tons. A mineralogical study of raw sample indicated that it was a typical low-grade vanadium-titanium magnetite ore with weathering. Most of …Web

The results were as follows: as the TiO2 content increased from 1.75% to 4.55%, the flame front speed and productivity decreased, while the reduction degradation index (RDI) and softening properties deteriorated. Low-grade vanadiferous titanomagnetite ore (LVTM) is as an important mineral resource for sintering ore manufacturing. …Web

This study discusses the smelting behaviors of chromium-bearing vanadium titanomagnetite pellets (CVTP) with TiO2 additions. The results show that the softening start temperature T10% increases from 1148°C to 1215°C, and the softening end temperature T40% increases from 1280°C to 1336°C. The melting start temperature TS increases …Web

The viscous flow of CaO–SiO 2 –Al 2 O 3 –MgO–TiO 2 –Cr 2 O 3 slag (CaO/SiO 2 = 1.1, Cr 2 O 3 = 0.5 mass%) were investigated to promote understanding of the effect of TiO 2 addition on the viscous behavior of chromium-containing vanadium-titanium blast furnace slag. The viscosity of the slag was measured using a rotating crucible …Web

Vanadium titano- magnetites (VTM) are found throughout the world with huge reserves [3]. The TiO2 grade in the VTM concentrates is varied with the deposits, from 1 …Web

Abstract. The lack of stability is a challenge for most heterogeneous catalysts. During operations, the agglomeration of particles may block the active sites of the catalyst, which is believed to contribute to its instability. Recently, titanium oxide (TiO 2) was introduced as an alternative support material for heterogeneous catalyst due to ...Web

Optimized doped TiO2 is necessary for efficient visible light harvesting and widening the applications spectrum of TiO2-based materials. Titanium dioxide doped with silver and/or vanadium has been synthesized by one-pot hydrothermal method without post-calcination. Codoping induced visible light absorption while maintaining the …Web

Blast furnace slag (BFS) is a bulk solid waste produced in the process of iron and steel smelting. Vanadium titanomagnetite is abundant in China [9], the BFS produced in the smelting process of this ore is characterized by high titanium (Ti), and the proportion of TiO2 in the high-grade Titanium-bearing BFS (Ti-BFS) is more than 16% [10].Web

2.1. Materials. The raw materials used in the sintering pot test including LVTM, high titanium iron ore powder (HT ore), ordinary iron ore (Indian ore, Malaysian ore, Zirong ore), dolomite, gas ash, vanadium extraction tailings (V tailings), quicklime, and coke were purchased from the Jianlong Iron and Steel Co. Ltd. (Chengde, China).Web

A facile and environmentally friendly synthesis approach for the production of vanadium doped titanium dioxide (V x Ti 1−x O 2) nanostructures was demonstrated via hydrothermal decomposition of vanadium and …Web

Doping of TiO 2 with very small amount of vanadium (0.02VTiO 2) resulted in a shift of oxidation waves from 370 and 617 mV to 357 and 613 mV, respectively. This …Web

Currently, the most commonly used form of titanium is TiO 2 powder. As the production of TiO 2 powder continues to expand, there has been an increase in concern of its influence on human and environment ... In 1993, Haynes et al. performed experiments using titanium-aluminum-vanadium (Ti-Al-V) and cobalt-chromium (Co-Cr) particles of …Web

To improve the photocatalytic activity of titanium dioxide (TiO 2 ), the vanadium (V) was selected to modify TiO. Pure and V-doped TiO of TiO were …Web

Vanadium and Nitrogen Co-Doped Titanium Dioxide (TiO 2) with Enhanced Photocatalytic Performance: Potential in Wastewater Treatment Buy Article: $107.14 + tax ( Refund …Web

1. Introduction. Vanadium titano-magnetite is a major source of iron, vanadium, and titanium resources, with about 18 billion tonnes of reserves in China [[1], [2], [3]].Currently, there are various processes for the comprehensive utilization of vanadium titano-magnetite [4, 5].However, it is difficult to achieve efficient recovery of vanadium …Web

Herein, we demonstrate a facile strategy to enhance the sodium storage performance of TiO 2 via vanadium (V) doping, using the pre-synthesized V-doped Ti …Web

Vanadium doping can widen the light absorption range of TiO2, and the absorption threshold wavelength is red shifted from 380 nm to about 650 nm. As a result, …Web

Vanadium titano-magnetite is an important iron ore resource containing iron, vanadium and titanium. Although iron and vanadium can be recovered by the traditional blast furnace process, titanium can only be stored in the form of TiO2 bearing slag, which resulting in a great waste of titanium resources.Web

Download Citation | Viscosity of CaO–SiO2–Al2O3–MgO–TiO2–FeO Slag in HIsmelt Process: Influence of TiO2 Content on Viscosity and Crystallization | Vanadium–titanium magnetite is a ...Web

The reduction behaviors of vanadium‑titanium magnetite with H 2 via a fluidized bed were experimentally studied. The effects of reduction temperature, H 2 concentration, reduction time and gas flow rate on metallization degree of the reduced samples were also investigated. The major conclusions were summarized as follows: (1) …Web

High titanium-bearing blast furnace slag is the main type of blast furnace slag produced by vanadium and titanium ore in the Panzhihua area during blast furnace smelting, which is mainly composed of oxides such as CaO, SiO 2, MgO, Al 2 O 3, and TiO 2, and when the temperature is constant, the viscosity of the slag mainly depends on …Web

Element Titanium (Ti), Group 4, Atomic Number 22, d-block, Mass 47.867. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. ... Move to Vanadium > Titanium Discovery date ... First you heat titanium dioxide with carbon to about 1000 degrees C and pass chlorine over it. This makes TiCl4.Web

Vanadium titanium magnetite was used in the experiments from Panzhihua, China. The mineralogical composition of the ore is shown in Table 1, the macroscopic morphol- ... TiO2 were roasted at 1000 C for 2 h under argon protection, the CO2 or H2O likely present in the reagents were removed to reduce the experimental errors.Web

Vanadium dioxide (VO2) is a Mott phase transition compound that can be applied as a thermochromic smart material for energy saving and comfort, and titanium dioxide (TiO2) is a well-known photocatalyst for self-cleaning coatings. In this paper, we report a VO2@TiO2 core-shell structure, in which the …Web

Aiming at the process of smelting ultra-high (>80%) or even full vanadium titanomagnetite in blast furnace, we are conducting a series of works on physics character of high TiO2 bearing blast furnace slag (BFS) for slag optimization. This work discussed the density and surface tension of high TiO2 bearing BFS using the Archimedean principle …Web

In the iron and steel metallurgical industry, vanadium–titanium magnetite containing about 10.0 wt.% TiO 2 and 0.5 wt.% V 2 O 5 is a type of raw material used for iron ore sintering . In some enterprises, the mature process of extracting Ti from blast furnace smelting, and recovering V from converter smelting has been established by …Web

Tripathi et al. (2010), developed silver sensitized titanium vanadium mixed metal oxides using titanium isopropoxide (C 12 H 28 O 4 Ti) as precursor to TiO 2, …Web

Selective catalytic reduction technology using NH3 as a reducing agent (NH3-SCR) is an effective control method to remove nitrogen oxides. TiO2-supported vanadium oxide catalysts with different levels of Ce and Sb modification were prepared by an impregnation method and were characterized by X-ray diffractometer (XRD), Brunauer …Web

Titanium has unique good mechanical and physical properties and is widely used in turbine components, such as high tension, low density, strong corrosion resistance, and good welding capacity.5–10 The vanadium alloys especially V–Ti–Cr–Fe-series alloys have a good hydrogen storage properties, and have a wide range of applications in ...Web

The EDX analysis sheds light on the stoichiometry of oxygen, vanadium, and titanium, as well as the proportions of these elements and the actual integration of V …Web

Titanium dioxide (TiO 2) as a potential anode material for sodium-ion batteries (SIBs) suffers from the intrinsic poor electronic conductivity and sluggish ionic diffusivity, thus usually leading to the inferior electrochemical performance.Herein, we demonstrate a facile strategy to enhance the sodium storage performance of TiO 2 via …Web

Vanadium titano- magnetites (VTM) are found throughout the world with huge reserves [3]. The TiO2 grade in the VTM concentrates is varied with the deposits, from 1 wt.% [3] to as high as around 20 wt.% [4]. The low TiO2 grade and the complex mineralogy pose huge difficulties in the extraction of titanium from the VTM concentrates.Web

A facile and environmentally friendly synthesis approach for the production of vanadium doped titanium dioxide (VxTi1−xO2) nanostructures was …Web

To improve the photocatalytic degradation properties of titanium dioxide (TiO 2) used as raw materials for purifying automobile exhaust (AE), the vanadium (V)–doped TiO 2 samples were prepared. The photocatalytic degradation efficiencies of V-doped TiO 2 to each component in AE were evaluated under ultraviolet (UV) and visible light ...Web

Vanadium titanomagnetite (VTM) is a valuable multi-element symbiotic ore mainly composed of iron, vanadium, and titanium, as well as small amounts of chromium, nickel and cobalt [1,2,3].The global resource reserves of the VTM ore are extremely rich (over 40 billion tons) and are mainly distributed in Russia, South Africa, China, the United …Web

Reduction roasting with sodium sulfate followed by magnetic separation was investigated to utilize vanadium tailings with total iron grade of 54.90 wt% and TiO2 content of 17.40 wt%. The results show that after reduction roasting–magnetic separation with sodium sulfate dosage of 2 wt% at roasting temperature of 1150 °C for roasting time of …Web

Vanadium titanomagnetite was obtained from South Africa. The sample was characterized using chemical composition analysis, mineral composition analysis and X-ray diffraction (XRD), and the results are given in Table 1, Table 2, and Fig. 1, respectively.As shown in Table 1, the sample contained 53.35% Fe, 13.85% TiO 2 and 0.98% V, and the …Web

2.1. Materials. In this experiment, vanadium-titanium magnetite concentrate from Wuling, Xinjiang was used as raw material, and its chemical composition is depicted in Table 1.It can be observed from Table 1 that the main valuable elements in the raw iron concentrate are Fe, V and Ti, with the mass fractions of TFe, TiO 2 and V 2 O 5 are high …Web