High-chromium vanadium–titanium magnetite (HCVTM) is a valuable resource containing metal elements such as iron, vanadium, titanium, and chromium. To recycle these elements, direct reduction is an efficient way. The mechanism and reaction kinetic parameters for the direct reduction of HCVTM were studied. Experimental results …

Low-titanium vanadium-titanium magnetite (LVT) sinter exhibits poor properties. Carbon content ( ω (C)) can alter LVT sintering behavior as it affects the mineral phases in the LVT sinter by changing the sintering temperature and environment.

Since vanadium exists in ilmenite (see Fig. 1 and Table 2), the rapid increase of titanium grade and recovery rate (i.e., high phase content of ilmenite) at a high …

Magnetite (Fe 3 O 4) and ilmenite (FeTiO 3) were the main existing form of iron in vanadium–titanium magnetite, and the gangue existed mainly in the form of magnesium silicate compounds (Fig. 2a). In addition, V 2 O 5 was not detected since its content was deficient. The particle size distribution of vanadium–titanium magnetite …

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 …

International Journal of Minerals, Metallurgy and Materials - The reduction of vanadium titano-magnetite pellets by H2–CO at temperatures from 850 to 1050°C was investigated in this...

Likewise, much of the vanadium in titanomagnetite ores is associated with magnetite, with ilmenite containing relatively small amounts of the vanadium present in such ores. However the liberation size of titanium mineralisation in these deposits can be as low as 5 µm, with fine laths of titanium minerals included in iron minerals ( Taipale ...

The quality of vanadium–titanium magnetite sinters is poor. The high-pellet operation of the blast furnace ironmaking process is a feasible method for utilization of the High-chromium Vanadium–titanium magnetite (HVTM). To ensure the basicity of the burden, flux pellets need to be investigated. In this study, HVTM concentrate and CaCO3 …

The slag ing caused by Ti(C,N) is the main limitation of smelting vanadium–titanium magnetite by blast furnace. COREX, with unique pure oxygen injection that avoids the formation of Ti(C,N), has a huge potential advantage for the smelting of vanadium–titanium magnetite. In the present study, the detailed …

The results indicate that the optimal process parameters for direct reduction of vanadium–titanium magnetite in a rotary kiln are as follows: a reduction temperature of 1150 °C, reduction time of 4 h, carbon ratio 1.2, particle size of vanadium–titanium magnetite as 8–12 mm, and particle size of pulverized coal of <8 mm.

The concentrate is classified as high-vanadium vanadium titano-magnetite concentrate, containing 51.64% iron, 12.96% titanium, and 1.52% vanadium. The extraction of vanadium from this type of VTM typically involves wet metallurgical processes to extract vanadium first, followed by pyrometallurgical processes to recover molten iron …

The key to smelting vanadium–titanium magnetite is to prevent the over-reduction of TiO 2 and reduces the formation of TiC or Ti(C,N), which are the main driving force that causes slag thickening and ing, and further deteriorates the bed permeability.

The sodium smelting of vanadium–titanium magnetite (VTM) can realize a multi-component comprehensive utilization of VTM. To broaden the application of the vanadium-bearing pig iron produced through this process, it is imperative to maintain the titanium content in molten iron at a very low level. In this study, the effects of …

One can observe that the main phase of the calcined vanadium-titanium magnetite pellets is magnetite (Fe 3 O 4), and there are also some vanadium-bearing titanium phases, ilmenite (FeTiO 3), …

1. Introduction. Vanadium-titanium magnetite (VTM) is considered as an important strategic mineral, which associated a variety of metal minerals with high comprehensive utilization value [1].The smelting methods of VTM mainly include blast furnace process and coal-based rotary kiln process at present [2, 3].As one of the main …

Vanadium–titanium magnetite tailings (VTMT) are a common industrial waste in China, which are harmful to the environment and economic development. The efficient utilization of this industrial waste is urgently needed. Herein, ceramics were successfully prepared as partition materials using VTMT as the main raw material. In this …

The vanadium-titanium magnetite (VTM) has a high comprehensive utilization value because it is an important source of iron (Fe) and other elements such as titanium (Ti) and vanadium (V). In this study, VTM was first used as a PMS activator to evaluate the degradation of bisphenol A (BPA) in the aqueous solution. ...

As a multi-metallic iron-based ore, vanadium-titanium (V-Ti) magnetite has huge reserves in China, with a mineable grade of 9.83 billion tons (Li et al., 2018). A large amount of V-Ti magnetite tailings have been generated in the selection process of Fe concentrate, with an accumulated storage of about 570 million tons in the Panzhihua …

They reported that a vanadium‑titanium magnetite concentrate containing 1.14% V 2 O 5, 22.22% TiO 2, 42.51% Fe, and a concentrate of ilmenite containing 16.05% TiO 2 and 20.77% Fe were obtained according to the different magnetic intensities in the range of 0.4–0.8 T. However, because there is no explanation for the vanadium …

Vanadium titanomagnetite (VTM) is an important mineral for developing titanium resources, but the comprehensive recovery of ilmenite separation is extremely poor, resulting in the low-efficiency utilization of titanium …

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 …

As one of the important mineral resources, the vanadium-titanium magnetite (VTM) has been exploited on a large scale, producing a large amount of VTM tailings and causing serious environmental concerns [2, 3]. However, the valuable elements including titanium, iron and vanadium contained in these tailings make VTM tailings a useful resource [4 ...

Vanadium-titanium magnetite is a complex mineral, and distributes widely throughout the world, mainly concentrated in Russia, China, South Africa, New Zealand, Canada and Australia [].The Pan-xi area of China has rich vanadium-titanium magnetite deposits with reserves more than 9.66 billion tons, of which titanium and vanadium …

The development process and current situation of vanadium extraction from vanadium-titanium magnetite ore were introduced in the paper.The advantages,disadvantages,main process parameters and technical indexes of vanadium extraction process were represented,too.Aiming at the typical disadvantage of present vanadium extraction …

In this study, an efficient utilization of vanadium titanomagnetite concentrate was systemically investigated through potassium pyrosulfate (K2S2O7) synergized with ammonium sulfate ((NH4)2SO4) cascade roasting to separate and recover vanadium, iron, and titanium. The result shows that 95.87% of vanadium and 80.13% of iron could be …

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 …

This is an essay in the field of mineral engineering. This paper summarizes the distribution of vanadium titanium magnetite in the world and its comprehensive utilization progress. vanadium titanium magnetite is a composite ore of iron, titanium and vanadium, which is also associated with chromium, gallium, scandium, cobalt, nickel, copper, platinum group …

This paper investigated a pellet ore production process in which vanadium was extracted from vanadium and titanium magnetite concentrates using sulfuric acid leaching. Calcium and magnesium were …

The reserves of vanadium–titanium magnetite exceed 18 billion tons [], accounting for over 90 wt.% of China's titanium resource reserves [2, 3].At present, the blast furnace method of smelting vanadium–titanium magnetite only recovers Fe and a part of V [].Due to the low titanium content [5, 6] and the difficulty in dissociating the Ti …

To achieve the high-efficiency utilization of vanadium-titanium magnetite (VTM), reduction experiments were conducted to determine the carbothermic reduction mechanism of VTM. Effects of volatile matter, temperature, time, and carbon ratio (molar ratio of fixed carbon in coal to oxygen in iron oxides of VTM) on reduction degree were …