Phase transformation and slag evolution of vanadium–titanium magnetite …

Blast furnace process is the main approach for utilizing vanadium–titanium magnetite (VTM) and VTM pellet is an important burden due to its excellent performance.

Smelting Reduction Characteristics and Mechanism of Vanadium–Titanium

The process is composed of two parts: the pre-reduction process of vanadium–titanium magnetite in the rotary kiln and the slag–iron separation process in the pure oxygen bath smelting furnace. Firstly, a certain proportion of vanadium–titanium magnetite, coal and fluxes is made into carbon-bearing pellet in disk pelletizer with …

Selective extraction of vanadium from vanadium …

titanium magnetite is a main raw material for vanadium extraction (Gilligan and Nikoloski, 2020). At present, the fundamental process for smelting vanadium–titanium magnetite involves iron-making and extraction of vanadium from vanadium slag by the sodium salt roasting–water leaching process (Chen et al., 2013; Li et al., 2015; Ji et al ...

Metals | Free Full-Text | Vanadium–Titanium Magnetite …

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 added to the iron ore concentrate during pellet production to produce calcium vanadate and magnesium vanadate after roasting. The …

Separations | Free Full-Text | Mineralogical Characteristics of …

Spinel and titanium magnetite have a solid solution structure, wherein spinel fills the crystal gaps between titanium magnetite through fine veins [24,25], as shown in Figure 6a and Figure 7a. This solid solution structure is nearly impossible to fully liberate, leading to a decreased theoretical iron grade in titanomagnetite and a …

Analysing the HIsmelt process for smelting vanadium–titanium magnetite …

In response to the problem of rich vanadium–titanium magnetite (VTM) resources in China contrasting with low blast furnace utilization, a HIsmelt process for smelting VTM is proposed. The influence of the process parameters on smelting reduction is analysed under laboratory conditions by simulating smelting reduction.

Smelting Vanadium–Titanium Magnetite by COREX Process …

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 characterization was …

Enhancing Reduction Separation and Efficient Recovery of

In this work, diboron trioxide and calcium fluoride are applied as composite additives to explore a process suitable for processing low-grade, high-vanadium, ultra-high-titanium vanadium–titanium magnetite. The metallized coal-based direct reduction–electromagnetic separation experiment was conducted. Results show that a …

The extraction of vanadium from titanomagnetites and other sources

A novel process for recovery of iron, titanium, and vanadium from titanomagnetite concentrates: NaOH molten salt roasting and water leaching processes ... Reed, C.; Palmer, R. 2008. Trends with Titaniferous Magnetite Processing for Vanadium Extraction. In: Metallurgical Plant Design and Operating Strategies (MetPlant 2008) 18 - …

A New Process of Extracting Titanium from …

A new process of extracting titanium from vanadium–titanium magnetite (VTM) in the Panxi area in Sichuan, China is introduced in this work. Various experiments, including reduction–magnetic separation, …

Leaching Titaniferous Magnetite Concentrate by Alkaline …

This new process can realize the recovery of iron and titanium; the rates were 88.3% and 93.7%, respectively. Chen et al. used molten salt roasting and water leaching processes to treat titanium magnetite concentrate, and the recovery rate of titanium in the titanium-rich slag reached 96.3% under the optimal process conditions.

Separations | Free Full-Text | Process Mineralogy of …

Vanadium titanomagnetite (VTM) is a valuable multi-element symbiotic ore mainly composed of iron, vanadium, and titanium, as well as small amounts of …

Influence of coke content on sintering process of chromium …

The sintering of chromium-containing vanadium-titanium magnetite using different coke contents was studied through the sintering pot tests, X-ray diffraction analysis and mineralogical phase analysis. Results showed that, as the coke content increased from 3.2% to 4.4%, the liquid phase and combustion zone thickness increased while the …

A Comparative Study of Extracting Vanadium from …

Recovering vanadium from vanadium titanium-magnetite (VTM) ore using (NH4)2C2O4 is a clean hydrometallurgical process, but the drawback is the low recovery and slow kinetics due to the formation ...

Separations | Free Full-Text | Separation of …

The results show that a concentrate with a TiO 2 grade of 9.90% can be separated via weak magnetic separation and coarse particle tailing dumping. The concentrate grade is then increased to 14.32% via strong …

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 …

High-Efficiency Smelting Separation of Vanadium–Titanium …

Efficient utilization of vanadium–titanium magnetite can be achieved by high-temperature pyrometallurgical smelting separation of the material. The fusibility of vanadium–titanium magnetite during reduction and smelting reflects the difficulty of …

Oxidation induration process and kinetics of Hongge vanadium titanium

Abstract. The induration process and oxidation kinetics of Hongge vanadium titanium-bearing magnetite (HVTM) pellets have been investigated by employing X-ray diffraction, scanning electron microscope, energy-dispersive spectroscopy, thermogravimetric and differential thermal analysis and thermogravimetric and differential …

Oxidation induration process and kinetics of Hongge vanadium titanium

The induration process and oxidation kinetics of Hongge vanadium titanium-bearing magnetite (HVTM) pellets have been investigated by employing X-ray diffraction, scanning electron microscope, energy-dispersive spectroscopy, thermogravimetric and differential thermal analysis and thermogravimetric and differential scanning calorimetry. …

Evaluation of Titania-Rich Slag Produced from Titaniferous Magnetite …

Titanium-bearing magnetite ore is generically defined as magnetite with > 1% titanium dioxide (TiO 2) and is usually vanadium-bearing.The iron and titanium occur as a mixture of magnetite (Fe 3 O 4) and ilmenite (FeTiO 3) with vanadium oxide usually occurring within the solid solution of the titanium-bearing magnetite phase.These ores …

Fusion Separation of Vanadium-Titanium Magnetite and …

This had a negative impact on the reduction-melting process of vanadium-titanium magnetite that hindered the separation process of slag and iron . The titanium-containing phases in the slag system are: black titanium, TiO 2, Ti 2 O 3, a small amount of titanium iron oxide, TiCN, TiC and some magnesium aluminum spinel. It can be noticed …

Analysing the HIsmelt process for smelting vanadium–titanium magnetite

November 2014. Barium carbonate is used as a kind of tracer in smelting of vanadium-titanium magnetite to calibrate the blast furnace slag carried in molten iron during tapping process. In order ...

Smelting Vanadium–Titanium Magnetite by COREX …

nium magnetite is the main raw material for the preparation of vanadium, titanium and their oxides and has a high utilization value.[1–4] There are many technologies for the utilization of vanadium–titanium magnetite. Blast furnace-converter process is relatively mature, but there are some problems, such as low

Towards sustainable processing of vanadium-bearing titaniferous

The results showed that the reasonable smelting parameters for vanadium–titanium magnetite smelting of the process introduced in the paper were above 1450 °C of smelting temperature, above 0.8 ...

Titanium processing | Technology, Methods, & Facts

titanium processing, the extraction of titanium from its ores and the preparation of titanium alloys or compounds for use in various products. Titanium (Ti) is a soft, ductile, silvery gray metal with a melting point of 1,675 °C (3,047 °F). Owing to the formation on its surface of an oxide film that is relatively inert chemically, it has ...

(PDF) Recovery of Fe and V via selective reduction

PDF | On Nov 18, 2021, Liwei Liu and others published Recovery of Fe and V via selective reduction–magnetic separation of vanadium-titanium magnetite concentrate | Find, read and cite all the ...

A Novel Process for Direct Reduction of Titanium …

Ilmenite is an important mineral resource containing Fe and Ti, and titanium concentrate can be obtained after beneficiation. Through the preparation of titanium concentrate oxidized pellets, gas-based shaft furnace reduction experiments, and melting and separation experiments, the phase changes during the roasting process of titanium …

Process Mineralogical Analysis of a Typical Vanadium Titano-magnetite …

In this manuscript, process mineralogical analysis of a typical vanadium titano-magnetite concentrate was investigated thoroughly. The specific phase composition of VTM is 84.11% titanomagnetite, 6.52% hematite-limonite, 1.41% ilmenite, 3.87% olivine and 3.31% alumina. Iron in the VTM ore primarily exists in the form of titanomagnetite ...

Development process and trends of 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 …

High-Temperature Interactions Between Vanadium-Titanium Magnetite …

The high-temperature interactions between vanadium-titanium magnetite carbon composite hot briquettes (VTM-CCBs) and pellets were systematically investigated under simulated blast furnace conditions with respect to the reduction behavior, softening–melting–dripping characteristics, gas permeability, and Ti(C, N) precipitation …