Smelting Reduction Characteristics and Mechanism of Vanadium–Titanium Magnetite Carbon-Bearing Pellet

Qie, Junmao; Gao, Jianjun; Wan, Xinyu; Wang, Feng

doi:10.1007/s12666-020-02132-2

Cited by 12 publications

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The nonmetallic minerals mainly include olivine and pyroxene (common pyroxenehypodiopside, commonly referred to as titanium common pyroxene), plagioclase, titanium common hornblende, biotite, and apatite. [5][6][7][8] Because vanadium-titanium magnetite composition is composed of more than 20 elements; it is the most complex ore of its type in the world and it contains more than ten valuable elements; therefore, it has a very important integrated utilization value. [9][10][11][12] Currently, the comprehensive utilization of vanadium-titanium magnetite mainly focuses on the recovery of iron, vanadium, and titanium.…”

Section: Introductionmentioning

confidence: 99%

Optimal Process Parameters for Direct Carbothermal Reduction of Vanadium–Titanium Magnetite in a Rotary Kiln

Shi

Tang

Chu

2023

steel research int.

View full text Add to dashboard Cite

Direct reduction in rotary kiln plays a crucial role in the reduction and smelting of vanadium–titanium magnetite. The effect of the process parameters on the metallization rate and reaction mechanism during the reduction process in a rotary kiln is investigated. 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. During the direct reduction of vanadium–titanium magnetite, favorable conditions such as absence of smelting phenomenon on the surface of the reduction products, high metallization rate, and high quality of direct reduction iron are achieved. Through direct reduction, the transformation process of iron oxide in vanadium–titanium magnetite is Fe3O4 → iron oxide → Fe, and the transformation process of titanium–iron oxide is Fe9TiO15 → Fe2.75Ti0.25O4 → Fe2.5Ti0.5O4 → iron titanate → Fe. In addition, vanadium and ferrochrome oxides undergo reduction to form oxides or carbides.

show abstract

Section: Introductionmentioning

confidence: 99%

Optimal Process Parameters for Direct Carbothermal Reduction of Vanadium–Titanium Magnetite in a Rotary Kiln

Shi

Tang

Chu

2023

steel research int.

View full text Add to dashboard Cite

show abstract

“…As an important strategic metal, vanadium is known as modern industrial monosodium glutamate, and it has been widely used in many fields such as steel, aerospace, automobiles, bridges and new energy [1][2][3]. The main mineral resource of vanadium is vanadium-titanium magnetite, in which titanium, iron and vanadium are symbiotic [4,5]. At present, the main process for extracting vanadium from vanadiumtitanium magnetite is as follows.…”

Section: Introductionmentioning

confidence: 99%

A new process for extracting vanadium by direct calcification using the heat of molten vanadium slag

Zhang

et al. 2022

J min metall B Metall

View full text Add to dashboard Cite

A novel technology for extracting vanadium from molten converter vanadium slag was studied at the laboratory scale by oxidation and calcification. The effect of the cooling method, CaO addition and reaction time on the phases of calcified vanadium slag was studied. Under the action of oxygen and CaO, the molten vanadium slag underwent calcification reaction to form acid-soluble calcium vanadate phase, the feasibility of its main chemical reaction was calculated by Factsage8.1. The calcified vanadium slag was leached by H2SO4 solution and characterized by XRF, XRD, SEM and EDS techniques. Compared with the traditional process, the new process saved much energy, and it was faster and more efficient. The XRD results showed that CaV2O5, Ca7V4O17 and Ca3V2O8 were gradually formed in the molten vanadium slag with increasing CaO addition. However, when too much CaO was added, Ca2SiO4 and CaTiO3 were also formed. These phases wrapped part of the vanadium and reduced the leaching rate of vanadium. When the mass ratio of Ca to V was 0.75, under the optimal acid leaching conditions (particle size of calcified vanadium slag less than 0.075 mm, leaching temperature 90?C, H2SO4 concentration 200 g.L-1, liquid-to-solid ratio 6:1 ml.g-1, leaching time 60 min, stirring speed 300r.min-1), the leaching rate of vanadium from calcified vanadium slag could exceed 90%. The new process not only saved energy and reduced emissions, but also reached the average level of the existing vanadium extraction process.

show abstract

Mass Action Concentration Calculation and Experimental Study on Molten Vortex Direct Reduction of Vanadium–Titanium Magnetite

Han,

Dou,

Yang

et al. 2024

Metall Mater Trans B

View full text Add to dashboard Cite

Smelting Reduction Characteristics and Mechanism of Vanadium–Titanium Magnetite Carbon-Bearing Pellet

Cited by 12 publications

References 9 publications

Optimal Process Parameters for Direct Carbothermal Reduction of Vanadium–Titanium Magnetite in a Rotary Kiln

Optimal Process Parameters for Direct Carbothermal Reduction of Vanadium–Titanium Magnetite in a Rotary Kiln

A new process for extracting vanadium by direct calcification using the heat of molten vanadium slag

Mass Action Concentration Calculation and Experimental Study on Molten Vortex Direct Reduction of Vanadium–Titanium Magnetite

Contact Info

Product

Resources

About