vanadium titanium kiln

Optimized magnetic separation for efficient recovery …

Vanadium‑titanium magnetite. Titanium. Grinding. Magnetic separation. 1. Introduction. Vanadium is an important transition metal used in the manufacture of high …

Co-extraction of vanadium and chromium from high chromium containing

According to the literature, China has approximately accounted for 60% of the amount of vanadium production globally, reaching up to 68,000 tons in 2016 (see Fig. 1).Currently, 90% of vanadium is produced from vanadium-titanium magnetite ores via two main approaches according to different ores, such as pristine ores or vanadium …

Hydrogen reduction behaviors and mechanisms of vanadium …

The iron, titanium and vanadium play a significant role in modern industry, and are widely used in steel manufacturing, aerospace, military, ... The rotary kiln was better than the shaft furnace in roasting and separation performance, except that its energy consumption was higher than that of the shaft furnace [20, 21].

Present Status and Development of Comprehensive …

Blast furnace iron making process is one of the earliest methods to utilize titanium iron concentrate. In the process, almost all of the titanium goes into the blast furnace slag, vanadium is reduced into the molten iron. After iron extraction, it produces a large quantity of titanium-containing blast furnace slag with a TiO2 content of 20%25 wt%.

Reduction Behaviors of Iron, Vanadium and Titanium …

Vanadium titanomagnetite is a complex iron ore which contains iron, vanadium, titanium and other rare metal elements.1, 2 The vanadium titanomagnetite resources are abundant in the Panxi region of China, where the reserves are approximately 9.66 billion tons.3 The titanium resource in this region accounts for approximately 95% …

Smelting Reduction Characteristics and Mechanism of …

of vanadium–titanium magnetite in the existing smelting process. 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 ...

Review and Thermodynamic Calculation of Gas-based …

uses the rotary kiln coal -based process. The advantages of the rotary kiln process are high efficiency, low production cost, and qualified products. However, the separation effect of iron, vanadium and titanium is extremely unsatisfactory, and it is difficult to achieve efficient and comprehensive utilization. In addition, various fire and

Effect of B2O3 on the carbothermal reduction of vanadium titanium

The effect of B2O3 on the carbothermal reduction of vanadium titanium magnetite was investigated under different temperatures by isothermal experiments. XRD analysis, SEM analysis and kinetic analysis were used to reveal the mechanism of B2O3 in the reduction process. The results showed that B2O3 could accelerate the reduction rate of vanadium …

A Novel Process for Direct Reduction of Titanium …

Due to the formation of large particles when titanium concentrate powder is stored for a long time and to avoid its impact on pelletizing, a 200 mesh square mesh sieve is used to screen the titanium concentrate powder and remove the larger particles. 2–3 kg of titanium concentrate powder was weighed, 1.2% bentonite was added, and water was …

Effect of catalyst on tail gas during reduction of vanadium-titanium …

Catalyst can enhance the reduction effect and promote the reduction of vanadium titanomagnetite. In this paper, the carbon-containing pellets of vanadium titanomagnetite were prepared by using highly volatile coal as the reducing agent under the background of a novel process of pre-reduction in the rotary kiln. The effects of CaO, CaCO3, B2 O3 and …

Behavior of vanadium during reduction and smelting …

The addition of MgO in the slag to increase the slag optical basicity can not only improve the vanadium reduction but also promote the formation of magnesium …

Influence of Parameters on the Pre-Reduction Process of Vanadium …

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 ...

Enrichment and reconfiguration of titanium-bearing phase …

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 …

Optimizing Pre-reduction of Vanadium–Titanium

A novel smelting reduction process called pre-reduction in rotary kiln and total oxygen melting pool is a promising route to reduce environmental pollution from the ironmaking industry.

Metals | Free Full-Text | Titanium Impurity Control in V …

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 …

Smelting Reduction Characteristics and Mechanism of Vanadium–Titanium …

Vanadium–titanium magnetite is one kind of important strategic resources. However, there exist some common problems in the current smelting process of vanadium–titanium magnetite. In the present paper, we propose the rotary kiln pre-reduction and bath smelting process reasonably for smelting vanadium–titanium …

Carbothermic Reduction Mechanism of Vanadium-titanium Magnetite

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). ... Optimal Process Parameters for Direct Carbothermal Reduction of Vanadium–Titanium Magnetite in a Rotary Kiln. 2023, Steel Research …

Smelting Reduction Characteristics and Mechanism …

The rotary kiln pre-reduction and bath smelting process for smelting vanadium–titanium magnetite is feasible, and it can recover the vanadium and …

Optimized magnetic separation for efficient recovery of V …

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 …

Optimal process parameters for direct carbothermal …

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 8-12mm, and particle size of pulverized coal of <8 mm.

High vanadium-titanium charging rotary kiln burner

technical field [0001] The invention relates to a burner, in particular to a burner for a high-vanadium-titanium furnace material rotary kiln. Background technique [0002] At present, gas burners for rotary kilns generally use double-channel and three-channel gas burners, and the fuel conditions cannot well meet the production needs of …

Optimal Process Parameters for Direct Carbothermal …

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 …

Investigation into the coal-based direct reduction behaviors …

Many scholars have conducted extensive researches focusing on the comprehensive recovery of iron, vanadium and titanium [[8], [9] ... On the other hand, rotary kiln requires the furnace charge have high strength and wear resistance to prevent accidents such as material sticking to the kiln and deposit when the kiln is rotating ...

High-Efficiency Smelting Separation of …

The experimental results show that maintaining a certain carbon content in the reduction products of vanadium–titanium magnetite is conducive to the reduction of …

Influence of Parameters on the Pre-Reduction Process of Vanadium …

A novel smelting reduction process called pre-reduction in rotary kiln and total oxygen melting pool is a promising route to reduce environmental pollution from the ironmaking industry. In this paper, the process parameters and appropriate efficiency

Smelting Reduction Characteristics and …

Vanadium–titanium magnetite is one kind of iron, vana-dium, titanium multiple-element symbiotic typical com-posite ore, which has extremely high comprehensive utilization …

Effect of Humic Acid Binder on Oxidation Roasting of …

grate-kiln processes. An innovative binder extracted from lignite and based on humic acid (HA) has been ... Vanadium–titanium magnetite (VTM) is an important source of V, Ti, and Fe, of which China has a reserve of more than 30 billion tons [14,15]. The major challenge of the

Influence of Parameters on the Pre-Reduction …

Wang B, Ding X, Ju T, Zhang X, Cheng G. Influence of Parameters on the Pre-Reduction Process of Vanadium-Titanium Magnetite Carbon-Containing Composite …

Effect of high-pressure grinding rolls pretreatment on the …

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 …

Kinetics and mechanism of coal-based direct reduction of

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 …