HIGH VANADIUM EXTRACTION CONFIRMED AS
Figure 4: Commercial Grate Kiln For the Grate Kiln vanadium process, the rotary kiln is still the heart of the procedure. This reduces the risk of building a completely new processing scheme. The Grate Kiln process utilises the rotary kiln as the final roasting process but is enhanced by incorporating pelletising, a travelling grate and
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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 …
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Towards sustainable processing of vanadium …
Efficient recovery of titanium from titaniferous magnetite ores continues to be a promising, yet unrealised opportunity, despite significant occurrences of titaniferous …
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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 …
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Carbothermic Reduction of Vanadium-Titanium …
XRD patterns for vanadium-titanium magnetite. ISIJ International, Vol. 58 (2018), No. 4. was shown in Figs. 5–6. In the shaded area, metal and slag can be well separated. Figure 5 shows that when the ratio of carbon is 2.0 to 2.8 and the content of NaOH is 30% to 45% at 1 473 K, metal and slag can be well separated.
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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 …
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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 …
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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%.
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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 …
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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 …
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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 …
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The XRD patterns images of the titanium slag samples.
Download scientific diagram | The XRD patterns images of the titanium slag samples. from publication: Optimization of Basicity of High Ti Slag for Efficient Smelting of Vanadium Titanomagnetite ...
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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 8–12 mm, and particle size of pulverized coal of <8 mm.
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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
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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 …
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steel research international: Vol 94, No 12
Herein, the carbothermal direct reduction process of vanadium–titanium magnetite in rotary kiln is deeply studied, and the effects of process parameters on metallization rate and reaction mechanism are investigated. High-quality direct reduced iron products are obtained, which improve the efficient smelting and comprehensive utilization …
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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 …
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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 …
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Effect of Humic Acid Binder on Oxidation Roasting of Vanadium–Titanium …
The oxidation roasting of vanadium–titanium magnetite (VTM) pellets with a new composite binder was investigated using a pilot-scale straight-grate. The evolution of the chemical and phase composition, the compressive strength, and the metallurgical properties of the fired VTM pellets were investigated. Under a preheating …
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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].
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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% …
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Behavior of vanadium during reduction and smelting of vanadium …
At last, the vanadium-bearing pig iron and titanium slag were separated and crushed for subsequent analysis. 2.2 Definition of parameters (1) Vanadium distribution ratio (LV) The vanadium distribution ratio between the titanium slag and the molten iron is expressed as sV m (V) (V) c L c  (1) where cs(V) and cm(V) represent the contents ...
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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
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Reduction behaviors of vanadium‑titanium magnetite with …
In this study, the pre-reduction impact of CO and H 2 on vanadium–titanium magnetite (VTM) was examined considering the composition of the top gas of the melting furnace. Additionally, the recycled and upgraded tail gas from the rotary kiln was mixed with the top gas of the melting furnace to enhance the pre-reduction effect and meet the …
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Isothermal reduction kinetics and microstructure evolution …
Vanadium titanomagnetite (VTM) pellets is an important charge for utilizing VTM through the rotary kiln-electric furnace process, and its reduction characteristic is essential to industrial production. ... (Fe), vanadium (V), and titanium (Ti) and also contains many other valuable elements [1], [2], [3], [4].
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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 …
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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 …
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High-Temperature Interactions Between Vanadium-Titanium …
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 …
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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 …
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Vanadium-Titanium Magnetite Carbon-Containing …
Keywords: rotary kiln; vanadium titanium magnetite; lignite; ironmaking 1. Introduction Ironmaking and steelmaking manufacturing is one of the most energy-intensive industries worldwide, using coal as the primary fuel making it the major contributor to the anthropogenic emissions of carbon dioxide in the world [1]. The annual world
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