آخرین محصولات
Gas-based reduction of vanadium titano-magnetite concentrate: behavior
Moreover, the phenomenon of Mg enrichment in unreacted cores disappeared during H2 reduction. Both the lower resistance to gas diffusion and the lack of Mg enrichment facilitated the reduction of vanadium titano-magnetite. ... Extraction of titanium, vanadium and iron from titanomagnetite deposits at pipestone lake, Manitoba, …
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Separation and recovery of iron and titanium from oxidized vanadium
1. Introduction. Titanium plays a considerably important role in the modern industry, which is widely used in aerospace, military, metallurgy, solar cell, pigment and other advanced materials fields [1], [2], [3].As one of the largest of titanium resources in the world, vanadium titano-magnetite represents a valuable raw material for the production …
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Experimental Study on Oxygen-Enriched Sintering of Vanadium-Titanium
The influences of various factors, such as oxygen enrichment time, oxygen enrichment load, and ignition temperature, on the technical indices and sintering performance in the vanadium-titanium magnetite sintering process are simulated using sinter pot experiments. The experiments are based on the field production parameters of …
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Effect of oxygen enrichment on sintering behavior of high …
In addition, oxygen enrichment sintering could significantly increase the desulphurization level of vanadium–titanium magnetite sinter and the rate of desulphurization reaction during sintering ...
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Dendritic mesoporous silica&titania nanospheres (DMSTNs) …
XRD patterns of DMSNs, DMSTNs, and DMSTNs/ACN are exhibited in Fig. 2 a. For pure DMSNs, a broad peak centered at ca. 22° corresponds to amorphous silica [40].In the case of hybrid DMSTNs, the peak dramatically reduces and characteristic anatase TiO 2 peaks emerge as (2 0 4), (2 1 1), (2 0 0), (0 0 4), and (1 0 1). There is no …
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Fusion Separation of Vanadium-Titanium Magnetite and Enrichment …
Vanadium-titanium magnetite is a complex symbiotic iron ore resource composed of iron, vanadium, titanium and other metals, which is one of the most important iron ore resources in China [1,2,3,4].Titanium, as an indispensable metal raw material for the modern industry and advanced science and technology, is mostly derived from the …
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Extraction of vanadium and enrichment of titanium from modified …
Generally, vanadium‑titanium magnetite concentrate including Fe of 30%, TiO 2 of 10%, and V 2 O 5 of 0.3% is smelted by using blast furnaces. Metal iron is separated from titanium by gravity sedimentation, and titanium components are enriched in blast furnace slag (22–25% TiO 2 ).
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ExperimentalStudyonOxygen-EnrichedSinteringof Vanadium …
In this study, the e‹ects of di‹erent oxygen enrichment times, oxygen enrichment loads, ignition temperatures, and other factors on the industrial production of the vanadium-titanium sintered ore are simulated using sinter pot ex-periments. Changes in performances, such as sintered ore drumstrength,antiwearindex,reductivity,low-temperature
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The influence of basicity and TiO2 on the crystallization behavior …
China has abundant vanadium–titanium magnetite resources. It is important to extract the Fe, Ti and V elements from vanadium–titanium magnetite by recycling. ... The thermodynamic calculation results showed that perovskite and pseudobrookite are the main enrichment phases of the high-titanium slag during the slag cooling phase.
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Extraction of vanadium from V-containing titanoferrous magnetite
The enrichment of vanadium slag is carried out in molten iron, which is a typical oxidation and separation process that aims to balance the vanadium slag and semisteel. As the oxidation process continues, a slag–iron interface is formed, and alternating reduction and oxidation reactions occur. ... Table 6.1 shows the vanadium …
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Extraction of vanadium and enrichment of titanium from modified …
Generally, vanadium‑titanium magnetite concentrate including Fe of 30%, TiO 2 of 10%, and V 2 O 5 of 0.3% is smelted by using blast furnaces. Metal iron is separated from titanium by gravity sedimentation, and titanium components are enriched in blast furnace slag (22–25% TiO 2). In china, over 3 million tons of the slag is produced …
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Optimized magnetic separation for efficient recovery of V and Ti
Since VTM has a high iron and titanium content, many recovery studies have been conducted from the viewpoint of developing processes for titanium enrichment [26, 27]. Studies on the beneficiation process for recovering vanadium …
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Extraction of vanadium from titanoferrous magnetite: mineral processing
V-bearing titanoferrous magnetite is a valuable ore, even though it has a low vanadium concentration, and is the main raw material for vanadium extraction. ... White titanium ore. ... The proposed enrichment process to produce V-containing iron concentrate includes closed-circuit grinding to 0.4 ...
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(PDF) Fusion Separation of Vanadium-Titanium Magnetite and Enrichment
In view of the problem that the enrichment and migration law of the Ti element in the slag of vanadium-titanium magnetite during the melting process is not clear, the phase transformation is not ...
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Multiple heavy metal distribution and microbial community
Vanadium-titanium (V-Ti) magnetite tailings have caused great concern due to their safety hazards and environmental risks. However, the microbial community structure and the key geochemical factors of V-Ti magnetite tailing profiles under different management modes remain unclear. ... Additionally, a significant enrichment of …
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Fusion Separation of Vanadium-Titanium Magnetite and …
Zhang Jun et al. [12,13,14,15,16,17,18] adopted the sodium-reduction method to treat vanadium-titanium magnetite, aiming to reduce the melting temperature, realize the enrichment of vanadium, and achieve the effect of vanadium-titanium separation.
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Use of Hydrogen–Rich Gas in Blast Furnace Ironmaking of …
Thermodynamics Analysis of Reduction of Vanadium and Titanium Oxides. ... The ranges of RAFT and TGT can be adjusted by increasing the blast oxygen enrichment rate. RAFT is an important parameter for the blast furnace operator to judge the thermal state of the hearth. It determines the initial gas temperature of the hearth, thus …
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Extraction of vanadium and enrichment of titanium from modified …
The potential-pH diagrams of the main components of Ti-bearing blast furnace slag (air-cooled slag) at 298.15 K (25 °C) and an ion activity of 1.00 were drawn by thermodynamic calculation.
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Titanium-Enriched Slag Prepared by Atmospheric Hydrochloric …
The observed leaching rates of iron, vanadium, and titanium were 92.5%, 95.1% and 1.2%, respectively. Zhong B et al. ... Acid oxide in the enrichment of titanium slag is higher than the titanium slag, and the alkaline oxide is even lower; thus, the enrichment of titanium slag can be used in the production of high titanium slag, and titanium ...
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High-Efficiency Extraction of Fe, V, and Ti from Vanadium Titano
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 ore enrichment [].Therefore, the question of how to improve comprehensive utilization of vanadium-titanium magnetite concentrate (VTMC) is of decisive importance for the …
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Investigation of Vanadium Titanomagnetite Concentrate Activated
Vanadium titanomagnetite is an important source of vanadium and titanium throughout the whole world. During enrichment about 82 wt.% of vanadium, 54 wt.% titanium, and 75 wt.% of iron are transferred into iron concentrate [1, 2].Currently vanadium titanomagnetite concentrate (VTMC) is used as a charge in blast furnace (BF) …
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Efficient Extraction of Vanadium from Vanadium–Titanium …
years, a large amount of vanadium–titanium magnetite deposit was discovered in Chao-yang, China. Compared with the vanadium–titanium magnetite concentrate from Pan-xi and Cheng-de, China, ... enrichment, precipitation and calcination were applied to obtain the product of V2O5 [1,13]. Furthermore, prioritized extraction of vanadium, combined ...
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Effect of oxidization on enrichment behavior of TiO2 in titanium
Controlling the generation of perovskite (CaO·TiO 2, CT) during sintering with vanadium–titanium magnetite (VTM) is the key to improve the strength and yield of VTM sinters. This study determined whether adding pre–formed calcium ferrite (CaO·Fe 2 O 3, CF) effectively prevents the formation of CT during sintering with VTM.
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Fusion Separation of Vanadium-Titanium Magnetite and …
vanadium titanium magnetite; titanium enrichment; alkalinity; melting temperature; carbon content. 1. Introduction. Vanadium-titanium magnetite is a complex symbiotic iron ore resource composed of iron, vanadium, titanium and other metals, which is one of the most important iron ore resources in China [ 1, 2, 3, 4 ].
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Phase Evolution Behavior and Oxidation Induration Mechanism …
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 …
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Carbothermic Reduction of Vanadium-Titanium Magnetite in …
nium and inhibit the vanadium enrichment in metal phase. KEY WORDS:vanadium-titanium magnetite; carbothermic reduction; alkaline molten; pig iron containing vanadium. In recent years, non-blast furnace process is considered to be one of the great potential of the method. It cannot only be a great utilization of iron, vanadium, titanium, but
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Vanadium
Vanadium is used primarily in the production of steel alloys; as a catalyst for the chemical industry; in the making of ceramics, glasses, and pigments; and in vanadium redox-flow batteries (VRBs) for large-scale storage of electricity. World vanadium resources in 2012 were estimated to be 63 million metric tons, which include about 14 million metric tons of …
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Fusion Separation of Vanadium-Titanium Magnetite and Enrichment …
In view of the problem that the enrichment and migration law of the Ti element in the slag of vanadium-titanium magnetite during the melting process is not clear, the phase transformation is not clear and the enrichment effect is not obvious, the single factor experiment and orthogonal experiment are used to optimize the melting conditions …
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Extraction of vanadium from V-bearing titanoferrous magnetite by
The main reason for this is that the SiO 2 content of vanadium and titanium magnetite concentrate is low (<6.18%), and few silicate minerals are produced during sintering, which consumes less heat. The FeO content in the iron concentrate of V-bearing titanoferrous magnetite is high (30.25%), and it is oxidized via an exothermic reaction …
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(PDF) Reduction and Smelting of Vanadium Titanomagnetite
The product, vanadium-bearing iron, can be applied in the converter steelmaking process, and titanium slag containing 50.34% TiO2 can be used by the acid leaching method. View Show abstract
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