محصول

Selective leaching of vanadium over iron from vanadium slag

A new comprehensive utilization of vanadium slag (VS) method focusing on inhibiting leaching of iron (Fe) during the leaching of vanadium (V) using sulfuric acid (SA) was proposed. In this process, Cr 2 O 3 was added to VS to conjugate with Fe in the VS to form (Fe x,Cr 1-x) 2 O 3 which is insoluble in SA, resulting in the decrease of leaching ...

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Processing of vanadium: a review

Iron was recovered in the form of high chromium–vanadium iron with 81.53% Fe, 1.31% Cr, and 2.04% V, and titanium was recovered as titanium dioxide pigment with 85–90% yield. Such a comprehensive and clean utilization of vanadium-bearing converter slag has great potential for practical application.

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Effects of Iron Sand Ratios on the Basic Characteristics of …

As the iron sand ratio in vanadium titanium mixed ores increases, the mixed ore's assimilation temperature increases, the fluidity index of liquid decreases, and the …

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Effects of Iron Sand Ratios on the Basic Characteristics of Vanadium

In order to make full use of low-price iron-bearing materials and improve the sintering characteristics of vanadium titanium magnetite, the iron sand ratio in vanadium titanium mixed ores should ...

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Recent Progress in Titanium Extraction and Recycling

Approximately, 80 kt of titanium mill products was consumed by the aircraft industry in 2015, [ 72] and the major alloy was Ti 6-4. This alloy exhibits high specific strength and has a large capacity for impurities such as iron and oxygen. Hence, Ti 6-4 is a suitable alloy for titanium recycling by remelting.

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IOP Conference Series: Earth and Environmental Science …

higher than that of conventional vanadium-containing molten iron. The V 2 O 5 grade of vanadium slag produced by reducing high vanadium-containing molten iron can reach an average of 46%. It is a high-quality raw material for vanadium extraction. The V 2 O 5 grade of vanadium slag produced by ordinary vanadium-containing molten iron is only 16 ...

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Efficient separation of vanadium, titanium, and iron from …

Due to the different reduction properties of iron, vanadium, and titanium minerals, the coal-based direct reduction-magnetic separation process can be applied to …

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A method for recovery of iron, titanium, and vanadium from …

vanadium by the water leaching process was also investi-gated. We speculate that the proposed separation method for iron, vanadium, and titanium from vanadium-bearing titanomagnetite could represent a new alternative method for the comprehensive utilization of vanadium-bearing ti-tanomagnetite. 2. Experimental 2.1. Materials and reagents

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reduce titanium and vanadium in iron sand

reduce titanium and vanadium in iron sand - whitehillstree of raw material (such as iron ore) to improve its physical or chemical properties, especially in preparation for smelting. Phases of metallurgical processing The application of extractive metallurgy through the steps of liberation, separation. and transformation can be covered by

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Optimized magnetic separation for efficient recovery of V and Ti

In contrast, VTM is a multi-metallic iron-based ore containing iron, titanium, and vanadium as the main constituents [24, 25]. 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 …

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Steel from Iron Sands in New Zealand

Steel in New Zealand is obtained from the iron sand which found on the west coast of the is ... but the earlier reduction at the lower temperatures required considerably less energy. He was able to do this because at lower ... high content of titanium and vanadium in the iron which was part of the original ore. From here

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By C. M. D.Se., and J. Willemse, M.Se., Ph.D.

TITANIUM AND VANADIUM IN THE MAGNETIO IRON ORES 23 TITANIUM AND VANADIUM IN THE MAGNETIC IRON ORES OF THE B USHVELD COMPLEX. By C. M. Sehwellnus~ D.Se., and J. Willemse, M.Se., ... On this farm a prominent outcrop of iron ore is situated well above the lower band. The outcrop is about 25 feet wide and was chip …

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Segregation of Iron and Titanium in an Iron Sand Concentrate …

An iron sand concentrate was pelletized and reduced using coal under the isothermal–temperature gradient profile with a controlled heating rate starting from 1000 °C to a final temperature of 1180–1380 °C. Each pellet was a non-composite mixture, where coal as a reductant was added to cover the whole surface of the pellet. The visual …

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Chemistry of Vanadium

Vanadium(V) oxide as a Catalyst. During the Contact Process for manufacturing sulfuric acid, sulfur dioxide has to be converted into sulfur trioxide, which is done by passing sulfur dioxide and oxygen over a solid vanadium(V) oxide catalyst. [ SO_2 + dfrac{1}{2}O_2 ce{->[V_2O_5]} SO_3 nonumber ] This is a good example of the …

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reduce titanium and vanadium in iron sand

Iron Sand Reduce Titanium And Vanadium 2021713 · King River Claims Highest Grade Vanadium Concentrate. the sample assayed 0.393 vanadium pentoxide, 3.561 titanium vanadium pentoxide, 16.23 titanium oxide and …

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Extraction of vanadium from V-containing titanoferrous magnetite

6.1.1. Vanadium grade of molten iron. The content of vanadium in iron is related to the properties of the iron ore used. Higher contents of vanadium in V-containing iron concentrate result in higher V contents in the molten iron, where a higher grade of V 2 O 5 in the vanadium slag can be obtained by blowing. V-containing molten iron can be …

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Segregation of Iron and Titanium in an Iron Sand Concentrate …

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Effect of Incremental Utilization of Unground Sea Sand Ore on the

In the iron and steel industry, improving the usage amount of New Zealand sea sand ore as a raw material for ironmaking can reduce the production costs of iron and steel enterprises to a certain extent. In this paper, New Zealand sea sand ore without any grinding pretreatment was used as a raw material, oxidized pellets were prepared by …

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Influence of Vanadium and Boron Additions on the

High chromium cast steel alloys are being used extensively in many industrial services where dry or wet abrasion resistance is required. Such steel castings are demanded for cement, stoneware pipes, and earth moving industries. In this research, five steel heats were prepared in 100 kg and one-ton medium frequency induction …

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Effects of Iron Sand Ratios on the Basic Characteristics of …

As the iron sand ratio in vanadium titanium mixed ores increases, the mixed ore's assimilation temperature increases, the fluidity index of liquid decreases, and …

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Vanadium Additions to a High-Cr White Iron and its Effects on the

The results show that, vanadium additions caused a decrease in the carbon content in the alloy and that some carbon is also consumed by forming primary vanadium carbides; thus, decreasing the eutectic M7C3 carbide volume fraction (CVF) from 30% for the base iron to 20% for the iron with 6.4%V;but overall CVF content (M 7 C 3 + VC) is …

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Efficient separation of vanadium, titanium, and iron from vanadium

A novel process featuring pressurized pyrolysis of ammonium chloride-acid leaching-solvent extraction was carried out to separate vanadium, titanium, and iron from vanadium-bearing titanomagnetite (VBT). Then vanadium and iron existed in the form of ammonium polyvanadate ((NH 4) 2 V 6 O 16) and ammonium jarosite (NH 4 Fe 3 (SO 4) …

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Extraction of vanadium from low-vanadium grade

This study reported the extraction of vanadium from low-vanadium grade magnetite concentrate pellets using sodium salt. 71.1% of vanadium can be extracted under the following optimal conditions: pelletizing with 5 wt% Na 2 CO 3, preheating at 1050 °C for 10 min, roasting at 1250 °C for 10 min, and water leaching at 120 °C for 120 min …

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Individual enrichment of titanium and iron from low-titanium beach

The direct reduction iron with 94.23% iron, 0.58% TiO 2, and a total iron recovery of 87.59% was obtained; however, the TiO 2 grade in the titanium concentrate was <25%. Based on the above-mentioned results, the reduction roasting and magnetic separation process can achieve effective separation of titanium and iron in beach …

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Technical Expediency Of "Tebinbulak" Titanomagnetite Ore Field

Vanadium-containing titanomagnetite ores are formed in the main and ultrabasic intrusive rock, which is characterized by an increased content of vanadium and titanium. Overseas, this industrial type of ores is associated with 6.5% of confirmed iron ore reserves, about 60% of TiO 2 reserves and more than 90% of V 2 O 5 reserves. The …

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(PDF) Mineralogy and carbothermal reduction behaviour of vanadium

Therefore, sea sand is regarded as a new vanadium and titanium resource, and some scholars have proposed using sea sand instead of high-quality iron ore for sintering production to reduce ...

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A method for recovery of iron, titanium, and vanadium from vanadium

The total recoveries of iron, vanadium, and titanium were 93.67%, 72.68%, and 99.72%, respectively. ... [17][18] adopted the sodium-reduction method to treat vanadium-titanium magnetite, aiming to ...

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A New Process of Extracting Titanium from Vanadium–Titanium Magnetite

Vanadium–titanium magnetite (VTM) owes its extremely high and comprehensive utilization value due to abundant associating and valuable elements such as iron, vanadium and titanium [].The reserve of the VTM resources attains over 10 billion tons in the Panzhihua and Xichang regions, in which the reserve of the TiO 2 reaches …

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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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Interface behavior and oxidation consolidation mechanism of titanium

In order to make full use of low-price iron-bearing materials and improve the sintering characteristics of vanadium titanium magnetite, the iron sand ratio in vanadium titanium mixed ores should ...

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