iron sand vanadium separation

iron sand vanadium separation

Separation of vanadium from iron by solvent extraction ...

2014-1-1 · The best separation of vanadium and iron using selected extractants were achieved when vanadium and iron species were either both reduced (vanadium (IV) and iron (II)) or both oxidized (vanadium (V) and iron (III)). For vanadium (V), it was shown that acid extractants had poor selectivity for vanadium (V) over iron (III); however, Cyanex 923 as ...

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Separation and recovery of vanadium and iron from oxalic ...

2020-8-1 · The vanadium and iron distribution ratios were 308 and 0.0064, respectively, and the vanadium-to-iron separation factor was as high as 47956, which indicates that vanadium and iron were efficiently separated from the V-Fe-loaded organic phase by HCl stripping. Table 4. Results of the four-stage countercurrent stripping of vanadium.

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Separation and recovery of iron impurity from a vanadium ...

2017-6-8 · However, the concentrations of vanadium and iron were 1777.5 ppm and 6552.5 ppm, respectively, in the OLVS. By adopting reduction precipitation, 83.8% of the iron was precipitated as FeC 2 O 4 ·2H 2 O with only a 2.5% vanadium loss when an iron powder dosage was 2.5 times that of the stoichiometry for 90 min at 25 °C.

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Separation of vanadium from iron by solvent extraction ...

Nearly 100% vanadium (IV) and 95% aluminum were stripped, while only 10% iron was stripped under the optimal stripping conditions in a single contact,

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New understanding of extraction and separation of

2022-2-7 · The results showed that the effective selective separation of vanadium, iron and titanium could be obtained in which 97.39% V and 88.62% Fe were dissolved into the solution and over 91.76% Ti was remained in leaching residue after leaching at 0.5 M H 2 SO 4, 110°C for 1 h, then added 10% iron powder and continue to leaching for 2 h. Tafel ...

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Efficient separation of vanadium, titanium, and iron from ...

2021-1-15 · 1. Introduction. The vanadium–bearing titanomagnetite (VBT) is a strategic and complex iron ore, which containing valuable metals of vanadium, titanium, and iron used as constituents of several alloys, whitepigments, and steel , , .In China, the gross reserve of titanium in VBT ore is estimated to be about 1.18 million tons, accounting for 93% of China’s total

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Cleaner and effective extraction and separation of iron ...

2021-2-15 · In carbothermal reduction process, 85.4% of Fe in 1 g vanadium slag can be reduced to metallic iron by 0.0616 g graphite. Compared with the previous chlorination process (Liu et al., 2016), the pre-reduction of vanadium slag reduced the iron content in the vanadium alloy, and the content of vanadium in the vanadium alloy relative increase. Thus ...

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Eco-Friendly Leaching and Separation of Vanadium over

2017-12-6 · Eco-Friendly Leaching and Separation of Vanadium over Iron Impurity from Vanadium-Bearing Shale Using Oxalic Acid as a Leachant Pengcheng Hu † , Yimin Zhang * † ‡ , Jing Huang † , Tao Liu † , Yizhong Yuan † , and Nannan Xue †

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(PDF) Separation and Recovery of Vanadium from

2014-4-14 · Separation and Recovery of Vanadium from Synthetic Leach Liquor Solutions Containing Iron, Calcium, Sodium, Aluminum, and Manganese by the

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Separation and recovery of iron impurities from a complex ...

2020-2-1 · 1. Introduction. Vanadium-bearing shale is an important vanadium resource in China .With the increasing market demand for vanadium, the efficient and clean extraction of vanadium from vanadium-bearing shale has become an important task .To achieve this goal, oxalic acid, a clean and eco-friendly organic acid, has been used successfully to extract vanadium from

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Separation of vanadium from iron by solvent extraction ...

Nearly 100% vanadium (IV) and 95% aluminum were stripped, while only 10% iron was stripped under the optimal stripping conditions in a single contact,

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Efficient separation of vanadium, titanium and iron from ...

Bian et al. [22] investigated the separation efficiency of vanadium, titanium, and iron from vanadiumbearing titanomagnetite carried out by pressurized pyrolysis of

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Efficient separation of vanadium, titanium, and iron from ...

@article{Bian2021EfficientSO, title={Efficient separation of vanadium, titanium, and iron from vanadium-bearing titanomagnetite by pressurized pyrolysis of ammonium chloride-acid leaching-solvent extraction process}, author={Zhenzhong Bian and Ya-li Feng and Hao-ran Li and Hao Wu}, journal={Separation and Purification Technology}, year={2021 ...

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Separation and recovery of vanadium and iron from oxalic ...

2020-1-7 · Iron is the main element that affects the purification and enrichment of vanadium solutions. In traditional solvent extraction, only the vanadium is recovered and the iron is lost. Thus, the separation and recovery of vanadium and iron from an oxalic-acid ...

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The separation of vanadium and chromium from iron by ...

The separation of vanadium and chromium from iron by extraction of ferric chloride with di-isopropyl ether G. A. Dean and J. F. Herringshaw, Analyst, 1961, 86, 106 DOI: 10.1039/AN9618600106 . To request permission to reproduce ...

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Eco-Friendly Leaching and Separation of Vanadium over

2017-12-6 · Eco-Friendly Leaching and Separation of Vanadium over Iron Impurity from Vanadium-Bearing Shale Using Oxalic Acid as a Leachant Pengcheng Hu † , Yimin Zhang * † ‡ , Jing Huang † , Tao Liu † , Yizhong Yuan † , and Nannan Xue †

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(PDF) Separation and Recovery of Vanadium from

2014-4-14 · Separation and Recovery of Vanadium from Synthetic Leach Liquor Solutions Containing Iron, Calcium, Sodium, Aluminum, and Manganese by the Solvent Extraction Technique April 2014 Separation ...

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Reduction roasting–magnetic separation of vanadium ...

2015-10-27 · Reduction roasting with sodium sulfate followed by magnetic separation was investigated to utilize vanadium tailings with total iron grade of 54.90 wt% and TiO2 content of 17.40 wt%. The results show that after reduction roasting–magnetic separation with sodium sulfate dosage of 2 wt% at roasting temperature of 1150 °C for roasting time of 120 min,

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Cleaner and effective extraction and separation of iron

2020-10-15 · After carbothermal reduction of vanadium slag, the unreduced iron oxide is chlorinated to obtain FeCl 2 and the chlorination rate of unreduced iron oxide is 85.6% at 900 o C for 4 h. In the electrolysis process, the selective electrolysis of iron ions is achieved by controlling the potential of electrolysis to obtain metal Fe (95wt%) with 0.9wt% of V and 0.25wt% of Cr at

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New understanding of extraction and separation of

2022-2-8 · The results showed that the effective selective separation of vanadium, iron and titanium could be obtained in which 97.39% V and 88.62% Fe were dissolved into the solution and over 91.76% Ti was remained in leaching residue after leaching at 0.

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Eco-Friendly Leaching and Separation of Vanadium over

2019-5-25 · Oxalic acid, an eco-friendly leachant, was used to selectively separate V over Fe impurity from V-bearing shale in the direct acid leaching (DAL) and blank roasting-acid leaching (BRAL) processes, respectively. For the DAL process, 71.6% of V with only 3.2% of Fe impurity being leached at 95 °C for 6 h with a 1.0 L/kg water–mineral ratio, a 6.0 mol/kg oxalic acid

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Eco-Friendly Leaching and Separation of Vanadium over

2017-12-6 · Eco-Friendly Leaching and Separation of Vanadium over Iron Impurity from Vanadium-Bearing Shale Using Oxalic Acid as a Leachant Pengcheng Hu † , Yimin Zhang * † ‡ , Jing Huang † , Tao Liu † , Yizhong Yuan † , and Nannan Xue †

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Efficient separation of vanadium, titanium, and iron from ...

DOI: 10.1016/j.seppur.2020.117169 Corpus ID: 219743539; Efficient separation of vanadium, titanium, and iron from vanadium-bearing titanomagnetite by pressurized pyrolysis of ammonium chloride-acid leaching-solvent extraction process

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The separation of vanadium and chromium from iron by ...

The separation of vanadium and chromium from iron by extraction of ferric chloride with di-isopropyl ether G. A. Dean and J. F. Herringshaw, Analyst, 1961, 86, 106 DOI: 10.1039/AN9618600106 . To request permission to reproduce ...

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Separation and recovery of iron impurities from a complex ...

2020-2-1 · Abstract Vanadium and iron have been effectively separated from the acid leachate of vanadium-bearing shale by solvent extraction or ion exchange; however, in these methods, the iron was not recovered, and the comprehensive utilization rates of the resources were low. In this paper, the recovery of iron impurities from a complex oxalic acid solution containing vanadium

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Separation of titanium from vanadium and iron in leach ...

2019-9-1 · Abstract The separation of titanium (Ti) (IV) in acidic leach solutions of vanadium slag by solvent extraction with trioctyl tertiary amine (N235) is proposed. Because the leach solutions contain a lot of vanadium (V) and iron (Fe) impurities, the effects of ...

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(PDF) Coprecipitation of vanadium with iron(III) in ...

2014-7-28 · Furthermore, co-precipitation of vanadium with iron has also been demonstrated (Roccaro and Vagliasindi, 2015). Good sorption capacities have also been obtained using pine sawdust (103 mg/g ...

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Efficient separation of vanadium, titanium and iron from ...

2020-5-27 · Efficient separation of vanadium, titanium and iron from vanadium-bearing titanomagnetite by pressurized pyrolysis of ammonium chloride-acid leaching-solvent extraction Separation and Purification Technology ( IF 7.312Pub Date : 2020

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Steel from Iron Sands in New Zealand

2015-5-19 · Steel from Iron Sands in New Zealand . ... separation techniques along with pre-treatment in hearth furnaces) is fed into the rotary kiln. These ... high content of titanium and vanadium in the iron which was part of the original ore. From here argon is blown into the steel to mix it evenly. Argon is an unreactive gas as it is in group 18 of the

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(PDF) Separation and recovery of iron and titanium from ...

Separation and recovery of iron and titanium from oxidized vanadium titano-magnetite by gas-based reduction roasting and magnetic separation May 2019 Journal of

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