Leaching of vanadium from carbonaceous shale

Zhou, Xiangyang; Li, Changlin; Li, Jie; Hong-zhuan, Liu; Wu, Shangyuan

doi:10.1016/j.hydromet.2009.07.008

Cited by 65 publications

(24 citation statements)

References 5 publications

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“…So far, a few researchers have researched the fluoride-assisted vanadium leaching. Zhou et al (2009) used sulfuric acid with NH 4 F to investigate the direct acid-leaching parameters and attempted to discover the mechanism of fluoride-assisted leaching. They found that only the limonite was dissolved in the absence of A C C E P T E D M A N U S C R I P T…”

Section: Introductionmentioning

confidence: 99%

A mechanism of calcium fluoride-enhanced vanadium leaching from stone coal

Wang

Zhang

Liu

et al. 2015

International Journal of Mineral Processing

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Section: Introductionmentioning

confidence: 99%

A mechanism of calcium fluoride-enhanced vanadium leaching from stone coal

Wang

Zhang

Liu

et al. 2015

International Journal of Mineral Processing

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“…In nature, vanadium usually occurs in combination with various minerals which include carnotite, roscoelite, vanadinite, mottramite, and patronite as important sources of the metal [1]. In China, vanadium and titanium magnetite ore, stone coal ore, and bauxite ore are three important vanadium sources [6][7]. Thereinto, the gross reserve of vanadium in stone coal is about 118 million tons in terms of V 2 O 5 , accounting for more than 87% of the domestic reserve of vanadium [8].…”

Section: Introductionmentioning

confidence: 99%

Concentration and separation of vanadium from alkaline media by strong alkaline anion-exchange resin 717

Huang

et al. 2010

Rare Metals

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With strong alkaline anion-exchange resin 717 as the sorbent and NaOH solution as the eluent, a study on the sorption from alkaline solution and elution of vanadium(V), silicon(IV), and aluminium(III) was carried out. Different parameters affecting the sorption and elution process, including temperature, pH values as well as the ratio of resin to solution, were investigated. The results show that sorption degree of vanadium(V) increases with a decrease of pH values, and V(V) ions are easier sorbed than Si(IV) and Al(III) ions under the same conditions. The sorption degree of V(V), Si(IV), and Al(III) at pH 9.14 for 15 min are 90.6%, 33.5%, and 21.6%, respectively. Si(IV), Al(III), and V(V) ions sorbed on 717 resin were eluted by use of 2 mol⋅L −1 NaOH solution; the desorption degree of V(V), Si(IV), and Al(III) for 5 min are 81.7%, 99.1%, and 99.3%, respectively.

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“…As for the traditional vanadium extraction process from stone coal, the salt roasting-water leaching technology was already eliminated due to the low vanadium recovery and the serious environmental pollution [3]. Recently, the acid leaching process for vanadium extraction from stone coal after oxidizing roasting, which was efficient and environmental-friendly, has attracted increasing attention, and the pressure acid leaching (PAL) process, with advantages of higher recovery and shorter production cycle, has become the research hotspot in this area [4,5]. However, the impurities content in leachate is usually very high [6].…”

Section: Introductionmentioning

confidence: 99%

Selective Leaching of Vanadium from Roasted Stone Coal by Dilute Sulfuric Acid Dephosphorization-Two-Stage Pressure Acid Leaching

et al. 2016

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A novel staged leaching process has been reported in this paper to selectively extract vanadium from roasted stone coal and the mechanisms have been clarified. Results showed that the leaching efficiency of V, Al, P and Fe was 80.46%, 12.24%, 0.67% and 3.12%, respectively, under the optimum dilute sulfuric acid dephosphorization (DSAD)-two-stage pressure acid leaching (PAL) conditions. The efficient separation of V from Fe, Al and P was realized. As apatite could be leached more easily than mica, the apatite could completely react with sulfuric acid, while the mica had almost no change in the DSAD process, which was the key aspect in realizing the effective separation of V from P. Similarly, the hydrolyzation of Fe and Al could be initiated more easily than that of V by decreasing the residual acid of leachate. The alunite and iron-sulphate compound generated in the first-stage PAL process resulted in the effective separation of V from Fe and Al.

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Leaching of vanadium from carbonaceous shale

Cited by 65 publications

References 5 publications

A mechanism of calcium fluoride-enhanced vanadium leaching from stone coal

A mechanism of calcium fluoride-enhanced vanadium leaching from stone coal

Concentration and separation of vanadium from alkaline media by strong alkaline anion-exchange resin 717

Selective Leaching of Vanadium from Roasted Stone Coal by Dilute Sulfuric Acid Dephosphorization-Two-Stage Pressure Acid Leaching

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