Processing of fuel oil ash from thermal power plant with extraction of vanadium and nickel

Гончаров, К. В.; Kashekov, D. Yu.; Садыхов, Г. Б.; Olyunina, T. V.

doi:10.17580/nfm.2020.01.01

Cited by 8 publications

(5 citation statements)

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“…Table 2 compares the data of works by different authors. Our data [ 40 ] are consistent and complement the data of other authors [ 12 , 13 , 14 , 18 , 22 , 23 , 24 , 27 ]; in particular, the presence of vanadium in different oxidation states was confirmed.…”

Section: Resultssupporting

confidence: 92%

“…Enriched ash from fuel oil combustion at Berezovskaya GRES (Belarus) contains 2.94 wt% V and sludge 1.21 wt% V [ 21 ]. The ash from the GRES in Konakovo (Russia) contains 7.82 wt% V 2 O 5 [ 22 ]. Moreover, 22.65 wt% V 2 O 5 is contained in the ash residue of the Baku power plant (Azerbaijan) [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

“…The hydrometallurgical methods of ash processing described in the literature are divided into acidic [ 29 , 30 , 31 ], alkaline [ 16 , 32 , 33 , 34 ], and aqueous [ 10 , 22 , 23 , 27 , 35 ]. Beforehand, the material can be roasted using additives.…”

Section: Introductionmentioning

confidence: 99%

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Study of Forms of Compounds of Vanadium and Other Elements in Samples of Pyrometallurgical Enrichment of Ash from Burning Oil Combustion at Thermal Power Plants

2022

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The results of the processing of ash from the combustion of fuel oil after roasting with the addition of Na2CO3 followed by aluminothermic melting are presented. As a result, metallic nickel and vanadium slag were obtained. Studies of slag, metal, and deposits on the electrode were carried out. The resulting metal contains about 90 wt% Ni. The main phases of scurf on the electrode are a solid solution based on periclase (Mg1–x–y–zNixFeyVzO), sodium-magnesium vanadate (NaMg4(VO4)3), and substituted forsterite (Mg2–x–yFexNiySiO4). The processing of ash made it possible to significantly increase the concentration of vanadium and convert it into more soluble compounds. Vanadium amount increased from 16.2 in ash to 41.4–48.1 V2O5 wt% in slag. The solubility of vanadium was studied during aqueous leaching and in solutions of H2SO4 and Na2CO3. The highest solubility of vanadium was seen in H2SO4 solutions. The degree of extraction of vanadium into the solution during sulfuric acid leaching of ash was 18.9%. In slag, this figure increased to 72.3–96.2%. In the ash sample, vanadium was found in the form of V5+, V4+ compounds, vanadium oxides VO2 (V4+), V2O5 (V5+), and V6O13, and nickel orthovanadate Ni3(VO4)2 (V5+) was found in it. In the slag sample, vanadium was in the form of compounds V5+, V4+, V3+, and V(0÷3)+; V5+ was presented in the form of compounds vanadate NaMg4(VO4)3, NaVO3, and CaxMgyNaz(VO4)6; V3+ was present in spinel (FeV2O4) and substituted karelianite (V2–x–y–zFexAlyCrzO3). In the obtained slag samples, soluble forms of vanadium are due to the presence of sodium metavanadate (NaVO3), a phase with the structure of granate CaxMgyNaz(VO4)6 and (possibly) substituted karelianite (V2–x–y–zFexAlyCrzO3). In addition, spinel phases of the MgAl2O4 type beta-alumina (NaAl11O17), nepheline (Na4–xKxAl4Si4O16), and lepidocrocite (FeOOH) were found in the slag samples.

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Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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Study of Forms of Compounds of Vanadium and Other Elements in Samples of Pyrometallurgical Enrichment of Ash from Burning Oil Combustion at Thermal Power Plants

2022

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“…However, vanadium is predominantly mined from titanomagnetite ores, where it isomorphically replaces iron due to the proximity of their ionic radii (64.5 pm for Fe 3+ (high-spin state) and 64 pm for V 3+ , coordination number 6) [54,55]. Oil ash [56], spent catalysts [57] and vanadium sludge [58] can also be useful sources for extracting vanadium. In nature, vanadium mostly occurs in the V 5+ or V 4+ oxidation states as various vanadates or vanadyl-containing compounds, respectively.…”

Section: Elementmentioning

confidence: 99%

Toward Efficient Recycling of Vanadium Phosphate-Based Sodium-Ion Batteries: A Review

2023

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Sodium-ion batteries (SIBs) have demonstrated noticeable development since the 2010s, being complementary to the lithium-ion technology in predominantly large-scale application niches. The projected SIB market growth will inevitably lead to the generation of tons of spent cells, posing a notorious issue for proper battery lifecycle management, which requires both the establishment of a regulatory framework and development of technologies for recovery of valuable elements from battery waste. While lithium-ion batteries are mainly based on layered oxides and lithium iron phosphate chemistries, the variety of sodium-ion batteries is much more diverse, extended by a number of other polyanionic families (crystal types), such as NASICON (Na3V2(PO4)3), Na3V2(PO4)2F3−yOy, (0 ≤ y ≤ 2), KTiOPO4-type AVPO4X (A—alkali metal cation, X = O, F) and β-NaVP2O7, with all of them relying on vanadium and phosphorous—critical elements in a myriad of industrial processes and technologies. Overall, the greater chemical complexity of these vanadium-containing phosphate materials highlights the need for designing specific recycling approaches based on distinctive features of vanadium and phosphorus solution chemistry, fine-tuned for the particular electrodes used. In this paper, an overview of recycling methods is presented with a focus on emerging chemistries for SIBs.

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“…The same group examined the selectivity of vanadium extraction and found that roasting with high amounts of Na 2 CO 3 allowed for the selective recovery of vanadium, and somewhat later, they proposed the production technology [106]. Recent developments include roasting oxidation for the selective recovery of vanadium that could be leached by water, and nickel that could only be recovered with acids [107]. More than 80% of the available vanadium was recovered as a result.…”

Section: Roasting With Salts and Controlled Oxidationmentioning

confidence: 99%

Vanadium and Nickel Recovery from the Products of Heavy Petroleum Feedstock Processing: A Review

Vishnyakov

2023

Metals

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The steadily growing demand for non-ferrous metals, a shift to heavier crude oil recovery and tightened environmental standards have increased the importance of heavy petroleum feedstock (HPF) as a raw source of metals. This paper reviews the recent developments in the recovery of vanadium and nickel from HPF. During crude oil processing and the application of its products, HPF is converted to various metal-enriched byproducts (“heavy oil”, petcoke, ashes and slags) from which the metals can be recovered. This paper briefly describes the sources and recovery pathways (both mainstream and exotic), and discusses the economic viability and possible future directions. Particular attention is paid to (i) the electrochemical recovery of metals from petrofluids and alternative approaches; (ii) pre-combustion metal recovery from petcoke; and (iii) metal reclamation from fly ash from heavy fuel oil or petroleum coke combustion: hydro- and pyro-metallurgical and bio-based techniques. The current stage of development and prospects for the future are evaluated for each method and summarized in the conclusion. Increasing research activity is mostly observed in traditional areas: metal extraction from fly ash and the reduction of metals from the ash to V–Fe and Ni–Fe alloys. Bioengineering approaches to recover vanadium from ashes are also actively developed and have the potential to become commercially viable in the future.

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Processing of fuel oil ash from thermal power plant with extraction of vanadium and nickel

Cited by 8 publications

References 0 publications

Study of Forms of Compounds of Vanadium and Other Elements in Samples of Pyrometallurgical Enrichment of Ash from Burning Oil Combustion at Thermal Power Plants

Study of Forms of Compounds of Vanadium and Other Elements in Samples of Pyrometallurgical Enrichment of Ash from Burning Oil Combustion at Thermal Power Plants

Toward Efficient Recycling of Vanadium Phosphate-Based Sodium-Ion Batteries: A Review

Vanadium and Nickel Recovery from the Products of Heavy Petroleum Feedstock Processing: A Review

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