Progress With Petcoke Cinder
Current efforts are focussed on hydrometallurgical purification and concentration of leached vanadium and nickel values by laboratory scale ion exchange to produce high-purity pregnant solutions suitable for premium grade products including VRB electrolyte. ... Pregnant leach solution is separated from fly ash tailings using a Buchner vacuum ...
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Recovery of gallium and vanadium from gasification fly ash
Along with the studies on Ga, potential extraction of vanadium from this fly ash was also investigated. Vanadium is commonly recovered from titaniferous magnetite ores and as V 2 O 5 from by-products of crude oil, being mainly used to produce high-strength and low-alloy steels [22].Since 50:50% coal/petcoke blend is gasified in Puertollano IGCC plant, fly ash is …
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Vanadium Extraction from Fly Ash—Preliminary Study of
Many studies have focused on the recovery of vanadium from oil fly ash using ... As a second step in our work of metal recovery from heavy oil fly ash, mutual separation of V/Fe was studied using ...
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VANADIUM RECOVERY AS FeV FROM PETROLEUM FLY ASH …
Petroleum fly ash is a solid residue generated in the power plants using crude oil and petroleum coke as fuel, which is a valuable resource for vanadium. Stricter environmental regulations and sustainable material utilization demand high vanadium
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Process Development for Recovery of Vanadium and Nickel …
After neutralization and oxidation of the first liquor, Fe and Al are precipitated and removed from solution. Both Ni and Zn are then loaded on CR20 resin. Nickel can be …
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Extraction and separation of vanadium and nickel from fly ash …
Extraction and separation of vanadium and nickel from fly ash produced in heavy fuel power plants Chemical Engineering Journal 10.1016/j.cej.2011.07.080
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Recovery of vanadium, nickel and magnesium from a fly ash …
Vapor phase extraction of vanadium, nickel and magnesium from a fly ash of Orimulsion®, a new fuel, has been investigated using high-temperature chlorination with N 2–Cl 2 or air–Cl 2 gas mixture. ... Mutual separation of nickel and magnesium components was achieved by (i) a selective chlorination followed by vaporization of NiCl 2 in the ...
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Extraction and separation of vanadium and nickel from fly ash …
Extraction and separation of vanadium and nickel from fly ash produced in heavy fuel power plants ... Fly ash Heavy fuel Vanadium Nickel Separation a b s t r a c t In Jordan, large amounts of fly ash (FA) are produced as a result of burning heavy fuel in power plants. Extraction of metals from FA is an important industrial/environmental issue ...
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Efficient recovery of aluminum, lithium, iron and gallium from coal fly
Afterwards, the effective separation of lithium, iron, gallium in TBP is achieved by stepwise stripping. ... Coal fly ash (CFA) is a kind of waste generated from coal burning process with huge quantities (Ding et al., ... Recovery of gallium and vanadium from gasification fly ash. J. Hazard. Mater., 139 (3) (2007), pp. 413-423.
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Recovery of vanadium from a previously burned heavy oil fly ash
The properties of the fly ash used in this work, collected from the electrostatic precipitator of a power plant burning heavy oil, are reported in Table 1.The high carbonaceous fraction content (around 70%) of the sample makes a preliminary thermal treatment suitable for concentrating the inorganic fraction to be submitted afterwards to the vanadium recovery …
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Extraction of vanadium from oil sands fly ash
Extraction of vanadium from oil sands fly ash Griffin, P.J.; Etsell, T.H. Pages 81-87 1982 1982. Accession: 018905982. Article emailed within 1 workday. ... H. 1986: Séparation du molybdène et du vanadium au moyen de l'extraction par solvant - Separation of molybdenum from vanadium by solvent extraction Nippon Kinzoku Gakkaishi (1952) 50(7 ...
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Extraction and separation of vanadium and nickel from fly …
A Review on Utilization of Fly- Ash and Pond-Ash as a Partial Replacement of Cement in Concrete Mix Design
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Vanadium Extraction from Fly Ash—Preliminary Study of …
The composition and properties of fly ash depend on the type and origin of the fuel used, as well as the combustion conditions.[1] ... Separation Science and Technology List of Issues Volume 38, Issue 12-13 ... Vanadium Extraction from Fly Ash—Preliminary Study of Leaching, Solvent Extraction, and Sorption on Chitosan ...
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Hydrometallurgical Recovery of Germanium from Coal Gasification Fly Ash
This article is concerned with a simple hydrometallurgical method for the selective recovery of germanium from fly ash (FA) generated in an integrated gasification with combined cycle (IGCC) process. The method is based on the leaching of FA with water and a subsequent concentration and selective separation of germanium by a solvent method. Regarding the …
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Recovery of vanadium and nickel from heavy oil fly ash …
Several processes are reported in the literature for extracting vanadium from the fly ashes, such as roasting vanadium bearing materials in the presence of sodium salt, combined with alkaline …
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Recovery of gallium from coal fly ash
A study has been made on the extraction of gallium from coal fly ash. A process which includes acid leaching, impurity removal, extraction of gallium and its purification has been suggested. ... [10–13], adsorbents for removal of various pollutants [14], depth separation [15–17], zeolite synthesis [18–20] and valuable metals recovery ...
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Valorization of fly ash by nickel ferrite and vanadium oxide …
Extraction and separation of vanadium and nickel from fly ash produced in heavy fuel power plants
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fly ash processing vanadium
and processing. The reserve base of vanadium is more than 27 million metric tons, ... vanadium from spent catalyst, fly ash, and petroleum residues
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Efficient Separation and Recovery of Vanadium …
Hydrochloric acid leaching has been widely used in the recovery process of vanadium due to its efficient selectivity. It was necessary to further separate vanadium from hydrochloric acid leaching solution. Four extractants …
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Recovery of vanadium from heavy oil and Orimulsion fly ashes …
The composition of the fly ashes is reported in Table 1. Of the three oil-fired fly ash samples, sample C is characterised by a high carbonaceous fraction and by a lower vanadium content. The Orimulsion fly ash shows a much higher vanadium content than the oil fly ashes. Due to the Table 1 Main constituents of the fly ashes Žwt.%. Oil fly ashes 2.
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Recovery of vanadium and nickel from heavy oil fly ash …
Akita et al. 50 studied the recovery of nickel and vanadium from oil fly ash in a two-step leaching process. Ni is leached with NH 4 Cl solution in the first step, followed by Na 2 CO 3 leaching of the residual ash to dissolve vanadium in the second step.
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Solvent Extraction and Separation of Nickel and …
In this investigation a model was developed to predict the synergistic effect of Cyanex 272 and D2EHPA on co-extraction and separation of nickel and vanadium from sulfate leach liquors of power plant fly ash with the aim of …
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(PDF) Vanadium Extraction from Fly Ash—Preliminary Study …
This article was downloaded by: [University of Connecticut] On: 20 October 2013, At: 08:52 Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered…
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Solvent extraction and separation of nickel and …
1 Solvent extraction and separation of nickel and vanadium from sulfate leach liquor of power plant fly ash using D2EHPA and Cyanex 272 Ehsan Vahidi1, Mehdi Noori2, Fereshteh Rashchi2, Ataollah ...
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Vanadium and Nickel Recovery from the Products …
Bioengineering approaches to vanadium and nickel separation from ashes appear to be far from production but potentially promising . Li and ... Chianeh, F.R.; Gu, T. Ultrasound-assisted leaching of vanadium from fly ash …
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Recovery of vanadium, nickel and molybdenum from fly ash …
After some preliminary tests, two leaching stages of fly ash to recover vanadium, molybdenum and nickel were selected. A first stage was an alkaline leaching of fly ash to recover vanadium and molybdenum followed by a second stage using sulfuric acid leaching of the residual ash to recover nickel. The impact of some operational parameters (liquid/solid, …
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Recovery of germanium from real fly ash leachates by ion …
Germanium recovery from real fly ash (FA) leachates was studied using ion-exchange procedures. ... However, Boateng et al. (1989) assure that both weakly and strongly basic resins are suitable for Ge separation from Sb and Zn. Both Harada et al. (1988) ... manganese as Mn 2+, cobalt in cationic form (Co 2+), vanadium in hydroxide (V (OH) 3 o ...
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Recovery of vanadium and nickel from heavy oil fly ash …
Petroleum fly ash is a solid residue generated in the power plants using crude oil and petroleum coke as fuel, which is a valuable resource for vanadium. ... Y. S. Al-Degs, A. Gharir, H. Koury and M. Ziedan, Extraction and separation of vanadium and nickel from y ash produced in heavy fuel power plants, Chem. Eng. J., 2011, 173, 191–197, DOI ...
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The Effective Separation of Gallium, Vanadium, and …
The effective recovery of gallium from wastewater discharge in the Bayer process is promising for the long-term development of gallium resources. The adsorption and desorption behavior of gallium (Ga), vanadium (V), and aluminum (Al) ions on a strong acidic styrene cation exchange resin (JK resin) from a simulated Bayer solution was systematically investigated by …
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Recovery of vanadium and nickel from heavy oil fly ash …
Recovery of vanadium and nickel from heavy oil fly ash (HOFA): a critical review. Ashraf Bakkar * a, Mohamed M. El-Sayed Seleman b, Mohamed M. Zaky Ahmed c, Saeed Harb a, Sami Goren a and Eskander Howsawi a a Department of Environmental Engineering, College of Engineering at Al-Leith, Um Al-Qura University, Al-Lith 28434, Saudi Arabia. E-mail: …
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