fly ash processing vanadium

Vanadium Recovery from Oil Fly Ash by Carbon Removal

2017-11-13  This research mainly focuses on the recovery of vanadium from oil fly ash by carbon removal and the roast-leach process. The oil fly ash contained about 85% unburned carbon and 2.2% vanadium by weight. A vanadium-enriched product was obtained after carbon removal, and the vanadium content of this product was 19% by weight. Next, the vanadium-enriched product was roasted with

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Vanadium recovery from oil fly ash by leaching ...

In order to reduce the environmental impact due to land disposal of oil fly ash from power plants and to valorize this waste material, the removal of vanadium was investigated using leaching processes (acidic and alkaline treatments), followed by a second step of metal recovery from leachates involving either solvent extraction or selective precipitation.

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PROCESS FOR TREATMENT OF VANADIUM CONTAINING

I claim 1. A process for the treatment of fly ash derived from petroleum of bituminous products to recover vanadium oxide present in the ash by the formation of a soluble vanadate, comprising reacting the ash with a solution of caustic soda containing 1 to 5 moles of Na 2 O per liter for the period within the range of 4-8 hours and a temperature within the range of between 50°C and the ...

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Ultrasound-assisted leaching of vanadium from fly ash ...

2020-1-10  In this work, vanadium (V) was selectively extracted from fuel-oil fly ash using a leaching process utilizing organic acids extracted from lemon juice with assistance from ultrasound and H2O2. Response Surface Methodology (RSM) was used to optimize the main operating factors. The V recovery was 88.7% at the optimal

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VANADIUM RECOVERY AS FeV FROM PETROLEUM FLY

2010-11-12  treatment system as fly ash. The fly ash from burning petroleum oil is an important secondary resource for vanadium, after the primary resource of the ore concentrates and the metallurgical slag. According to the information in literature [6], hydrometallurgical processing is

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RECOVERY OF VANADIUM AND NICKEL FROM

2012-2-7  Processing of vanadium-containing flyash was investigated by Pickles and Alcock (1983). An extended arc flash reactor was employed to treat a flyash containing about 8% NiO and 42% V2O5. Anthracite and petroleum coke were used as reducing agents. A FeNi alloy was first ... ash was placed in each of the three crucibles along with a given amount ...

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Extracting vanadium pentoxide from minerals and

2021-1-1  Typical process of extracting vanadium from fly ash. There is trace vanadium in most global oil supplies, where vanadium is enriched during the oil refining process and concentrated in heavy oil. The heavy oil is mainly used for power generation and industrial heating, where the fly ash is collected during combustion processes with a boiler and ...

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Recovery of gallium and vanadium from gasification fly

2007-1-31  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

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Chapter 6.12 Vanadium - World Health Organization

2013-10-10  values (up to 400 μg/g) in areas polluted by fly ash (4). The concentration of vanadium in water is largely dependent on geographical location and ranges from 0.2 to more than 100 μg/litre in freshwater (2), and from 0.2 to 29 μg/litre in seawater (3). The ocean floor is the main long-term sink of vanadium in the global circulation (4).

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VANADIUM EXHIBIT 1 - US EPA

2016-3-27  Increasingly, it is also being recovered by secondary processing of petroleum refinery residues, fly ash, and spent catalysts.6 Exhibit 2 presents an overview of the processes used to recover vanadium from various raw materials. As Exhibit 2 illustrates, the vanadium product from the primary process is sent either to an acid leach or a

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Vanadium recovery from oil fly ash by leaching ...

2007-1-1  The proposed treatment for the recovery of vanadium from oil fly ash is complex, requiring a series of processing steps that make vanadium valorization economically debatable. However, considering vanadium as a by-product of the washing of oil fly ash, its recovery may contribute, at least, to reduce the net cost of the treatment by the ...

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Ultrasound-assisted leaching of vanadium from fly ash ...

2020-1-10  In this work, vanadium (V) was selectively extracted from fuel-oil fly ash using a leaching process utilizing organic acids extracted from lemon juice with assistance from ultrasound and H2O2. Response Surface Methodology (RSM) was used to optimize

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RECOVERY OF VANADIUM AND NICKEL FROM OIL FLY

2017-5-31  cleaning process, so that the economic value of the OFA can be further maximized. The selection of OFA cleaning and metal (mainly vanadium and nickel) recovery processes is heavily dependent on the properties of the OFA such as ash content, metal composition oxidization state, sulfur content, pH, and particle size.

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RECOVERY OF VANADIUM AND NICKEL FROM

2012-2-7  Processing of vanadium-containing flyash was investigated by Pickles and Alcock (1983). An extended arc flash reactor was employed to treat a flyash containing about 8% NiO and 42% V2O5. Anthracite and petroleum coke were used as reducing agents. A FeNi alloy was first ... ash was placed in each of the three crucibles along with a given amount ...

Read More

Vanadium Recovery from Oil Fly Ash by Carbon Removal

This research mainly focuses on the recovery of vanadium from oil fly ash by carbon removal and the roast-leach process. The oil fly ash contained about 85% unburned carbon and 2.2% vanadium by weight. A vanadium-enriched product was obtained after carbon removal, and the vanadium content of this product was 19% by weight. Next, the vanadium-enriched product was roasted with sodium

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Simultaneous recovery of vanadium and nickel from power ...

Simultaneous recovery of vanadium (V) and nickel (Ni), which are classified as two of the most hazardous metal species from power plant heavy fuel fly-ash, was studied using a hydrometallurgical process consisting of acid leaching using sulfuric acid. Leaching parameters were investigated and optimi

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PROCESS FOR THE COMPLETE UTILIZATION OF OIL

2013-7-18  The fly ash produced by oil sands operations in northern Alberta represents a large, high grade, potential resource for vanadium production in Canada. After extensive batch testing, a conceptual process flow sheet for the recovery of vanadium from oil sands fly ash was developed.

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Chapter 6.12 Vanadium - World Health Organization

2013-10-10  values (up to 400 μg/g) in areas polluted by fly ash (4). The concentration of vanadium in water is largely dependent on geographical location and ranges from 0.2 to more than 100 μg/litre in freshwater (2), and from 0.2 to 29 μg/litre in seawater (3). The ocean floor is the main long-term sink of vanadium in the global circulation (4).

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Making Vanadium Vanitec

Vanadium bearing oil based fuels are burnt in the boilers of electric power generating plant and vanadium is left in the fly ash and boiler slags. Vanadium in these ashes and slags is recovered by the same process as for vanadium coming from Flexicoke.

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Fly Ash - Properties, Types, Mechanism and Uses - The ...

Fly ash is a heterogeneous by-product material produced in the combustion process of coal used in power stations. It is a fine grey coloured powder having spherical glassy particles that rise with the flue gases. As fly ash contains pozzolanic materials

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Vanadium Recovery from Oil Fly Ash by Carbon Removal

Vanadium Recovery from Oil Fly Ash by Carbon Removal and Roast-Leach Process MYUNGWON JUNG1 and BRAJENDRA MISHRA1,2 1.—Center for Resource Recovery and Recycling, Worcester Polytechnic Institute, Worcester, MA, USA. 2.—e-mail: [email protected] This research mainly focuses on the recovery of vanadium from oil fly ash by

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RECOVERY OF VANADIUM AND NICKEL FROM OIL FLY

2017-5-31  cleaning process, so that the economic value of the OFA can be further maximized. The selection of OFA cleaning and metal (mainly vanadium and nickel) recovery processes is heavily dependent on the properties of the OFA such as ash content, metal composition oxidization state, sulfur content, pH, and particle size.

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Vanadium Recovery from Fly Ash ? a Review - OneMine

2014-1-1  Vanadiferous magnetite iron ores are used for producing vanadium as well. In addition, it is known that vanadium can be recovered from the ashes of crude oil and petroleum coke. The process for treating boiler residues, fly ash and petroleum coke is similar

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RECOVERY OF VANADIUM AND NICKEL FROM

2012-2-7  Processing of vanadium-containing flyash was investigated by Pickles and Alcock (1983). An extended arc flash reactor was employed to treat a flyash containing about 8% NiO and 42% V2O5. Anthracite and petroleum coke were used as reducing agents. A FeNi alloy was first ... ash was placed in each of the three crucibles along with a given amount ...

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Recovery of vanadium and nickel in fly ash from heavy oil ...

Recovery of vanadium and nickel from an oil fly ash is studied in a two-step leaching process, carried out under ambient pressure without calcination. In the leaching, nickel is dissolved with NH 4 Cl in the first step, followed by vanadium leaching with Na 2 CO 3 in the second step. Both leachants depress the dissolution of iron and aluminium ...

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Making Vanadium Vanitec

Vanadium bearing oil based fuels are burnt in the boilers of electric power generating plant and vanadium is left in the fly ash and boiler slags. Vanadium in these ashes and slags is recovered by the same process as for vanadium coming from Flexicoke.

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Extraction of vanadium from athabasca tar sands fly ash ...

The process developed involves a high temperature (875 to 950 °C) roasting of the fly ash in the presence of sodium chloride and water vapor carried out in a rotary screw kiln, followed by dilute sodium hydroxide atmosphereic leaching (98 °C) to solublize about 85 pet of

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Correction: Ultrasound-assisted leaching of vanadium from ...

2020-10-19  Correction: Ultrasound-assisted leaching of vanadium from fly ash using lemon juice organic acids G. Rahimi, S. O. Rastegar, F. Rahmani and T. Gu, RSC Adv., 2020, 10, 38378 DOI: 10.1039/D0RA90109A This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further

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6. POTENTIAL FOR HUMAN EXPOSURE

2012-12-6  These compounds are emitted as fly ash into the atmosphere (Mamane and Pirrone 1998). VANADIUM 125 6. POTENTIAL FOR HUMAN EXPOSURE . Table 6-1. Releases to the Environment from Facilities that Produce, Process, or Use Vanadium (Except When Contained in an Alloy) a. Reported amounts released in pounds per year. b . State. c . RF. d . Air. e ...

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Fly Ash - Properties, Types, Mechanism and Uses - The ...

Fly ash is a heterogeneous by-product material produced in the combustion process of coal used in power stations. It is a fine grey coloured powder having spherical glassy particles that rise with the flue gases. As fly ash contains pozzolanic materials

Read More