fly ash processing vanadium

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 ...

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

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.

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 ...

Vanadium Extraction from Fly Ash—Preliminary Study of ...

The recovery of vanadium from heavy oil fly ash having a high carbon content was performed using a four-step process consisting of a preliminary burning in order to reduce the carbonaceous ...

Vanadium Recovery from Oil Fly Ash by Carbon Removal

2020-10-19 · 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

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

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 ...

Recovery of vanadium from a previously burned heavy oil ...

2001-12-1 · 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 process.

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).

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 ...

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

Recovery of vanadium from a previously burned heavy oil ...

2001-12-1 · 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 process.

Process Development for Recovery of Vanadium and

2018-5-31 · A process for recovering V and Ni from oil fly ash and for making the ash harmless has been developed. More than 80% of V and Ni are recovered. This process involves two-step leaching and ion exchange. The first step is leaching with water to dissolve Ni, Mg, Al, and Zn, and acid solution is used in the second step to recover V.

Process Development for Recovery of Vanadium and

A process has been developed to recover gallium and vanadium from coal fly ash in which they exist at very low concentration in a mixture of high concentration of less desirable species.

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

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.

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

Safety Data Sheet Fly Ash (All Types)

2018-9-24 · 07/31/2018 Fly Ash (All Types) Page 4 of 6 Ingredient OSHA PEL(1) ACGIH-TLV(2) Other Potassium oxide 2 mg/m3 (total, ceiling) 2 mg/m3 (total) 2 mg/m3 (total, ceiling)(4) Phosphorus pentoxide None Established None Established fn(1) OSHA PEL (Permissible Exposure Level) at 29 CFR 1910.1000)fn(2) ACGIH-TLV (American Conference of Governmental Industrial Hygienists-Threshold

Preparation of additive-free glass-ceramics from MSW ...

2020-9-10 · Remedial processing of oil shale fly ash (OSFA) and its value-added conversion into glass-ceramics. Waste Manag, 46 (2015), pp. 316-321. Article Download PDF View Record in Scopus Google Scholar. V. Savvilotidou, A. Kritikaki, A. Stratakis, K. Komnitsas, E. Gidarakos.

Thermal Processing of Petroleum Fly Ash for Vanadium ...

Xiao, Y, Jalkanen, H, Yang, Y, Mambote, CR & Boom, R 2010, Thermal Processing of Petroleum Fly Ash for Vanadium Recovery. in XXV International Mineral Processing Congress IMPC 2010. pp. 5. Thermal Processing of Petroleum Fly Ash for Vanadium Recovery.

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

Process Development for Recovery of Vanadium and

2018-5-31 · A process for recovering V and Ni from oil fly ash and for making the ash harmless has been developed. More than 80% of V and Ni are recovered. This process involves two-step leaching and ion exchange. The first step is leaching with water to dissolve Ni, Mg, Al, and Zn, and acid solution is used in the second step to recover V.

Recovery of Gallium and Vanadium from Coal Fly Ash

2006-3-20 · A process has been developed to recover gallium and vanadium from coal fly ash in which they exist at very low concentration in a mixture of high concentration of less desirable species. Aqueous solution containing 2.8 mg/ l gallium and 35 mg/ l vanadium was obtained by leaching with 1.5 mol/ l

Hydrometallurgical extraction of vanadium from ...

Parvizi, Reza, Khaki, JV, Moayed, MH and Ardani, MR 2012, Hydrometallurgical extraction of vanadium from mechanically milled oil-fired fly ash: analytical process optimization by using taguchi design method, Metallurgical and materials transactions b, vol. 43, pp. 1269-1276, doi: 10.1007/s11663-012-9709-4.

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.

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

Investigation of Vanadium Compounds in Ashes from a

2019-5-26 · An ash sample from a CFBC boiler burning petroleum coke has been examined using a variety of chemical and physical techniques both before and after phase separation. In the original sample, preliminary XRD work provided tentative evidence of one V compound. However, more detailed results were obtained from an enriched sample, and also from a sample with CaSO4 removed. These

Safety Data Sheet Fly Ash (All Types)

2018-9-24 · 07/31/2018 Fly Ash (All Types) Page 4 of 6 Ingredient OSHA PEL(1) ACGIH-TLV(2) Other Potassium oxide 2 mg/m3 (total, ceiling) 2 mg/m3 (total) 2 mg/m3 (total, ceiling)(4) Phosphorus pentoxide None Established None Established fn(1) OSHA PEL (Permissible Exposure Level) at 29 CFR 1910.1000)fn(2) ACGIH-TLV (American Conference of Governmental Industrial Hygienists-Threshold

Emeritus Professor Maria Skyllas-Kazacos | UNSW Research

Advanced control in aluminium smelting. Vanadium extraction from fly-ash and spent catalysts. Battery Research Vanadium Redox-cell batteries for remote area and load levelling applications. Commercial prototype design and development. Field testing of vanadium battery in

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