Fly Ash Processing Vanadium

Vanadium amount increased from 16.2 in ash to 41.4–48.1 V 2 O 5 wt% in slag. ... It is generated in the production of metal manganese by the electrolysis process. In this research, EMR, fly ash, and clinker were blended to make fly ash-based cementitious material (FAC) to investigate the effect of EMR on strength properties, hydration ...

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

It is important to mention that most of the metals present in fuel oil fly ash are non-process elements, i.e., those elements that have no active part in the process (fuel burning in our case). The nonprocess elements should be monitored and controlled as they may lead to operating drawbacks as well as dead load [6,7].

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 …

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. The metals Ni and V are separated …

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.

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 …

AbstractThis 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 …

Metallurgical slags, vanadium processing slams, vanadium-containing quartzites, shales, pitch [16], uranium ore [17], bauxites [18], ash residuals from power units burning heavy oil fractions [19 ...

The invention is addressed to the recovery of vanadium by the treatment of fly ash derived from bituminous or petroleum products, such as bituminous schists. In accordance with the practice of this invention, the fly ash is treated with a concentrated caustic soda solution selectively to solubilize vanadium, and in adding calcium oxide to the reacting solution in an amount within …

Extraction and separation of vanadium (V) and nickel (Ni) from FA is achieved using Akita's procedure with some modifications. In the first step, Ni is selectively eluted from FA …

As a high temperature processing route, an arc flash reactor was reported to process the fly ash using anthracite and petroleum coke as the reductant for producing ferronickel and ... reported an alternative flow sheet to recover vanadium from fly ash for ferrovanadium production: drying, de-carburization, de-sulfurization and smelting ...

Fly ash – Wikipedia, the free encyclopedia. Fly ash is one of the residues generated in combustion, and comprises the fine particles that rise with the flue gases.Ash which does not rise is termed bottom ash. » Free Online Chat Fly ash – SourceWatch. Fly ash is one kind of waste produced by coal-fired power plants. Pollution control equipment used in coal combustion …

A recovery of 89% vanadium was achieved and the whole process was carried out with a 100 kVA DC arc furnace with a charge of about 150 kg of 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 …

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 …

The fly ash (FA) from the combustion of heavy oil in power stations is characterized by fine particles containing toxic metals. The sample utilized in this study was gathered from the dust precipitators of seven heavy-oil-consuming Iranian power plants. Substantial quantities of heavy metals, particularly vanadium, iron, and nickel, have been …

Reducing Environmental Pollution of Fuel Fly Ash by Extraction and Removal Vanadium Pentoxide

Hydrometallurgy, 2001. 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 fraction, followed by an acid leaching and an oxidative precipitation of vanadium pentoxide.

The steadily growing demand for non-ferrous metals, a shift to heavier crude oil recovery and tightened environmental standards have increased the importance of …

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. ..., 19–23, DOI: 10.3103/S1067821211010251. 13 R. R. Moskalyk and A. M. Alfantazi, Processing of vanadium: a review, Miner. Eng., 2003, 6(9), 793–805, DOI: 10.1016/S0892-6875(03)00213-9 ...

Several processes are available for obtaining vanadium from fly ash, such as roasting vanadium bearing materials in the presence of sodium salt. The salt roasted calcine is …

Several processes have been developed and reported in the literature for extracting vanadium from the fly ash, such as salt roasting combined with alkaline or acidic leaching; or …

Three different steps, such as carbon burning, salt roasting, and water leaching, were conducted to extract vanadium from the oil fly ash. First, a vanadium-enriched product …

‪PhD in Hydrometallurgy & Mineral Processing, University of Tehran‬ - ‪‪Cited by 683‬‬ - ‪Hydrometallurgy‬ - ‪Bio-hydrometallurgy‬ - ‪Recycling‬ - ‪Minerals Processing‬ - ‪kinetic modelling‬ ... vanadium and lithium extraction from coal fly ash: Sodium salts roasting and organic acids leaching. H Rezaei, SZ ...

RECOVERY FROM DUSTS AND SLAGS VANADIUM RECOVERY AS FeV FROM PETROLEUM FLY ASH Y. Xiao1, C. R. Mambote2, H. Jalkanen1, Y. Yang1 and R. Boom1 1 2 Department of Materials Science and Engineering, Delft University of Technology Mekelweg 2, 2628 CD Delft, the Netherlands; [email protected] Consultek Research, Overhandstraat 2, 3195 SG Pernis …

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 NH4Cl ...

Vitolo et al.r Hydrometallurgy 57 (2000) 141–149 147 Table 2 Recovery and loss of vanadium during the various stages of the process, and elution of V, Fe, Na in the raw red cake washing for the three heavy oil fly ash samples Sample Fly …

extract aluminum selectively, and vanadium extraction from oil fl y ash was investigated by carbon burning and salt-roasting followed by hot water leaching. 2 Experimental Procedures 2.1 Materials 2.1.1 Oil fly ash: Fly ash, also known as flue-ash, is a dust-like material, which came from the combustion of coal or oil. Fly ash is

This study investigated the use of microwave-assisted leaching to recover the vanadium (V) and nickel (Ni) of fly ash collected from power plants. The fly ash sample was characterized using XRF, ICP-OES, powder X-ray diffraction, FESEM, and a laser particle size analyzer. ... Chemical separation of fly ash components by thermal processing using ...