Fly Ash Vanadium Extraction Companies

Vanadium Recovery from Oil Fly Ash

Vanadium Recovery from Oil Fly Ash - ParaTech Global

Know Details

REMOVAL OF NICKEL WHILE PRODUCING VANADIUM PENTOXIDE BY FLY ASH

HI, we are currently working with the project of processing fly ash (source Venezuela) and producing vanadium pentoxide from the same. We are fusing fly ash with sodium salt and then leaching the resultant to produce AMV and then vanadium pentoxide. but as the fly ash also contain Nickel which we want to remove from product. what could be the way …

Know Details

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 …

Know Details

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 …

Know Details

Valorization of fly ash by nickel ferrite and vanadium oxide …

Semantic Scholar extracted view of "Valorization of fly ash by nickel ferrite and vanadium oxide recovery through pyro-hydrometallurgical processes: Technical and environmental assessment." by A. Hamidi et al. ... Extraction and separation of vanadium and nickel from fly ash produced in heavy fuel power plants.

Know Details

Recovery of vanadium and nickel from heavy oil fly ash …

Seggiani et al. 69 investigated the extraction of nickel from sulfate solution leachate of Orimulsion fly ash after vanadium recovery using ion exchange chelating resins. Three …

Know Details

Germanium and Gallium Extraction from Gasification Fly …

historical Puertollano IGCC fly ash samples selected in this study are representative of the range of Ge and Ga concentrations and water Ge extraction yields found in t his fly ash 11. The Ge and Ga contents of the new fly ash samples are also in the range determined for these elements in this gasification fly ash.

Know Details

Vanadium recovery from oil fly ash by leaching, …

Europe PMC is an archive of life sciences journal literature. 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 …

Know Details

Recovery of Gallium and Vanadium from Coal Fly Ash

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 sulfuric acid. These metals were then concentrated by use of a …

Know Details

Ecological treatment of El Kriymat boiler ash for recovering vanadium …

Extraction procedure Preparation of pregnant solution. The workable sulfate leach liquor for V, Ni, and Zn extraction was made by combining 645 g of the magnetic fraction concentrate from boiler fly ash with 180 g/L H 2 SO 4 under optimal agitation leaching conditions. The final volume of the produced sulfate leach liquid (after …

Know Details

Extraction of vanadium from athabasca tar sands fly …

Extraction of Vanadium from Athabasca Tar Sands Fly Ash C. O. GOMEZ-BUENO, D. R. SPINK AND G. L. REMPEL The production of refinery grade oil from the Alberta tar sands deposits as currently ... vanadium from petroleum fly ash by straightforward acidic leaching z3,s,9 and given the very nature of the GCOS fly ash …

Know Details

The extraction of vanadium from titanomagnetites and other sources

Navarro et al. (2007) succeeded in extracting vanadium from oil fly ash with both sulphuric acid and sodium hydroxide lixiviants. In addition to the economic benefit of recovering valuable material from a waste product, this also had the effect of reducing the toxicity of the fly ash, making it easier to dispose of.

Know Details

Phase transformation mechanism of boiler ash roasted with …

The effect of roasting and leaching variables on vanadium extraction from boiler ash, such as roasting temperatures, NaCl dosages, roasting time, and solid:liquid ratios has been studied. The prepared Boiler ash–NaCl mixture has been roasted in the temperature range 700–1000 ℃, and then, the obtained roast has been leached using …

Know Details

Vanadium recovery from oil fly ash by leaching, precipitation …

The present work focuses on the design of integrated processes for vanadium recovery from oil fly ash. The processes firstly consist in a leaching step, either alkaline or acidic, and a second step of metal recovery from the leachates, involving …

Know Details

Recovery of Vanadium and Nickel from a High CaCO_3 …

In this study, it was aimed to extract vanadium (V) and nickel (Ni) from a petroleum coke ash (PCA) using a roasting process without additives, followed by leaching with sulfuric acid (H_2SO_4). The experiments were designed based on the Taguchi approach, taking into account the parameters of temperature, acid concentration, time, …

Know Details

Recovery of vanadium and nickel in fly ash from heavy oil

Know Details

Phase transformation mechanism of boiler ash roasted with …

Boiler ash, or oil ash, is a solid waste produced by burning heavy fuel oil (HFO) in electrical power plants. In addition to carbon, it usually contains V (4.4–19.2%) and Ni (2.7–8.5%), and therefore, they are regarded as promising resources for vanadium extraction [1,2,3].More than 4000 metric tons of oil ashes are generated annually from …

Know Details

Transformation and Distribution of Vanadium Phases in …

The vanadium in fly ash mainly existed in organic matter, aluminosilicate and Fe–Mn oxides, and the other vanadium existed in exchangeable fraction. Through the burning process, the vanadium was released and enriched in fly ash. ... (2010) Analysis on roasting process of vanadium extraction from stone coal [J]. Nonferrous Metals …

Know Details

Vanadium, Chemical Element

Fly ash is a powdery material produced during the purification of iron. ... of iron and vanadium. It can be used in place of pure vanadium in making alloys. Ferrovanadium saves companies the cost of making pure vanadium metal. Isotopes Two naturally occurring isotopes of vanadium exist, vanadium-50 and vanadium-51. ... Extraction …

Know Details

Recovery of vanadium from heavy oil and orimulsion fly ashes

Extraction of vanadium from black shale using pressure acid leaching. Li Minting C. Wei Gang Fan Cun-xiong Li Deng Zhigan Li Xingbin. Environmental Science, Chemistry ... 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 …

Know Details

Recovery of vanadium and nickel from heavy oil fly ash …

The optimum parameters for bioleaching of V and Ni from HOFA are; the fly ash concentration is 1% (w/v), pH is 6 for V and pH is 8 for Ni, and the bioleaching time …

Know Details

Process Development for Recovery of Vanadium and

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 …

Know Details

Extraction and separation of vanadium and nickel from fly ash …

Al-Ghouti et al. [45] used Akita's procedure with some modifications for extraction and separation of vanadium (V) and nickel (Ni) from fly ash in the Jordanian Central Electricity Generating ...

Know Details

A sustainable method for germanium, vanadium and lithium extraction …

DOI: 10.1016/j.fuel.2021.122844 Corpus ID: 245243985; A sustainable method for germanium, vanadium and lithium extraction from coal fly ash: Sodium salts roasting and organic acids leaching

Know Details

A sustainable method for germanium, vanadium and lithium extraction

The current research examined the extraction of germanium, vanadium, and lithium from coal fly ash (CFA) using a sequential sodium salt roasting and organic acid leaching process. To this end, three sets of experiments were performed. In all experiments, CFA was roasted with salt at 850 °C and then leached with an organic acid.

Know Details

Recovery of gallium and vanadium from gasification fly ash

The Puertollano Integrated Coal Gasification Combined Cycle (IGCC) Power Plant (Spain) fly ash is characterized by a relatively high content of Ga and V, which occurs mainly as Ga2O3 and as Ga3 ...

Know Details

A sustainable method for germanium, vanadium and lithium extraction

For each experiment, 1.00 g of coal fly ash was thoroughly mixed with 0.50 g of Na 2 CO 3, then transferred to ceramic crucibles and treated in a furnace for two hours at 850 • C in order to ...

Know Details

A study of the extraction of vanadium and nickel in oil-fired fly ash …

Canada's Petrofina Company had designed a 6000-lb/day pilot plant to recover vanadium [6], where the vanadium in the fly ash was leached with sulfuric acid. ... When leaching fly ash in sodium hydroxide solution, it is observed that the extraction rate of vanadium in fly ash increases to 80% at a concentration of 2 N sodium. …

Know Details

Metals | Free Full-Text | Vanadium and Nickel Recovery from …

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.

Know Details

A study of the extraction of vanadium and nickel in oil-fired fly ash …

The results of leaching fly ash in sodium hydroxide solutions of different concentrations is shown in Fig. 4.It can be seen that along with the increase in the concentration of sodium hydroxide, the pH of the leached EP fly ash increases from 8.7 to 12.9, and the extraction of vanadium increases from 2.6 to 45%.

Know Details