• Extraction and separation of vanadium and nickel from fly

    2011-9-1 · Highlights Large amounts of fly ash are produced as a result of burning diesel fuel in power stations. Ni is selectively eluted from the FA using NH 3 solution and was precipitated as NiS. V is extracted from Ni-free-FA by Na 2 CO 3 solution and precipitated by NH 4 Cl. The proposed method herein showed a high recovery (97%) for both metals.Extraction and separation of vanadium and nickel from ,2012-5-13 · Fly 2 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 to

  • Extraction and separation of vanadium and nickel from fly

    Extraction and separation of vanadium and nickel from fly ash (FA) produced in heavy fuel power plants was investigated [31]. Firstly, Ni is selectively eluted from FA using NH4OH solution andVanadium 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.

  • Vanadium recovery from oil fly ash by leaching

    2007-1-1 · The dispersion of fine particles of oil fly ash and the high solubility of vanadium may cause a dispersion of vanadium in water and soil. Due to the low toxicity of vanadium compared to other heavy metals, the accepted levels for vanadium in water supplies and irrigation water are 200 ppb and 10 mg L −1,respectively ( Juste et al., 1995 ).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

  • Vanadium Recovery from Oil Fly Ash paratechglobal

    2020-1-3 · Vanadium recovery from oil fly ash by leaching, precipitation and solvent extraction processes R. Navarro a, J. Guzman a,1, I. Saucedo a, J. Revilla b, E. Guibal c,* a Universidad de Guanajuato, Instituto de Investigaciones Cientı´ficas, Cerro de la Venada s/n, Pueblito de Rocha, C.P. 36040 Guanajuato, Gto, Mexico b Centro de Investigacio ´n y Desarrollo, Av. de los Vanadium Recovery from Oil Fly Ash by Carbon Removal ,2017-11-13 · ash. Fly ash is a fine dust generated during the combustion of fossil fuel that is mostly captured by electrostatic precipitator or other dust collection systems. The main characteristics of oil fly ash are the high concentrations of unburned carbon and vanadium.2,3 Therefore, researchers have been focused on its use as a secondary source for

  • Extraction of vanadium from athabasca tar sands fly ash

    The production of refinery grade oil from the Alberta tar sands deposits as currently practiced by Suncor (formally Great Canadian Oil Sands Ltd.—GCOS) generates a substantial amount of petroleum coke fly ash which contains appreciable amounts of valuable metals such as vanadium, nickel and titanium. Although the recovery of vanadium from petroleum ash is a well Chapter 6.12 Vanadium World Health Organization,2013-10-10 · fine fly ash with a long atmospheric residence time. Vanadium concentrates on the surface of particulate matter from coal combustion. The concentration of vanadium in fly ash from residual fuel-oil burning averages around 8% (range 2-18%), representing 56% (39-74%) of the vanadium concentration in fuel.

  • Extraction and separation of vanadium and nickel from

    2012-5-13 · Fly 2 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 to Extraction and separation of vanadium and nickel from fly ,In the world, large amounts of fly ash(FA) are produced as a result of burning heavy oil in power plants every year. Extraction of metals from FA is an important industrial/environmental issue to assess metal’s mobility and applications. Large.

  • RECOVERY OF VANADIUM AND NICKEL FROM

    2012-2-7 · flyash followed by a combustion step to remove carbon and sulphur. The treated ash is then reduced by smelting in a DC arc furnace, using ferrosilicon or aluminium, to produce a vanadium alloy and a disposable slag. A testwork program was designed to demonstrate the application of this flowsheet to the ash. The test program covered 60 kVA inductionExtraction of Vanadium from Fly Ash Produced in Heavy ,2020-8-24 · vanadium, heavy fuel, fly ash, leaching, extraction 1. Introduction The power generation station that uses heavy oil produces a solid residue called fly ash [1]. Fly ash generated during oil combustion. Fly ash is rich in Ni, V, Fe, Mo, Mg, Na and C and among these metals Ni and V are the most valuable.

  • Hydrometallurgical Extraction of Vanadium from

    2012-9-1 · W ith continual development of resources in the world, high-grade ores are becoming exhausted gradually. With the present sources insufficient to supply the demand, secondary sources are increasingly exploited for recovery of metals such as vanadium. The oil-fired fly ash (OFA) that is produced during the combustion of heavy oil for energy production is an 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 usually found as the

  • Vanadium recovery from spent iron sorbent used for the

    Vanadium has been successfully recovered from oil fly ash (Chmielewski et al., 1997; Navarro et al., 2007; Vitolo et al., 2000), Bayer sludge (Gomes et al., 2017; Han et al., 2018), spent catalyst (Chen et al., 2007; Mazurek, 2013), and alloy scrap (Luo et al., 2003). The recovery procedure from these by-products has normally included leachingSimultaneous recovery of vanadium and nickel from power,2014-12-1 · 1. Introduction. Fly ash is a solid residue which is collected in off-gas treatment system of power plants using heavy fuel oils. This residue is an important secondary resource for vanadium after primary resource of the ore concentrates and the metallurgical slag (Xiao et al., 2010).The production of these fly ashes is of environmental concern (Tsai and Tsai, 1998, Al

  • 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 Extraction of vanadium from athabasca tar sands fly ash,The production of refinery grade oil from the Alberta tar sands deposits as currently practiced by Suncor (formally Great Canadian Oil Sands Ltd.—GCOS) generates a substantial amount of petroleum coke fly ash which contains appreciable amounts of valuable metals such as vanadium, nickel and titanium. Although the recovery of vanadium from petroleum ash is a well

  • RECOVERY OF VANADIUM AND NICKEL FROM

    2012-2-7 · flyash followed by a combustion step to remove carbon and sulphur. The treated ash is then reduced by smelting in a DC arc furnace, using ferrosilicon or aluminium, to produce a vanadium alloy and a disposable slag. A testwork program was designed to demonstrate the application of this flowsheet to the ash. The test program covered 60 kVA inductionExtraction of Vanadium from Fly Ash Produced in Heavy ,2020-8-24 · vanadium, heavy fuel, fly ash, leaching, extraction 1. Introduction The power generation station that uses heavy oil produces a solid residue called fly ash [1]. Fly ash generated during oil combustion. Fly ash is rich in Ni, V, Fe, Mo, Mg, Na and C and among these metals Ni and V are the most valuable.

  • RECOVERY OF VANADIUM FROM OIL-FIRED BOILER

    vanadium sources, and part of the vanadium in fly ash from thermal power plants has actually been re-covered commercially in Japan. Most of the tech-nology used industrially includes roasting of the ash at high temperature and subsequent leaching with water.3)4) In this work, the recovery of metal values from anHydrometallurgical Extraction of Vanadium from,2012-9-1 · W ith continual development of resources in the world, high-grade ores are becoming exhausted gradually. With the present sources insufficient to supply the demand, secondary sources are increasingly exploited for recovery of metals such as vanadium. The oil-fired fly ash (OFA) that is produced during the combustion of heavy oil for energy production is an

  • 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 RECOVERY OF VANADIUM AND NICKEL FROM OIL FLY ,2017-5-31 · Oil fly ash (OFA) is a by-product originated from burning of crude and residual oil for vanadium from the OFA, however, base leaching may require additional leaching processes to recover nickel and carbon. Therefore, strong acid, sulfuric acid in this case with concentration ranging from 0.5N to 1N, solid/liquid ratio of 1:10 and mild

  • Vanadium recovery from spent iron sorbent used for the

    Vanadium has been successfully recovered from oil fly ash (Chmielewski et al., 1997; Navarro et al., 2007; Vitolo et al., 2000), Bayer sludge (Gomes et al., 2017; Han et al., 2018), spent catalyst (Chen et al., 2007; Mazurek, 2013), and alloy scrap (Luo et al., 2003). The recovery procedure from these by-products has normally included leachingVANADIUM 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 usually found as the

  • 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 Extraction of vanadium from electrostatic precipitator,2019-10-17 · Ind. Eng. Chem. Res. All Publications/Website. OR SEARCH CITATIONS