• Vanadium recovery from oil fly ash by leaching

    @article{osti_21023865 title = {Vanadium recovery from oil fly ash by leaching precipitation and solvent extraction processes} author = {Navarro R and Guzman J and Saucedo I and Revilla J and Guibal E} abstractNote = {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

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  • Process Development for Recovery of Vanadium and Nickel

    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 from other metals in each

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  • Commercial Recovery of Metals From Coal Fly Ash

    Annual production of fly ash may be as much as 15 billion tonnes globally 2 The largest use for coal fly ash is for construction purposes but data suggests that despite shortages of cementitious Class C fly ash in some regions a considerable proportion of the total fly ash produced globally may be under utilized (eg used as low value fill material) or unutilized 3 4 In addition some

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  • Vanadium Recovery from Oil Fly Ash by Carbon Removal and

    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 22% vanadium by weight A vanadium enriched product was obtained after carbon removal and the vanadium content of this product was 19% by weight

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  • THE PREPARATION OF COMMERCIAL GRADE VANADIUM

    method of processing the vanadium from fly ash to a finished product have been recorded in Table 3 In these tests the quantity of acid used was equivalent to 3g H 2 SO 4 /g V205 contained in the fly ash In Tests 1 and 2 of Table 3 the leaching conditions were based on those used in Test 8 Table 2 which produced a satisfactory and econo

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  • Chapter 612 Vanadium World Health Organization

    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

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  • VANADIUM EXHIBIT 1 EPA Archives

    molybdenum or phosphorus In the United States vanadium is recovered (1) as a principal mine product (2) as a coproduct from carnotite ores and (3) from ferrous slag as a byproduct in the production of elemental phosphorus Increasingly it is also being recovered by secondary processing of petroleum refinery residues fly ash and spent

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  • Leaching Kinetics and Recovery of Vanadium from Egyptian

    Leaching Kinetics and Recovery of Vanadium from Egyptian Boiler Ash Under Alkaline Oxidizing Conditions ( 69 ) improves leaching efficiency of Vanadium; increase stirring speed usually increases the rate of leaching due to the suspension of the compound particles and decreases the thickness of the mass transfer bound

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  • Fly Ash Processing Vanadium fifilouch

    fly ash processing vanadium nkozihomcoza US3873669A Process for treatment of vanadium containing 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

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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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  • (PDF) Ferrovanadium production from petroleum fly ash and

    According to the information in literature high temperature behaviour of the fly ash and flue dust is exam (Mambote et al 2008) hydrometallurgical processing is usually ined with a combined approach of chemical thermal and off gas used for the recovery of vanadium from the fly ash due to the rel

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  • (PDF) Ferrovanadium production from petroleum fly ash and

    According to the information in literature high temperature behaviour of the fly ash and flue dust is exam (Mambote et al 2008) hydrometallurgical processing is usually ined with a combined approach of chemical thermal and off gas used for the recovery of vanadium from the fly ash due to the rel

    [More]
  • RECOVERY OF VANADIUM AND NICKEL FROM PETROLEUM

    RECOVERY OF VANADIUM AND NICKEL FROM PETROLEUM FLYASH Masud A Abdel latif Mintek Randburg Republic of South Africa [email protected] Key words Flyash DC arc furnace Pre treatment Smelting Vanadium Nickel Extraction Recovery ABSTRACT Flyash is a powdery residue generated by the power stations that use heavy oil as the

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  • Vanadium Wikipedia

    Vanadium is a chemical element with the symbol V and atomic number 23 It is a hard silvery grey ductile malleable transition metal The elemental metal is rarely found in nature but once isolated artificially the formation of an oxide layer (passivation) somewhat stabilizes the

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  • Processing of vanadium a review ScienceDirect

    A publication titled The Economics of Vanadium (2000) cited that vanadium activity is represented within 46 countries in areas such as exploration mining processing and manufacture of associated products The main companies engaged in production of vanadium metal and its alloys consist of Kachkanar GOK Highveld Steel & Vanadium Corporation Ltd and Xstrata AG which are both located in

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  • Extraction and separation of vanadium and nickel from fly ash

    Extraction and separation of vanadium and nickel from fly ash 2018 09 01 Share us 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

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  • Recovery of vanadium and nickel from petroleum flyash

    Recovery of vanadium and nickel from petroleum flyash Recovery of vanadium and nickel from this ash is also of economical concern Thermal processing of petroleum fly ash for vanadium

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  • Ferrovanadium production from petroleum fly ash and BOF

    Nov 01 2010· Two waste ash residues of BOF steelmaking flue dust and petroleum fly ash are used as raw materials and the residue carbon from the fly ash is used as reducing agent The ferrovanadium with about 20 wt% vanadium is obtained This proves that a recipe based waste processing can be a sustainable option for the future waste management

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  • PROCESS FOR TREATMENT OF VANADIUM CONTAINING FLY ASH

    Mar 25 1975· The present invention relates to a process for treatment of fly ash derived from bituminous or petroleum products for the purpose of solubilizing the vanadium present as a vanadate The ash contains 20 70 percent free carbon with the remainder comprising mineral matter composed mainly of silica and alumina and up to 15 percent by weight V 2 O 5

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  • Vanadium Recovery from Oil Fly Ash by Carbon Removal and

    Nov 13 2017· 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 22% vanadium by weight A vanadium enriched product was obtained after carbon removal and the vanadium content of this product was 19% by weight

    [More]
  • Extraction of Vanadium from Fly Ash Produced in Heavy Fuel

    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

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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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  • Leaching Kinetics and Recovery of Vanadium from Egyptian

    Leaching Kinetics and Recovery of Vanadium from Egyptian Boiler Ash Under Alkaline Oxidizing Conditions ( 69 ) improves leaching efficiency of Vanadium; increase stirring speed usually increases the rate of leaching due to the suspension of the compound particles and decreases the thickness of the mass transfer bound

    [More]
  • Vanadium recovery from oil fly ash by leaching

    @article{osti_21023865 title = {Vanadium recovery from oil fly ash by leaching precipitation and solvent extraction processes} author = {Navarro R and Guzman J and Saucedo I and Revilla J and Guibal E} abstractNote = {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

    [More]
  • Processing of Vanadium A Review ResearchGate

    Acid leaching is an effective method to recover vanadium from the vanadium bearing resources such as stone coal spent catalysts and fly ash for its high leaching efficiency and low energy

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  • (PDF) Fly Ash | خالد عبد الأمير Academiaedu

    The use of plasma reactors to produce FeV alloys from vanadium oxides was studied by MacRae et al (1976) and by Minura and Taniuchi (1977) 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

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