extracting vanadium from stone

  • Vanadium Transitions during Roasting-Leaching Process of

    vanadium precipitation and calcination 6–8 . For the process of vanadium extraction from stone coal the vanadium recovery by the roasting-leaching procedure is around 65–75 while for other procedures such as ion exchange solvent extraction and vanadium precipitation the vanadium recoveries are more than 97 9 10 .

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  • Study on Extraction of Vanadium from High Acid Leach

    A new extractant HBL 101 was used to directly extract vanadium from high acid leach solution of stone coal. The effects of acidity and Eh of feed time phase ratio and temperature on the extraction of vanadium were investigated. The extraction distribution isotherm was also obtained. The results showed that the extraction of vanadium reached 98 in single stage with A/O ratio of 1 1 at 35 45

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  • Removal of vanadium from vanadium-containing wastewater

    Vanadium is one of the rare metals and it is also a kind of strategic source. Right now vanadium is mainly extracted from stone coal and vanadium slag by adding sodium chloride and calcium oxide. Likewise elements such as chromium arsenic mercury lead and cadmium were associated with the extraction process.

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  • Leaching of vanadium from stone coal with sulfuric acid

    The effects of roasting mass ratio of H2SO4 to stone coal leaching temperature liquid-to-solid ratio grinding fineness of stone coal and two-stage counter-current leaching on the vanadium leaching ratio were studied. The results show that the vanadium leaching ratio of roasted stone coal through two-stage counter-current leaching can reach 65.1 at the mass ratio of H2SO4 to stone coal of

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  • from Stone Coal by Roasting with MgOMDPI

    medicine vanadium redox batteries and so on 1 2 . Stone coal is a particular vanadium ore resource in China and its gross reserves of vanadium account for more than 87 of the domestic reserves of vanadium 3–5 . Therefore extracting vanadium from stone coal is an important way to obtain vanadium pentoxide.

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  • Recovery of vanadium from alkaline leaching solution from

    vanadium recovery was 90.9 . KEYWORDS vanadium pentoxide purification extraction INTRODUCTION The classical technology for extracting vanadium from stone coal has two main problems low vanadium recovery (<50 ) and the production of environmen-tal pollutants1 2 and is therefore being eliminated gradually. In recent years researchers have

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  • Production Of Vanadium Extraction From Stone Coal In The

    ferroalloynet The output of vanadium extraction from stone coal increased and then decreased in the first three quarters of 2019. From January to March a few of the enterprises that actively resumed production affected by last year s high vanadium price began to produce.

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  • The Study on Leaching Vanadium from Stone Coal with Alkali

    This study used the technique of pelletization-oxidation roasting-alkali leaching to extract vanadium from stone coal the effects of roasting temperature roasting time leaching temperature leaching agent concentration leaching time leaching L/S were investigated.With this technique it has got a result of leaching rate was as high as 88.38 .The results indicate that roasting temperature

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  • Recovery of vanadium from alkaline leaching solution from

    vanadium recovery was 90.9 . KEYWORDS vanadium pentoxide purification extraction INTRODUCTION The classical technology for extracting vanadium from stone coal has two main problems low vanadium recovery (<50 ) and the production of environmen-tal pollutants1 2 and is therefore being eliminated gradually. In recent years researchers have

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  • Extracting Vanadium from Stone Coal by a Cyclic Alkaline

    In order to achieve an efficient and economical approach on extracting vanadium from stone coal a cyclic alkaline leaching method was studied in this work. The effects of operating parameters including the NaOH concentration temperature reaction time and liquid-solid ratio on vanadium leaching efficiency were investigated. Also we studied the influence of caustic soda dosage on the

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  • 10.1016/j.fuel.2014.10.068 DeepDyve

    Jun 11 2020 · In China the gross reserve of vanadium in stone coal is estimated to be about 1.18 million tons. In terms of V 2 O 5 amount it takes more than 87 of China s total domestic reserve of vanadium. In recent years the V 2 O 5 extracted from stone coal has reached 40 of the totally produced V 2 O 5 in China 3 .

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  • Adsorption of Vanadium (IV) on the Synthesized D2EHPA-TBP

    Introduction. Vanadium (V) is an important rare element with unique and excellent physical and chemical properties which is widely used in alloys catalyst and vanadium redox battery 1 2 .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 consumption 3 4 .

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  • Analysis On The Output From Stone Coal In May 2020

    ferroalloynet According to the incomplete statistics of ferroalloynet in May 2020 there are 13 stone coal vanadium extraction enterprises in total and another 12 enterprises are closed. The output of 25 stone coal vanadium extraction enterprises in May is 825 tons 70 tons less than that in April including 675 tons of vanadium pentoxide 150 tons of ammonium metavanadate and the

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  • Mechanism of Enhancing Extraction of Vanadium from Stone

    In this paper the extraction of vanadium from stone coal by roasting with MgO and leaching with sulfuric acid has been investigated and the mechanism analysis of stone coal roasting with MgO was studied. The results indicated that under the conditions that the mass fraction of the particles with grain size of 0–0.074 mm in raw ore was 75 the roasting temperature was 500 °C the roasting

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  • Direct Acid Leaching of Vanadium from Stone Coal

    Direct Acid Leaching of Vanadium from Stone Coal. This technique was widely adopted by small-scale factories for extracting vanadium from stone coal but much caustic gasses and ultra-high

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  • A novel approach for pre-concentrating vanadium from stone

    Stone coal a kind of important vanadium-bearing resources in China accounts for about 87 of the domestic reserves of vanadium. But the currently developed techniques to extract vanadium from

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  • AMV Output of Shaanxi Huayuan in 2018-2019 Vanadium Price

    In the second half of 2019 the output of extracting vanadium from stone coal decreased gradually with the low vanadium price and environmental protection supervision. In terms of annual total output the output of extracting vanadium from stone coal in 2018-2019 is relatively stable but there are some enterprises with obvious increase among

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  • AMV Output of Shaanxi Huayuan in 2018-2019 Vanadium Price

    In the second half of 2019 the output of extracting vanadium from stone coal decreased gradually with the low vanadium price and environmental protection supervision. In terms of annual total output the output of extracting vanadium from stone coal in 2018-2019 is relatively stable but there are some enterprises with obvious increase among

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  • Phase I Green Stone Coal Vanadium Production Line Of West

    After the completion of the project the annual treatment capacity of vanadium-bearing stone coal will reach 500 000 tons with an annual output of 3850 tons of ammonium metavanadate 98 which will contribute to the high-quality development of the Group Company.

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  • Analysis On The Output From Stone Coal In Vanadium

    According to incomplete statistics the output of 26 stone coal vanadium extraction enterprises in July is 995 tons in August among which the output of vanadium pentoxide is 530 tons and the output of ammonium metavanadate is 465 tons. Region. The output of ammonium metavanadate(Ton)

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  • (PDF) The technology of extracting vanadium from stone

    The technology of extracting vanadium from stone coal in China History current status and future prospects Article (PDF Available) in Hydrometallurgy 109(1) 116-124 · September 2011 with 1 737

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  • The technology of extracting vanadium from stone coal in

    Stone coal is an important vanadium-bearing resource in China and the gross reserves of vanadium in stone coal accounts for more than 87 of the domestic reserves of vanadium. Hence much attention has been paid to research on extracting vanadium from stone coal.

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  • Efficient Extraction of Vanadium from Vanadium–Titanium

    In this paper potassium salt roasting additives were applied to extract vanadium from vanadium–titanium magnetite concentrate. Meanwhile the mechanisms of potassium salt roasting and acid leaching kinetics were investigated. The results indicate that potassium salt roasting additives are more efficient than sodium and calcium salt and that K2SO4 works best.

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  • Analysis On The Output From Stone Coal In May 2020

    ferroalloynet According to the incomplete statistics of ferroalloynet in May 2020 there are 13 stone coal vanadium extraction enterprises in total and another 12 enterprises are closed. The output of 25 stone coal vanadium extraction enterprises in May is 825 tons 70 tons less than that in April including 675 tons of vanadium pentoxide 150 tons of ammonium metavanadate and the

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  • The technology of extracting vanadium from stone coal in

    In summary although some techniques for vanadium extraction from stone coal have been proposed and developed the current process of extracting vanadium from stone coal the low-grade vanadium-bearing ore is complicated and expensive comparing with that of recovering vanadium from high-grad vanadium-bearing resources such as slag

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  • Experimental Study on Extraction of Vanadium from Stone

    The microwave is the electromagnetic radiation with the frequency in the between 300 MHz 300GHz. The microwave technology in metallurgy application research are mainly in heating drying oxide reduction mineral processing such as the pretreatment of refractory gold and waste treatment and metal recovery. The stone coal vanadium ore grinded was dealt with the microwave pretreatment in this

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  • Improved extraction of vanadium from a Chinese vanadium

    Vanadium is a rare metal mainly used in the steel industry. Vanadium‐bearing stone coal is an important source of vanadium in China. The common process used to extract vanadium from the stone coals is roast‐leach which has the disadvantages of low vanadium recovery and significant pollution.

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  • Extraction of vanadium from black shale using pressure

    Vanadium-bearing stone coal is an important vanadium resource in China therefore vanadium extraction from stone coal is given considerably more attention in this country 2 .

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  • A new process of extracting vanadium from stone coal

    A new process of extracting vanadium from the stone coal vanadium ore in Fangshankou Dunhuang area of Gansu Province China was introduced. Various leaching experiments were carried out and the

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  • (PDF) Extracting Vanadium from Stone Coal by a Cyclic

    This technique was widely adopted by small-scale factories for extracting vanadium from stone coal but much caustic gasses and ultra-high salinity wastewater are generated and the total vanadium

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  • Extraction of Vanadium from Stone Coal by Microwave

    The extraction of vanadium from stone coal was investigated by microwave-assisted sulfation roasting followed by water leaching. The results showed that this process is an effective method for the extraction of vanadium from stone coal. Microwave-assisted sulfation roasting promotes the reaction of sulfuric acid with vanadium oxides and decreases roasting time.

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  • Vanadium Pentoxide Flake Operating Rate And Output

    Home News Vanadium Pentoxide Flake Operating Rate And Output Statistics In October 2019. Region. Company. Spec. Dechang Jiuyuan Vanadium and Titanium Co. Ltd. Flake. Rotary kiln(7-8) 400. 1. 120. Dechang Hongfa Vanadium Industry Technology Co. Ltd. Flake. Rotary kiln Extracting vanadium from stone coal(1) 350. 1. 150. Chongyang

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  • Bioleaching of vanadium from barren stone coal NASA/ADS

    This study determined the optimal conditions required to obtain maximum vanadium extraction and examined the transition of mineral phases and vanadium speciation during the bioleaching process. Parameters including the initial pH value initial Fe 2 concentration solid load and inoculum quantity were examined. The results revealed that 48.92wt of the vanadium was extracted through

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  • Vanadium Transitions during Roasting-Leaching Process of

    The vanadium occurrence in stone coal water leaching and acid leaching residue was investigated by energy dispersive spectrometer (EDS) mapping and point analysis and the vanadium transitions during roasting-leaching of stone coal were revealed. In the roasting process vanadium-bearing muscovite is converted to K-Na-feldspar accompanying the liberation of vanadium.

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  • Optimization of vanadium (IV) extraction from stone coal

    Optimization of vanadium (IV) extraction from stone coal leaching solution by emulsion liquid membrane using response surface methodology. In order to further improve the vanadium (IV) extraction from stone coal leaching solution in one step and reduce the reagent consumption by emulsion liquid membrane (ELM) the experiments using response surface methodology (RSM) was

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