• The technology of extracting vanadium from stone coal in ...

    The production scale of most factories that extract vanadium from stone coal is only a few hundred tons of V 2 O 5 per year and the environmental problems in production give some cause for concern. The amount of V 2 O 5 extracted from stone coal only accounts for 30–40% of

  • Cited by: 335
  • Extracting vanadium from stone-coal by oxygen pressure ...

    Extracting vanadium from stone-coal by oxygen pressure acid leaching and solvent extraction DENG Zhi-gan(Fg 6), WEI Chang(Q# ), FAN Gang( ), LI Min-ting( " ), LI Cun-xiong( " , ), LI Xing-bin( " H @) Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China Received 6 July 2009; accepted 30 December 2009 Abstract: Vanadium extraction ...

  • Cited by: 83
  • 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].

  • Cited by: 5
  • 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.

  • Cited by: 335
  • (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 1,740 ...

  • Effect of vanadium occurrence state on the choice of ...

    If the vanadium compounds in stone coal exist in the amorphous Wang M.Y. et al., Effect of vanadium occurrence state on the choice of extracting vanadium technology from stone coal 115 phase form, the treatment of this type of stone coal by no-slat-roasting and dilute acid solution leaching constitutes a very efficient method, and more than 70% ...

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

    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 ...

  • Comparison of direct acid leaching process and blank ...

    Stone coal is a particular vanadium-bearing resource in China (Liu et al., 2010) due to specifically forming factors (Anjum et al., 2012), in which there are amounts of vanadium, 118 million tons in terms of V 2 O 5 . Therefore, more and more researchers are interested in extracting vanadium from stone coal.

  • Extracting Vanadium from Stone Coal by a Cyclic Alkaline ...

    Jan 03, 2017  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.

  • Cited by: 4
  • Mechanism of Enhancing Extraction of Vanadium from Stone ...

    Therefore, extracting vanadium from stone coal is an important way to obtain vanadium pentoxide. In general, most of the vanadium in stone coal mainly exists as trivalent vanadium (V(III)) which substitutes for trivalent aluminum (Al(III)) in the octahedral crystal lattice of the mica minerals as an isomorphism [ 6 , 7 , 8 ].

  • Cited by: 8
  • 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.

  • Mechanism of Enhancing Extraction of Vanadium from Stone ...

    Therefore, extracting vanadium from stone coal is an important way to obtain vanadium pentoxide. In general, most of the vanadium in stone coal mainly exists as trivalent vanadium (V(III)) which substitutes for trivalent aluminum (Al(III)) in the octahedral crystal lattice of the mica minerals as an isomorphism [ 6 , 7 , 8 ].

  • EFFICIENT EXTRACTING VANADIUM FROM STONE COAL

    Key words: vanadium, extraction, stone coal, biomass, sodium roasting INTRODUCTION Stone coal is an important vanadium resource, ac-counting for more than 87 % of Chinese vanadium stor-age [1]. Therefore, much attentions were recently fo-cused on efficient extracting vanadium from stone coal [2]. Vanadium generally was known in the state of V

  • Extraction of vanadium from stone coal by roasting in a ...

    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 ...

  • 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 ...

  • Kinetics of Extracting Vanadium from Stonecoal by Alkali ...

    Z.G. Deng et al., “Extracting Vanadium from Stone-Coal by Oxygen Pressure Acid Leaching and Solvent Extraction,” Transactions of Nonferrous Metals Society of China, 20(2010), s118–s122. CrossRef Google Scholar

  • CN102191388A - Process for extracting vanadium from stone ...

    The invention relates to a process for extracting vanadium from stone coal through two-section curing with concentrated acid. The process flow mainly comprises the following steps of: a, adding concentrated sulfuric acid into the vanadium-containing stone coal, and uniformly stirring; b, performing one-section curing on the mixture of the concentrated sulfuric acid and the vanadium-containing ...

  • A new process of extracting vanadium from stone coal ...

    Jul 28, 2010  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 results show that the vanadium ore in Fangshankou is difficult to process due to its high consumption of acid and the high leaching rate of impurities. However, the leaching rate

  • 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 ...

  • Study on Extraction of Vanadium from High Acid Leach ...

    A new extractant [email protected] 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 ...

  • vanadium stone crushing indian grinding mechines

    The technology of extracting vanadium from stone coal in ... Stone coal is widely distributed in southern provinces and autonomous region of China and Shanxi province. It is reported that the gross reserves of stone coal in these districts are estimated at 61.88 billion tons ().Vanadium is commonly founded in stone coal and the gross reserves ...

  • 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 ...

  • CN101275187A - Process for extracting vanadium by stone ...

    The invention discloses a process for using stone-like coal wet method to extract vanadium, comprising the steps of: crushing and ball-milling the stone-like coal to sieve, mix (adding additive), pickle, exchange the ions, depositing the vanadium and calcine to produce the product of vanadic oxide, the comprehensive recovery rate is larger than 80%; compared with current process, the leaching ...

  • extracting vanadium from stone - matiya.co.za

    New technologyvanadium extraction--Laohekou Lvhua ... It is a high-tech enterprise engaged in extracting vanadium from stone coal, purifying industrial flue gas, and in offering other services. The company has eleven... >> Get Quotation

  • vanadium stone crushing indian grinding mechines

    The technology of extracting vanadium from stone coal in ... Stone coal is widely distributed in southern provinces and autonomous region of China and Shanxi province. It is reported that the gross reserves of stone coal in these districts are estimated at 61.88 billion tons ().Vanadium is commonly founded in stone coal and the gross reserves ...

  • 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 ...

  • CN101275187A - Process for extracting vanadium by stone ...

    The invention discloses a process for using stone-like coal wet method to extract vanadium, comprising the steps of: crushing and ball-milling the stone-like coal to sieve, mix (adding additive), pickle, exchange the ions, depositing the vanadium and calcine to produce the product of vanadic oxide, the comprehensive recovery rate is larger than 80%; compared with current process, the leaching ...

  • extracting vanadium from stone - matiya.co.za

    New technologyvanadium extraction--Laohekou Lvhua ... It is a high-tech enterprise engaged in extracting vanadium from stone coal, purifying industrial flue gas, and in offering other services. The company has eleven... >> Get Quotation

  • Extraction of vanadium from stone coal by modified salt ...

    Dec 02, 2011  Extracting vanadium from stone-coal by oxygen 3.6 Effect of leaching temperature on vanadium pressure acid leaching and solvent extraction [J]. Transactions of leaching percent Nonferrous Metals Society of China, 2010, 20(s1): S118−S122. Figure 6 shows the relationship of the leaching [2] XU Guo-zhen, CHEN Bo-zhen, LI Jing, GUO Xiang-gui, YI ...

  • Extracting vanadium from stone-coal by oxygen pressure ...

    for extracting vanadium from stone-coal. The present work focuses on the design of a new technology on vanadium extraction from stone-coal by oxygen pressure acid leaching and solvent extraction. The aim of this work is to research and develop a new

  • EP2572006A1 - Method for the extraction and recovery of ...

    A method (10) for the extraction and recovery of vanadium from its ores, the method (10) characterised by the steps of: (i) Acid leaching (12) of an ore containing vanadium and iron to extract vanadium and iron into solution; (ii) Passing the product (78) of the leach step (i) to a solid/liquid separation step (80); (iii) Passing the liquid product (82) of separation step (ii) to a solvent ...

  • 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 ...

  • Extraction of Vanadium from Stone Coal by Microwave ...

    Due to the rapid growth in demand for vanadium products, extraction of vanadium from stone coal has attracted increasing attention. The traditional process for vanadium extraction from stone coal is roasting with sodium chloride.1 However, the released exhaust gas containing Cl2 and HCl is a serious threat to the environment.

  • A Novel Technology of Vanadium Extraction from Stone Coal ...

    The total recovery of vanadium reached 76.3%, which was higher than the current applied technology. The novel technology was environmentally-friendly and could extract vanadium from the stone coal, in which the content of V 2 O 5 was less than 0.8%.

  • Extraction of vanadium from stone coal by modified salt ...

    In order to reduce the pollution of Cl2 and HCl released during extracting vanadium from stone coal by sodium chloride roasting, a modified salt-roasting process was proposed by adding calcined lime in roasting process followed by H2SO4 leaching. The effects of parameters including roasting temperature, roasting time, addition mass ratio of NaCl, calcined lime upon leaching rate of vanadium ...

  • CN101760651A - Process for extracting vanadium by acid ...

    The invention provides a process for extracting vanadium by acid leaching of stone coal. The process mainly comprises the following steps of: removing aluminum from crystal aluminum sulfate ammonium vanadium obtained from acid leaching solution of stone coal, performing selective oxidation and adjustment of a pH value of the solution obtained after the aluminum removal to remove iron ...

  • CN101597698A - A kind of method for extracting vanadium by ...

    The present invention is a kind of method for extracting vanadium by stone coal through acid leaching, and technological process mainly comprises: bone coal pickling liquor crystalline sulfuric acid aluminium ammonium alum, after the crystallization in liquid neutralization or the oxidation and precipitation, precipitation slag alkali soak or sodium-salt calcination after water logging, soak ...

  • Efficient extracting vanadium from stone coal by co ...

    Izvorni znanstveni članak Efficient extracting vanadium from stone coal by co-roasting with sodium chloride and biomass. G. Q. Liu; School of civil engineering, University of science and technology, Liaoning, AnShan, China K. Liu; School of civil engineering, University of science and technology, Liaoning, AnShan, China C. Y. Tang; School of civil engineering, University of science and ...

  • CN101597698A - A kind of method for extracting vanadium by ...

    The present invention is a kind of method for extracting vanadium by stone coal through acid leaching, and technological process mainly comprises: bone coal pickling liquor crystalline sulfuric acid aluminium ammonium alum, after the crystallization in liquid neutralization or the oxidation and precipitation, precipitation slag alkali soak or sodium-salt calcination after water logging, soak ...

  • Extraction of Vanadium from Stone Coal by Microwave ...

    Due to the rapid growth in demand for vanadium products, extraction of vanadium from stone coal has attracted increasing attention. The traditional process for vanadium extraction from stone coal is roasting with sodium chloride.1 However, the released exhaust gas containing Cl2 and HCl is a serious threat to the environment.

  • 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.

  • Extraction of vanadium from stone coal by modified salt ...

    In order to reduce the pollution of Cl2 and HCl released during extracting vanadium from stone coal by sodium chloride roasting, a modified salt-roasting process was proposed by adding calcined lime in roasting process followed by H2SO4 leaching. The effects of parameters including roasting temperature, roasting time, addition mass ratio of NaCl, calcined lime upon leaching rate of vanadium ...

  • US9702025B2 - Method for the extraction and recovery of ...

    A method ( 10 ) for the extraction and recovery of vanadium from its ores, the method ( 10 ) characterised by the steps of: (i) Acid leaching ( 12 ) of an ore containing vanadium and iron to extract vanadium and iron into solution; (ii) Passing the product ( 78 ) of the leach step (i) to a solid/liquid separation step ( 80 ); (iii) Passing the liquid product ( 82 ) of separation step (ii) to a ...

  • 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 ...

  • 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 ...

  • 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].

  • Efficient extracting vanadium from stone coal by co ...

    Izvorni znanstveni članak Efficient extracting vanadium from stone coal by co-roasting with sodium chloride and biomass. G. Q. Liu; School of civil engineering, University of science and technology, Liaoning, AnShan, China K. Liu; School of civil engineering, University of science and technology, Liaoning, AnShan, China C. Y. Tang; School of civil engineering, University of science and ...

  • Extraction of vanadium from stone coal by modified salt ...

    More than 87% vanadium existing in stone coal, is widely deposited around the Southern China [1]. With the rapid growth of vanadium products demand, the study on extraction of V2O5 from stone coal attracted more and more attentions. The traditional vanadium extraction technique from stone coal is roasting with a source of sodium chloride

  • 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 ...

  • 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.

  • NEW PROCESS OF EXTRACTING VANADIUM FROM

    Vanadium, as one of the important rare elements, has been widely used in industrial production. The raw material for industrial production of vanadium consists of vanadium-titanium magnetite, oil ash, waste vanadium catalyst, bauxite and stone coal. In addition, 75% to 85% vanadium production was extracted from vanadium-titanium

  • 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.