Efficient extracting vanadium from stone coal by co ...
The optimal roasting conditions were determined when 30 % biomass was added into stone coal, roasting at about 820 °C for 2 hours with 6 % sodium chloride. Under the optimal condition the vanadium leaching rate was 44,6 %. Keywords. vanadium. extraction.
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Roast Experiment Research of Vanadium Stone Coal | MRS ...
Dong, J.H., Yang, Z.L. and Feng, J.V., Study on extracting pure vanadium pentoxide (V 2 O 5) from the stone coal vanadium ore. Journal of Xi'an Institute of Metallurgy & Construction Engineering 25 (1), 105 – 110 (1993).Google Scholar
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Recovery of vanadium from acid leaching solutions of spent ...
Selective separation and extraction of vanadium (IV) and manganese (II) from Co-leaching solution of roasted stone coal and pyrolusite via solvent extraction Ind. Eng. Chem. Res., 52 ( 38 ) ( 2013 ), pp. 13768 - 13776
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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
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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 …
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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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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. Under …
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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
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Selective Leaching of Vanadium from Roasted Stone Coal by ...
A novel staged leaching process has been reported in this paper to selectively extract vanadium from roasted stone coal and the mechanisms have been clarified. Results showed that the leaching efficiency of V, Al, P and Fe was 80.46%, 12.24%, 0.67% and 3.12%, respectively, under the optimum dilute sulfuric acid dephosphorization (DSAD)-two-stage pressure acid leaching (PAL) conditions.
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Extraction of Vanadium from Stone Coal by Microwave ...
10%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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The Output Analysis For Vanadium Extraction From Stone ...
The Output Analysis For Vanadium Extraction From Stone Coal In April 2021. : According to FerroAlloyNet, there are 6 companies on vanadium extraction from stone coal under normal production in April, with total output of 575 tons, down by 24.8% M-O-M.
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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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Extraction of vanadium from stone coal by roasting in a ...
Extraction of vanadium from stone coal by roasting in a fluidized bed reactor Xi Zenga, Fang Wangb, Huifeng Zhanga,c, Lijie Cuic, Jian Yua,⇑, Guangwen Xua,⇑ a State Key Laboratory of Multi-Phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China bSchool of Chemical and Environmental Engineering, China University of Mining and …
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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 ...
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Experimental Study on Ultrasonic-assisted Extraction of ...
The technology of extracting vanadium from stone coal in China: current status and future prospects [J]. Hydrometallurgy, 2011, 109 (1–2): 116–124. [3] Cheng Gongjin, Xue Xiangxin, Jiang Tao, et al. Effect of TiO 2 on the crushing strength and smelting mechanism of high-chromium vanadium–titanium magnetite pellets [J].
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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 total V 2 O 5 output of China in 2010, ...
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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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Acid leaching of vanadium from roasted residue of stone ...
The results show that after a roasting treatment at the optimum condition of 950 at 1 h, 76.88% vanadium can be leached under the experimental condition of 0.45% for 1 h with a liquid-to-solid ratio of 2 mL/g. Leaching after an oxidation roasting treatment is an efficient way to of H2SO4, 30 leach vanadium from the residue of stone coal, which ...
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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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The technology of extracting vanadium from stone coal in ...
Hence, much attention has been paid to research on extracting vanadium from stone coal. The traditional high salt roasting-water leaching (HSRWL) technique is the earliest technique applied in ...
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(PDF) 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 ...
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Separation and recovery of vanadium from a sulfuric-acid ...
extraction agent is expensive, extracting vanadium from a low-grade ore, such as stone coal, is not economical. Amine extractants are potential extractants that are able to extract vanadium from acidic,neutral, andalkalinesolutions,as wellasseparate vanadium and Mo, Co, and Ni ions thoroughly from spent catalyst leaching solution.
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Extraction of Vanadium From Acid Leaching Solution of ...
： Extraction of vanadium from acid leaching solution of stone coal by ion exchange resin was studied.The effects of various factors,such as resin type,solution flow speed and solution pH,on adsorption of vanadium were examined.The test results show that ion exchange is an excellent method for removing impurities and concentrating vanadium from acid leaching solution of stone coal.At ...
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Extracting Vanadium from Stone Coal by a Cyclic Alkaline ...
10%Vanadium, as a strategic metal, has been attractive for a variety of applications, including iron industry, catalysis, flow batteries.[1,2,3] It was reported that the reserve of vanadium (V 2 O 5 as the unit) in stone coal is more than 117.97 million tons in China.[] With such large reserves, extracting vanadium from stone coal has obtained great consideration in recent decades.
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Experiment and mechanism of vanadium extraction from stone ...
The acid curing process of vanadium extraction from stone coal was promoted significantly and the leaching rate of vanadium could be improved greatly by moisture retention treatment, which ...
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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 ...
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Raffinate recycling utilization of vanadium extraction ...
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 ...
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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
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Study on Extracting Vanadium from Coal Vanadium Ore ...
Extraction of Vanadium from Stone Coal by Roasting in The Present of Sodium Salts[J]. Mining And Metallurgical Engineering, 1994, 14(2): 49-50. [4] Bing Zhiyong. Study on Extraction of V2O5 from Vanadium Ore by Roasting and Acid Leaching Process[J].
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CN1254023A - Leaching-out method for extracting vanadium ...
The present invention discloses a leaching process for extracting vanadium from calciners of ore containing vanadium and its application in bone coal blank calcination-direct leaching vanadium-extracting process. It is mainly characterized by that the broken bone coal is calcined in vertical kiln, under the condition of 800-1100 deg.C oxidated and decarbonized, then the calciners are ...
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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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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 ...
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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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A literature review on leaching and recovery of vanadium ...
The technology of extracting vanadium from stone coal in China: history, current status and future prospects Hydrometallurgy, 109 ( 2011 ), pp. 116 - 124 Article Download PDF View Record in Scopus Google Scholar
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CN1254023A - Leaching-out method for extracting …
The present invention discloses a leaching process for extracting vanadium from calciners of ore containing vanadium and its application in bone coal blank calcination-direct leaching vanadium-extracting process. It is mainly characterized by that the broken bone coal is calcined in vertical kiln, under the condition of 800-1100 deg.C oxidated and decarbonized, then the calciners are ...
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Extracting vanadium from shale - ScienceDirect
Extracting vanadium pentoxide from stone coal is similar to extracting it from vanadium slag. In both processes, vanadium components must be converted into soluble substances. Depending on the properties of the mineral, sodium salt roasting or calcium salt roasting can be used as the roasting transformation process, while the leaching process ...
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