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extracting vanadium from stone

For extracting vanadium from stone coal, it is necessary to break down the crystal structure of vanadium-bearing minerals. The traditional technology includes chloridizing roasting and water leaching processes, whereas the low vanadium recovery and the serious environment pollution make this technique limited [ 9, .

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 ...

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 ...

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

Vanadium extraction from stone-coal was investigated by oxygen pressure acid leaching and solvent extraction. The mineralogy of the stone-coal from Tongren City of Guizhou Province, China, was investigated by various determination methods. The effects of leaching time, leaching temperature, leaching agent concentration, leaching L/S ratio ...

Separation and adsorption of V(V) from vanadium-containing ...

 · 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 ...

CN101597698A

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 ...

 · Roasting experiments were performed to characterize the effects of biomass on extracting vanadium of stone coal. The results indicated that kalium in biomass catalyzed the formation of potash feldspar but inhibited the generation of insoluble anorthite selectively, and effectively improved the vanadium leaching rate.

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].

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.

Optimization of Oxidative Leaching for Vanadium Extraction ...

Vanadium (V) is commonly used in the production of alloy steels, catalytic agents, and vanadium batteries. The recovery of vanadium by leaching from stone coal, vanadium titano-magnetite, and waste catalyst has been widely studied [].Stone coal is a unique and abundant V resource in China with an estimated reserve of approximately 61.88 billion tons.

Production Of Vanadium Extraction From Stone Coal In The ...

Production Of Vanadium Extraction From Stone Coal In The First Three Quarters Of 2019. : 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 ...

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 ...

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 …

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 …

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 ...

 · Besides, the ore containing vanadium in stone coal is always complicatedly combined with carbon, which further increases the difficulty for extracting vanadium form stone coal. China has started to extract vanadium from stone coal since 1960s, whose fundamental principle is oxidizing the acid- and water-insoluble V(III) to V(IV) and/or V(V ...

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.

Experimental Study on Extraction of Vanadium from Stone ...

Experimental Study on Extraction of Vanadium from Stone Coal by Microwave Pretreatment. Article Preview. Abstract: 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 ...

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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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 ...

Pre-Concentration of Vanadium from Stone Coal by Gravity ...

In China, stone coal is a vanadium resource with huge reserves. The gross reserve of vanadium in terms of V 2 O 5 in stone coal is 118 million tons, which accounts for more than 87% of the domestic reserve of vanadium [1,2].Therefore, many techniques of vanadium extraction from stone coal have been researched and developed by various researchers [3,4].

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 ...

CN101275187A

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 ...

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

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

 · 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.

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

 · Extractingvanadium from stone-coal oxygenpressure acid leaching solventextraction DENG Zhi-gan(), WEI Chang( FANGang( LIMin-ting(), LI Cun-xiong(), LI Xing-bin() Faculty EnergyEngineering, Kunming University Technology,Kunming 650093, China Received July2009; accepted 30 December 2009 Abstract: Vanadium extraction from stone-coal …

CN101230419A

The invention discloses a method of extracting vanadic oxide from stone coal and clinker which contain vanadium and a method of synthetically extracting tschermigite and gulf red. The invention relates to an extraction method of vanadium and a method which can be used for synthetically recycling aluminum and iron. The steps of the invention include decarburization in the way of direct baking ...

Por Le Manuel Extraction Machine For Gold Ore

Por Le Gold Extraction Machine Portable Manuel Extraction Machine For Gold Ore. Stryker174GS 4000HDis a high quality made here in the USA flail impact gold mill and can process and crush up to 23 tons of rock a day, Perfect for the small gold mining operation.Extracting Gold From Gold Ores. gold ores process machine to extract gold Jan 23 2018 The Haber Gold Process HGP4 ResearchGate …

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

Extracting vanadium from stone-coal by oxygen pressure acid leaching and solvent extraction [J]. Transactions of Nonferrous Metals Society of China, 2010, 20(s1): S118−S122.

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.

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 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 …

CN100359025C

The present invention provides a method for extracting vanadium pentoxide from stone coal vanadium ore, which comprises five procedures of calcining for calcification, extracting in diluted acid, purifying vanadium solution, ion exchange and pyrogenation for removing ammonia. The method has the characteristics of low waste gas pollution, high yield of vanadium, low consumption, low energy ...

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 ...