Extracting Vanadium From Stone

01-09-2011· 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, concentrate, and there is no one all-purpose …

01-05-2010· 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.

Overall, the industry of vanadium extraction from stone coal is still underdeveloped in China now and much intensive research work is needed for the economic exploitation of stone coal at large...

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,...

Chemical precipitation, ion exchange and solvent extraction all can be used to extract vanadium from stone coal leach solutions. Due to the low extraction of vanadium, Chemical precipitation method...

01-04-2008· The extraction technology of vanadium from stone coal by means of no-salt-roasting and dilute acid solution leaching treatment has the advantages of low pollution, low investment, as well as high vanadium leaching efficiency, which makes it the best technology for extending application.

The invention discloses a method for extracting vanadium from stone coal pickle liquor. The technical process mainly comprises the steps of extracting the stone coal pickle liquor subjected to aluminum removal through an acidic phosphate ester extracting agent solvent to remove ferric iron, enriching the vanadium through the acidic phosphate ester extracting agent solvent after the iron is ...

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 present invention relates to a process for extracting vanadic anhydride from a stone coal and its special-purpose equipments. By utilizing ebullated bed conversion type acid dip extraction vanadium abstraction process, the present invention improves extraction yield of vanadium and quality of vanadic anhydride, and at the same time, actively controls three wastes, effectively promotes ...

The invention particularly relates to a method for extracting vanadium from stone coal containing vanadium According to the technical scheme, the method comprises the steps of firstly, smashing the stone coal containing the vanadium until the grain size is smaller than 3mm, heating the stone coal up to 700-900 DEG C, conducting temperature-constant and blank roasting for 1-2 hours, cooling ...

The invention discloses a method for extracting vanadium from stone coal pickle liquor. The technical process mainly comprises the steps of extracting the stone coal pickle liquor subjected to aluminum removal through an acidic phosphate ester extracting agent solvent to remove ferric iron, enriching the vanadium through the acidic phosphate ester extracting agent solvent after the iron is ...

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 ...

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

minerals Article Vanadium Transitions during Roasting-Leaching Process of Vanadium Extraction from Stone Coal Yunliang Zhao 1,* ID, Licai Chen 1, Hao Yi 1, Yimin Zhang 2,*, Shaoxian Song 1 and Shenxu Bao 1 1 School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, China; [email protected] (L.C.); [email protected] (H.Y.);

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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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 ...

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 (III) (trivalent vanadium) and V (IV) (quadrivalent va-

This paper mainly summarizes the vanadium leaching process from bone coal, steel slag containing vanadium, catalystcontaining vanadium, including their leaching condition , application circs and these materials’ respective merits and faults under production process. bone coal and steel slag containing vanadium are the usual raw materials and the extracting of vanadium are divided into full ...

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.

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.

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 ...

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 …

www.ferroalloynet.com: 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.

In this paper, biomass was selected to replace coal as additives during vana dium extraction. Roasting experiments were performed to characterize the effects of biomass on extracting vanadium of stone coal. The results indicated that...

Extracting vanadium from stone-coal by oxygen pressure acid leaching and solvent extraction DENG Zhi-gan(邓志敢), WEI Chang(魏 昶), FAN Gang(樊 刚), LI Min-ting(李旻廷), LI Cun-xiong(李存兄), LI Xing-bin(李兴彬) Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China Received 6 July 2009; accepted 30 December 2009 ...

The vanadium leaching percentage of these methods is high, but the operations are high costs or high water pollution for treating stone coal. A productive process of V2O5 from stone coal was proposed in 1996, which included grinding, two-step counter-current sulfuric acid leaching, solvent extraction, precipitation and pyrolysis [6].

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Considering that extracting V2O5 from coal-stone by "roasting-alkali leaching " process exist some serious problems such as abundant alkali consumption,long leaching time and leaching solution with high impurity content and so on,the experiment of extracting V2O5 from stone coal calcine by pressure alkaline leaching was investigated,and effects of dosage of sodium hydroxide,liquid-solid ratio ...

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.