extracting vanadium from stone

Kinetics of Extracting Vanadium From Stonecoal by Alkali

Vanadium was leached from roasted stone coal by NaOH solution and the effect of leaching temperature leaching time addition of NaOH liquid to solid ratio the grinding fineness of stone coal and stirring speed on the vanadium leaching rate was studied The kinetics analysis for the process is presented by the shrinking core model...

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A new process of extracting vanadium from stone coal

Jul 28 2010 0183 32 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 impuriti However the leaching rate...

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Extraction and Precipitation

the extraction and recovery of vanadium was studied Vanadium IV was selectively extracted using a mixture of 10 v/v di 2-ethylhexyl phosphoric acid and 5 v/v tri-n-butylphosphate in sulfonated kerosene Using six extraction and five stripping stages the extraction efficiency for vanadium was 967 and the stripping efficiency was...

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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 chloride1 However the released exhaust gas containing Cl2 and HCl is a serious threat to the environment...

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Study on extraction of vanadium from high acid leach

Abstract 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...

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Bioleaching of vanadium from barren stone coal and its

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 4892wt of the vanadium was extracted through...

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Separation and recovery of vanadium from a sulfuric

arate vanadium and impurities as Fe Al Mg K Ca P and Si from a leaching solution generated by the sulfuric-acid leaching of vanadium-containing stone coal Variations in aqueous pH exhibited good extraction of vanadium at an equilibrium pH of 16 Vanadium was successfully extracted by a three-...

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Vanadinite

Vanadinite is a mineral belonging to the apatite group of phosphates with the chemical formula Pb 5 V O 4 3 ClIt is one of the main industrial ores of the metal vanadium and a minor source of leadA dense brittle mineral it is usually found in the form of red hexagonal crystalsIt is an uncommon mineral formed by the oxidation of lead ore deposits such as galena...

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Extraction of vanadium from sulfuric acid leaching

Vanadium-bearing stone coal is an important vanadium resource in China hence vanadium extraction from stone coal is paid more attention to in this country At present acid leaching with H 2 SO 4 have been widely adopted for vanadium leaching from stone coal due to the merits of high...

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Selective recovery of vanadium and scandium by ion

More than 99 of vanadium was selectively adsorbed from the hydrochloric acid leaching solution under the conditions of pH value of 18 volume ratio of leaching solution to resin of 10 and flow rate of 333 mL/min Maximum extraction and separation of scandium was observed from the acid leaching solution at an aqueous pH value of 02...

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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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Extracting vanadium from stone

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...

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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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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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US9702025B2

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...

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Recovery of vanadium from alkaline leaching solution from

vanadium recovery was 909 KEYWORDS vanadium pentoxide purification extraction INTRODUCTION The classical technology for extracting vanadium from stone coal has two main problems low vanadium recovery...

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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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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...

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CN101476036B

The invention provides a method of leaching vanadium by adding sulfuric acid to stone coal wet-stacking oxidizing and converting under the normal temperature and pressure The method comprses the following steps 1 dry-grinding bone coal into bone coal powder with a diameter of 1-5mm 2 adding sulfuric acid and water with a mass ratio of bone coal powder sulfuric acid water of 100 10...

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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...

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Extraction of Vanadium and Synthesis of Vanadium

Maximum extraction 96 vanadium was achieved using acidified water leaching at above ambient temperature in 1 h with 200 g/L pulp density following diffusion control model Finally the vanadium rich leach liquor was purified by steps of adsorption/precipitation etc to remove with iron and silica to get vanadium pentaoxide A high...

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Extracting vanadium from stone

May 01 2010 0183 32 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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Adsorption of Vanadium IV on the Synthesized D2EHPA

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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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...

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