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Extracting vanadium from stone-coal by oxygen

2010-5-1  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 technology of extracting vanadium from stone

2011-9-1  In addition to these techniques introduced above, other techniques for extracting vanadium from stone coal, such as low temperature sulfating roasting-acid leaching (Liu et al., 2009), microwave-aided roasting (Du et al., 2010, Ouyang et al., 2008), and ultrasonic-aided acid leaching (Shi et al., 2007) were also proposed, but they remain at the laboratory stage and are not mature enough for industrial

Extracting Vanadium from Stone Coal by a Cyclic

2017-1-3  Generally, there are two methods to extract vanadium from stone coal: acid leaching and alkaline leaching. At present, the studies about vanadium extraction from stone coal are mostly concentrated on the acid leaching method. [ 5] The acid treatment attracts attentions largely due to the low cost of acid. [ 6]

A new process of extracting vanadium from stone coal

2010-7-28  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.

Extraction of vanadium from stone coal by roasting in

2015-2-15  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), and then precipitating and separating V(IV) from the

Extracting vanadium from stone-coal by oxygen pressure

2012-10-23  Stone-coal carbonaceousshale containsvanadium[48]. grossreserve morethan 87% domesticreserve vanadium[910].Conventionally, vanadiumfrom black shale performedusing

(PDF) Extraction of vanadium from stone coal by low

The vanadium in stone coal containing 0.65% of V2O5 was extracted by low temperature Find, read and cite all the research you need on ResearchGate Article PDF Available

Mechanism of Enhancing Extraction of Vanadium

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 [

Extraction of vanadium from stone coal by modified

2011-12-2  In order to reduce the pollution of Cl 2 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 H 2 SO 4 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 the leach solution of

2009-7-1  The industrial test indicates that application of the resin process in the extraction of vanadium from stone coal is feasible. The loading of V on the resin can be reached 280 mg/mL wet resin with an overall recovery of 98.6% vanadium.

Extracting vanadium from stone-coal by oxygen pressure

2010-7-6  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)

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, 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

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, 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

Technology of Extracting Vanadium and Removing

The process of extracting vanadium from the stone-coal oxygen pressure acid-leaching solution was researched.Some parameters of extraction and anti-extraction,such as organic phase to aqueous phase,the composition of solvent,pH and the defecation time,were optimized by a series of tests.The results showed that the extraction efficiency could be up to 95% under the conditions of 6-stage

extracting vanadium from stone bistro-zuid

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 [

某伊利石型含钒石煤矿石复合添加剂焙烧—联合浸出提钒

Key words: Vanadium extracting from stone coal, Composite additive, Water leaching, Acid leaching 引用本文 张成强, 孙传尧, 印万忠, 景高贵. 某伊利石型含钒石煤矿石复合添加剂焙烧—联合浸出提钒工艺研究[J]. 金属矿山, 2018, 47(10): 92-97

NEW PROCESS OF EXTRACTING VANADIUM FROM

2013-4-9  that in the new process, vanadium in the roasted slag exists mainly in the form of water-soluble sodium vanadate and the vanadium water leaching efficiency can reach to 80%, which can meet the requirement of industrial production. References 1. Y.Zhang, S.Bao, T.Liu, ^The Technology of Extracting Vanadium from Stone Coal in China: History,

石煤清洁焙烧提钒工艺研究-Study on clean-roasting

Study on clean-roasting technology of extracting vanadium from stone coal Gao Feng 1,Hua Jun 2,Yan Wenbin 1,Cai Jun 1,Shi Meilian 1 (1.College of Chemistry and Chemical Engineering, Jishou University;2.College of Chemistry and Chemical Engineering,Jishou University,Jishou Hunan,416000)

Recovery of vanadium from alkaline leaching solution

2020-10-29  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

Flotation recovery of vanadium from low-grade stone coal

2014-5-6  extracting process is an effective method to raise the grade of metal and further reduce production cost. ZHAO et al [12] used gravity separation to pre-concentrate vanadium from stone coal. Even though only 9.7% vanadium was lost by this method, the yield of tailing was low and only accounted for 28.9% of the feed ore.

Extracting vanadium from stone-coal by oxygen pressure

2010-7-6  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)

NEW PROCESS OF EXTRACTING VANADIUM FROM

2013-4-9  that in the new process, vanadium in the roasted slag exists mainly in the form of water-soluble sodium vanadate and the vanadium water leaching efficiency can reach to 80%, which can meet the requirement of industrial production. References 1. Y.Zhang, S.Bao, T.Liu, ^The Technology of Extracting Vanadium from Stone Coal in China: History,

某伊利石型含钒石煤矿石复合添加剂焙烧—联合浸出提钒

Key words: Vanadium extracting from stone coal, Composite additive, Water leaching, Acid leaching 引用本文 张成强, 孙传尧, 印万忠, 景高贵. 某伊利石型含钒石煤矿石复合添加剂焙烧—联合浸出提钒工艺研究[J]. 金属矿山, 2018, 47(10): 92-97

石煤清洁焙烧提钒工艺研究-Study on clean-roasting

Study on clean-roasting technology of extracting vanadium from stone coal Gao Feng 1,Hua Jun 2,Yan Wenbin 1,Cai Jun 1,Shi Meilian 1 (1.College of Chemistry and Chemical Engineering, Jishou University;2.College of Chemistry and Chemical Engineering,Jishou University,Jishou Hunan,416000)

Study on Extraction of Vanadium from High Acid

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

Bioleaching of vanadium from barren stone coal and

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 48.92wt% of the vanadium was extracted through

CN1896006A Extraction of vanadium from stone

A method for extracting vanadium from bone coal and controlling pollution combined with ceramic production is carried out by taking vanadium-contained bone coal as fuel and raw material, break grinding, roasting, diffusing to obtain vanadium-contained brining, utilizing waste gas from roasting process as heat source for generation and ceramic spraying dry tower, clean discharging by dust

Recovery of vanadium from alkaline leaching solution

2020-10-29  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

Flotation recovery of vanadium from low-grade stone coal

2014-5-6  extracting process is an effective method to raise the grade of metal and further reduce production cost. ZHAO et al [12] used gravity separation to pre-concentrate vanadium from stone coal. Even though only 9.7% vanadium was lost by this method, the yield of tailing was low and only accounted for 28.9% of the feed ore.

被SCI检索的论文-冶金与能源工程学院

2014-10-11  Extracting vanadium from stone-coal by oxygen pressure acid leaching and solvent extraction[J]. Transactions of Nonferrous Metals Society of China, 2010, 20: 118-122. [144] Cunxiong Li, Chang Wei, Zhigan Deng, Minting Li, Xingbin Li, Gang Fan