Extracting Vanadium From Stone

The technology of extracting vanadium from stone coal in China: History, current status and future prospects[J]. Hydrometallurgy, 2011, 109(1/2):116-124. Google Scholar [6] . —[J]., 2015, 34(4):275-278.XING X Y. Low-temperature alkaline roasting of stone coal vanadium ...

Wang M.Y. et al., Effect of vanadium occurrence state on the choice of extracting vanadium technology from stone coal 113 and the chemical composition of stone coal was listed in Table 1. It is ...

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 vanadium extraction from stone coal. This technique was widely adopted by small-scale factories for extracting vanadium from stone coal, but much caustic ...

New extractant and an extractant system are attractive for liquid-liquid extraction. To improve the extraction efficiency and selectivity, the binary extractant system consisting of bis-2-ethylhexyl phosphoric acid (D2EHPA) and 2-ethylhexylphosphonic mono-2-ethylhexyl (PC88A) was explored to separate vanadium (V) via synergism from multi-element sulphuric acid …

The nature of stone coal and the occurrence state of vanadium in stone coal were determined. The technical details of the representative techniques of vanadium extraction from stone coal were summarized. The newly developed technique, the low salt roasting-cyclic oxidation (LSRCO) technique, was elucidated in details. The development of the technology of …

However, the leaching conditions of these two processes for extracting vanadium from stone coal in different regions are different. Especially, the leaching conditions of each process vary for region-different stone coals. It is widely known that the process chosen is closely related to the material itself. However, the characteristics of stone ...

large reserves, extracting vanadium from stone coal has obtained great consideration in recent decades. 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]

DOI: 10.1016/J.FUEL.2014.10.068 Corpus ID: 94010749; Extraction of vanadium from stone coal by roasting in a fluidized bed reactor @article{Zeng2015ExtractionOV, title={Extraction of vanadium from stone coal by roasting in a fluidized bed reactor}, author={Xi Zeng and Fang Wang and Huifeng Zhang and Lijie Cui and Jian Yu and Guangwen Xu}, journal={Fuel}, year={2015}, …

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. Application of the process in industry is expected to make an important impact on the extraction of vanadium ...

Due to the poor vanadium recovery of mineral processing, the extraction of vanadium from stone coal is directly carried out by metallurgical processes. Salt process, acid process and alkali process three types of stone …

Therefore, developing feasible methods of extracting vanadium from stone coal is of practical significance to satisfy the growing global demand of vanadium [6], [7]. Vanadium-bearing stone coal is a kind of low-quality anthracite, of which the vanadium content is usually lower than 1% [5], [8]. The mineral composition of stone coal is complex ...

The key point of extracting vanadium from stone coal is breaking the crystal structure of muscovite and oxidize vanadium from V(III) to V(Ⅳ) or V(Ⅴ) [11].Extracting vanadium from stone coal by conventional methods such as flotation [8], [12], [13], magnetic separation [14] and gravity separation [15], [16], [17], is extremely inefficient.In order to improve vanadium …

This paper reports on continuous testing of a process for the recovery of vanadium from a H 2 SO 4-HF solution, generated from the leaching of stone coal, by solvent extraction using a D2EHPA/TBP mixture as the extractant. Three unit processes are included: fully continuous countercurrent solvent extraction and stripping; oxidation and precipitation; and …

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 …

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 ...

Extraction of vanadium from stone coal by roasting in a fluidized bed reactor [J]. Fuel, 2015, 142: 180âˆ'188. [24] DU Guang-chao, FAN Chuan-lin, YANG Hai-tao, ZHU Qing-shan. Selective extraction of vanadium from pre- oxidized vanadium slag by carbochlorination in fluidized bed reactor [J]. Journal of Cleaner Production, 2019, 237: 117765. [25]

It is very difficult to extract vanadium from stone coal. A new process for extracting vanadium from stone coal with sulfuric acid using sodium nitrate as leaching aid is proposed and studied. The … Expand

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 …

Due to the poor vanadium recovery of mineral processing, the extraction of vanadium from stone coal is directly carried out by metallurgical processes. Salt process, acid process and alkali process three types of stone coal leaching including nine technologies are introduced. However, all of these nine leaching technologies have serious ...

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 ...

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 ...

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 ...

Vanadium extraction from stone coal using a novel two-stage roasting technology Fuel (Lond.), 321 ( 2022 ), Article 124031, 10.1016/j.fuel.2022.124031 View PDF View article View in Scopus Google Scholar

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 ...

In order to reduce the discharge of exhaust gasses and lower the energy consumption to the utmost extent in vanadium extraction, some researchers have been …

Our findings advance the understanding of bioleaching by aerobic heterotrophic microbial consortium and offer a promising technique for vanadium extraction from low-grade …

PDF | On Jan 1, 2020, published Study on Extracting Vanadium from Stone Coal by Acid Leaching with Aid of Sodium Nitrate | Find, read and cite all the research you need on ResearchGate

The vanadium occurrence in stone coal, water leaching, and acid leaching residue was investigated by energy dispersive spectrometer (EDS) mapping and point analysis, and the vanadium transitions during roasting-leaching of stone coal were revealed. In the roasting process, vanadium-bearing muscovite is converted to K-Na-feldspar, accompanying the …

In order to improve leaching efficiency of vanadium pentoxide (V 2 O 5) from stone coal and to reduce its connected environmental pollution, this article investigated the oxidizing …

The mechanisms of aid-leaching reagent calcium fluoride in the extracting vanadium processes were researched by comparing the blank extraction with the extraction with calcium fluoride as aid-leaching reagent. The leaching experiments were carried out under the conditions of 95 °C, 6 h, 1.5 ml·g−1, 15 vol % H2SO4, and 5 % calcium fluoride (mass ratio of …