A H2SO4–H2O2 system was developed to enhance the efficacy of vanadium extraction from roasted vanadium steel slag. The optimum parameters and the behavior of vanadium extraction were investigated systematically. When 1 mL of H2O2 per gram of vanadium slag was added to a leaching mixture at 50 °C, along with 30% H2SO4, 80.5% of …
The solvent extraction of vanadium has been widely studied in inorganic acid systems; but less in organic acid systems. In this study, the separation and recovery of vanadium and aluminum from oxalic acid leachate of shale by solvent extraction with Aliquat 336 was investigated. The results indicated that 99.06% of vanadium was …
The recovery of vanadium by zeolite–resin magnetic nanocomposites from industrial Bayer liquor was studied in this paper. The magnetic nanocomposite was fabricated by synthesizing Fe3O4 nanoparticles and adding zeolite and amberlite IRA-400. Different techniques such as X-ray diffraction, Fourier transform infrared spectroscopy, …
A complete DBT removal from the model fuel can be achieved within 30 min at 45 °C using 4.5 g 40-K-PV 2 @APTES–MGO catalyst per L of fuel, and a molar ratio of H 2 O 2 /DBT = 7. After each ECODS run, catalyst separation and recovery were performed by simply utilizing an external magnetic field without noticeable mass loss.
Vanadium minimally existed as at pH 2.0, and the functional groups NH and C–N contributed to vanadium extraction using the extractant 7101. Four stages extraction and three stages of re ...
DOI: 10.1016/j.hydromet.2024.106313 Corpus ID: 269255566; Review of leaching, separation and recovery of vanadium from roasted products of vanadium slag @article{Li2024ReviewOL, title={Review of leaching, separation and recovery of vanadium from roasted products of vanadium slag}, author={Changqing Li and Tao …
ABSTRACT. A co-recovery process used to extract iron, chromium, and vanadium in the form of chromium–vanadium-bearing metallic iron from vanadium tailings via a semi-molten reduction-magnetic separation method was investigated.
The influence of roasting on the leaching rate and valence of vanadium was evaluated during vanadium extraction from stone coal. Vanadium in stone coal is hard to be …
DOI: 10.1038/s41467-024-46958-6 Corpus ID: 268666358; A molecular extraction process for vanadium based on tandem selective complexation and precipitation @article{Osin2024AME, title={A molecular extraction process for vanadium based on tandem selective complexation and precipitation}, author={Oluwatomiwa A. Osin and …
The prevailing method for extracting vanadium from vanadium slag, illustrated in Fig. 1, involves a sequence of steps: roasting, leaching and vanadium precipitation, culminating in the production of vanadium oxide (An et al., 2023).During the vanadium slag roasting process, the formation of vanadium-rich phases exhibited …
of 86% of vanadium was achieved after optimizing the parameters. The experimental result illustrated the adsorption of vanadium on magnetite–zeolite–resin nanocomposite following the pseudo-second-order model which indicates chemical reaction between the vanadium anions and the adsorbent or a combination with diusion controls the process.
Vanadium-bearing (V-bearing) shale is an established vanadium resource. In China, it accounts for over 87% of the country's total vanadium reserve. Meanwhile, vanadium-bearing shales generally contain less than 1% V 2 O 5 – considered a complex low-grade mineral- which makes extraction of vanadium from the shale rather complex and ...
A new process for vanadium recovery from stone coal by roasting–flotation was investigated based on the mineralogy. The process comprised four key steps: …
vanadium. Results revealed that V5+ and Cr6+ could be e-ciently separated with a separation coecient of 362.05 at pH = 3.5 and the V/Cr ratio of 1:1 (Wu et al. 2019). The melamine was also acted as an ecient absorbent to separate vanadium and chromium in the leaching solution (Peng et al. 2020, Peng et al., 2019a). Despite these previous …
A major source of vanadium recovery and also the raw material of this research is the vanadium-bearing (V-bearing) shale. The main purpose of the study is to capture the difference between the ultrasonic-assisted and regular leaching of vanadium from roasted V-bearing shale, having a V 2 O 5 grade of 0.96%. In this work, the effects …
Test the efficiency of ion exchange resins for vanadium (V) removal and recovery from bauxite residue leachates at alkaline pH (11.5 and 13) and found the rate kinetics was consistent with the pseudo-first-order kinetic model, with a higher adsorption rate for pH 11.5. Expand
DOI: 10.1016/j.cej.2023.141286 Corpus ID: 255672190; Enhance selective separation of vanadium and iron from acid-leaching solution with sulfamic acid modified resin @article{Tan2023EnhanceSS, title={Enhance selective separation of vanadium and iron from acid-leaching solution with sulfamic acid modified resin}, author={Liping Tan and …
The vanadium battery has received great attention in recent years as one of the most viable energy-storage technologies for large-scale applications. As an important part of the vanadium battery, the vanadium electrolyte occupies most of the cost of the vanadium battery. How to prepare a vanadium electrolyte at a low cost has become a …
Cleaner production (CP) by a data mining process for vanadium extraction by a leaching process (the reagent was weak HCl) was established (Li et al., 2017a). The CP management assessment route involves various steps, such as modeling, an acid leaching process, data collection, and CP model establishment (Li et al., 2017a).
Thus, the selective separation of chromium and vanadium is essential for ensuring the quality of the vanadium product and improving the resource utilization, environmental effect, and process economy of the vanadium-titanium industry. ... The mean free energy (E = 1 / 2 k d) could be calculated from D-R model to determine the …
A simple mathematical model is established to predict the self-discharge process in a kilowatt-class vanadium redox flow battery stack. The model uses basic mass transport theory to simulate the transfer of vanadium ions in the battery. The simulation results agree reasonably with the experimental values, confirming the validity …
A new process for vanadium recovery from stone coal by roasting–flotation was investigated based on the mineralogy. The process comprised four key steps: …
The selective separation of V from BVS was achieved in the form of Pb 5 (VO 4) 3 OH.. Maximum Vanadium extraction efficiency reached 99.09% together with V 2 O 5 purity of 99.81%.. Removal of P, As and F was enhanced by double-salts precipitation of 2Na 3 AsO 4 ·NaF·19H 2 O, Na 3 PO 4 ·NaF·19H 2 O and NaSO 4 ·NaF.. The internal circulation …
Here, we present a complexation-precipitation method to selectively recover pentavalent vanadium ions, V (V), from complex metal ion mixtures, using an acid …
Recycling vanadium from alternative sources is essential due to its expanding demand, depletion in natural sources, and environmental issues with terrestrial mining. Here, we present a complexation-precipitation method to selectively recover pentavalent vanadium ions, V(V), from complex metal ion mi …
Our results provide an insight into the complex atomic scale process of hydrogen embrittlement in vanadium-based hydrogen separation membranes. The result can also be used as a guidance of further experimental studies on the macroscopic hydrogen embrittlement phenomenon and the further development of suitable metallic …
In order to visually illustrate how the vanadium-bearing minerals were separated from system, a loose-stratification model was established with Bagnold …
Reduction roasting with sodium sulfate followed by magnetic separation was investigated to utilize vanadium tailings with total iron grade of 54.90 wt% and TiO2 content of 17.40 wt%. The results show that after reduction roasting–magnetic separation with sodium sulfate dosage of 2 wt% at roasting temperature of 1150 °C for roasting time of …
reduction followed by melting separation applying to dis-pose special metallurgical resources has attracted increasing attention.8–11) Jun et al.8) studied the carbothermal reduction-melting separation process for copper slag. In Guang et Melting Separation Process of High Chromium Vanadium-bearing
Moreover, the disruption of vanadium slag particles during this process enhanced the exposure of the vanadium-rich Phase Ⅰ, previously encased within the refractory Phases Ⅱ and Ⅲ. Extending the milling time to 40 min, as depicted in Fig. 3 (c), led to a further decrease in particle size. Consequently, the vanadium-containing phase was ...
