In this paper, the mineral properties of the two feedstocks are first reviewed, and the importance of establishing a process mineralogical database is proposed. Then, the
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· The vanadium extracting converter of a plant uses capillary bricks in the vanadium extracting process, which often results in clogging. At the same time, the strength of the bottom-blowing gas supply is generally about 0.02
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· This study developed an effective and practical process for recovering vanadium as vanadium pentoxide (V2O5) from spent refinery catalysts. It involves four stages: leaching, purification, precipitation, and calcination. Vanadium was first leached using NaOH; then, the solution was purified by precipitation. Next, vanadium was
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· Efficient vanadium extraction achieved via Fe 2 O 3 –assisted mechanochemical activation. Improved efficiency attributed to the changes in the physicochemical properties and structure. • Fe 2 O 3 facilitated ROS generation to enhance vanadium pre-oxidation. Fe 2 O 3 replaced by vanadium tailings waste without
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1) In the natural world, vanadium is found in various minerals, among which vanadium-titanium (V-Ti) magne- tite ore is the most important raw material for vanadium extraction. The current process
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The purpose of this paper is to review the research progress of vanadium extraction processes. This review summarizes and analyzes the extraction of vanadium in
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· Vanadium and chromium are important rare metals, leading to a focus on high chromium vanadium slag (HCVS) as a potential raw material to extract vanadium and chromium in China. In this work, a novel method based on selective two-stage roasting–leaching was proposed to separate and extract vanadium and chromium
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· In this study, a new vanadium extraction process from vanadium titano-magnetite(VTM) featuring calcification roasting and (NH 4) 2 C 2 O 4 solution leaching has been proposed. Compared with the traditional sodium roasting, the calcification roasting can avoid the production of waste gas and the sodium free tailings can be used for iron
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· Acid leaching process in extracting vanadium from blast furnace slag in Panzhihua vanadium titanium magnetite Chinese materials conference (2017 April 18), 10.1007/978-981-13-0158-2_33 Google Scholar [15] M. Lekobotja, M. Mojapelo, X.C. Goso, H.
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for vanadium extraction.3 As vanadium titanomagnetite is used in the steel-making process, a large amount of vanadium steel slag is produced, and the V 2 O 5 content can be enriched in the range of 12−21% according to differentsmelting processes and 4
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High-manganese containing vanadium wastewater (HMVW) is commonly produced during the vanadium extraction process from vanadium titano-magnetite. HMVW cannot be reused and discharged directly, and is harmful to the environment and affect product quality due to heavy metals in the wastewater. The wastewater is usually treated by lime
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· Process and kinetic assessment of vanadium extraction from vanadium slag using calcification roasting and sodium carbonate leaching J. Met. , 71 ( 2019 ) , pp. 4600-4607 CrossRef View in Scopus Google Scholar
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· 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,
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· Recovering vanadium from vanadium titanium-magnetite (VTM) ore using (NH4)2C2O4 is a clean hydrometallurgical process, but the drawback is the low recovery and slow kinetics due to the formation of inhibitor. A novel energy-efficient mathematical model was derived for green leaching of VTM in which the mechanical activation (MA)
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· In the present work, the oxidation characterization and mechanism of vanadium extraction by bottom injection of CO2 were investigated based on laboratory experiments and pilot tests. In addition, variations of the compositions of all stable phases including gas, hot metal, slag, and spinel during the vanadium extraction process
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· review of processing technologies for vanadium extraction from stone coal, Mineral Processing and Extractive Metallurgy, DOI: 10.1080/25726641.2018.1505207 To link to this article: https://doi.or
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:Vanadium Extraction From SlagH 2 SO 4An inductively coupled plasma (ICP) analyzer (Iris-Advangtage1000, USA) was used to determine the concentrations of metal ions (such as vanadium, manganese, and
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:Vanadium ExtractionPublish Year:2021 · These findings hold promise for addressing challenges in vanadium extraction, including V(V) depletion in natural sources and mitigating environmental and
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· Comparison of direct acid leaching process and blank roasting acid leaching process in extracting vanadium from stone coal Int. J. Miner. Process., 128 (2014), pp. 40-47, 10.1016/j.minpro.2013.12.010 View PDF View article View in Scopus Google Scholar [24]
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· In this study, it was aimed to extract vanadium (V) and nickel (Ni) from a petroleum coke ash (PCA) using a roasting process without additives, followed by leaching with sulfuric acid (H2SO4). The experiments were designed based on the Taguchi approach, taking into account the parameters of temperature, acid concentration, time, and solid
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· Although it was shown (Table 1) that the extraction ratio of vanadium from the converter slag into a sulfuric acid solution is low, following firing, it increases sharply.The studies [7, 8] present the results on the oxidation state and chemical forms of vanadium in converter slag and the products of its processing.
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· The excessive input of heavy metals such as vanadium (V) into the environment has been one of the consequences of global industrial development. Excessive exposure to V can pose a potential threat to ecological safety and human health. Due to the heterogeneous composition and reactivity of the various elements in soils and sediments,
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· This paper systematically summarizes the current vanadium extraction technology from converter vanadium slag, covering roasting, direct leaching, sub-molten salt method, and the technology and research status of vanadium extraction from stone
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· for direct extraction of vanadium [15]. In t his process, the materials are often mixed with sodium carbonate and ro asted in the presence of oxygen in the temperature range of 900 to 1200 C by
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· For the extraction of low valence, P204 is one of effective extraction agent. The lately developed technology, LTSRWL, is characterised by high recovery of vanadium, comprehensive recovery of other valuable elements and environmental friendliness, which make it become the best option.
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Zheng et al. [91] conducted a comparative experimental study on vanadium extraction by vanadium slag melting method and roasting method under laboratory conditions. The leaching rate of vanadium slag by the melting method is lower than that of the roasting method. On this basis, the melting method test is improved.
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· Vanadium slag with different MnO content were prepared by remelting-crystallization. • Effect of MnO content on the olivine phase is greater than that on the spinel phase. • Mn in vanadium slag react with V to form Mn 2 V 2 O 7 during roasting. n(CaO)/n(V 2 O 3) < 2 during calcification roasting promote the utilization of Mn.
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· The aim of this study was to investigate the phase transformation and kinetics of the solid-state reaction of CaO-V2O5, which is the predominant binary mixture involved in the vanadium recovery process. Thermal analysis, X-ray diffraction spectroscopy, scanning electron microscopy, and energy dispersive spectrometry were
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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 s
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· Therefore, the existing vanadium extraction process, which is blank roasting -leaching by acid -purification -vanadium precipitation with ammonium salt -calcinations, is complex Bao et al., 2018
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