Vanadium is a rare and refractory metal with desirable physicochemical properties, including high melting point, high hardness, and corrosion resistance 1,2.Consequently, vanadium's importance ...
DetailsThis study reported the extraction of vanadium from low-vanadium grade magnetite concentrate pellets using sodium salt. 71.1% of vanadium can be extracted under the following optimal conditions: pelletizing with 5 wt% Na 2 CO 3, preheating at 1050 °C for 10 min, roasting at 1250 °C for 10 min, and water leaching at 120 °C for 120 min …
DetailsChina is rich in titanium resources, most of which are stored in Sichuan province in the form of vanadium‑titanium magnetite ore (Du, 1996). Generally, vanadium‑titanium magnetite concentrate including Fe of 30%, TiO 2 of 10%, and V 2 O 5 of 0.3% is smelted by using blast furnaces.
DetailsVanadium improves the strength of titanium, and vanadium-titanium alloys have been used in the construction of aircraft. Alloys of vanadium, chromium and titanium also have suitable properties for the construction of nuclear reactors. ... 2019), the alkaline carbonate leaching process for uranium is also effective for vanadium …
DetailsThe blast furnace smelting process for vanadium titania-magnetite is shown in Fig. 1.The low concentration of TiO 2 with about 1.5 wt.% in the primary mineral can be enriched into titania-bearing slag with more than 20 wt.% TiO x, 29,30 as shown by the composition range in Table I; other oxides including CaO, MgO, SiO 2, and Al 2 O 3 are …
DetailsIron Steel Vanadium Titanium, 2015, 36(6): 44–50+56. Google Scholar Ding MT. Study on Vacuum Carbonization Reduction of Extraction Titanium from Titanium-bearing Blast Furnace[J]. China Resources Comprehensive Utilization, 2020, 38(1): 39–41. Google Scholar
Details1. Introduction. Vanadium is an important transition metal used in the manufacture of high strength steel alloys, vanadium redox flow batteries, and catalysts [[1], [2], [3], [4]].In particular, in modern energy storage systems, a lot of demand is expected for vanadium redox flow batteries because they are relatively stable and have a better …
DetailsIn this study, a clean pellet production method of calcium roasting and sulfuric acid leaching of vanadium from vanadium and titanium magnetite concentrates is proposed, which can effectively separate vanadium and iron, and the pellets after acid leaching and vanadium extraction can be used as raw material for iron making after …
DetailsAdditionally, about 28.5 thousand tons of vanadium relative to V2O5, found in titanium magnetite concentrates and converter slag, could be further engaged in processing. Consequently, the reserve of raw materials unused for vanadium extraction amounts to 45 thousand tons relative to V2O5. Processing these raw materials holds the …
DetailsThis paper systematically summarizes the current vanadium extraction technology from converter vanadium slag, covering roasting, direct leaching, sub-molten salt method, …
DetailsA new process of extracting titanium from vanadium–titanium magnetite (VTM) in the Panxi area in Sichuan, China is introduced in this work. Various experiments, including …
DetailsMethods of chemical analysis, XRD, and pH monitoring are adopted in order to study wet extraction of Fe, V and Ti based on activated reduction, and the control conditions as well as the degree of ...
DetailsAdditionally, 81% of V and 86% of Fe were removed from the organic phase by ammonium sulfate washing. Cao et al. used a mixture of di (2-ethylhexyl) phosphate (D 2 EHPA) and tri-n-butyl phosphate (TBP) as extractants for the extraction of titanium from vanadium slag. They found that the extraction efficiency of Sc was about 95%, and the …
DetailsMaterials. The original vanadium slag (M0) used in the experiments was collected from Pan Steel in China. Analytical reagents were added to the original vanadium slag to prepare the pre-melted vanadium slag with different MgO, MnO, and Al 2 O 3 content. The chemical compositions of the slag samples are shown in Table 1.The deionized water used in the …
DetailsFig. 2 shows the distribution of vanadium ore in the world. The world's vanadium ore reserves are about 2.4165 × 10 7 t, which represents the portion that meets requirements of current extraction and production. The reserves of vanadium in China, Russia, South Africa and Australia account for 99 % of the world's reserves, and China's vanadium ore …
DetailsAn alkali leaching-acid leaching method was proposed to extract vanadium and enrich titanium from modified Ti-bearing blast furnace slag (MTBBFS). The optimal alkali …
DetailsDOI: 10.1016/j.cjche.2021.05.035 Corpus ID: 238816716; Two-stage cyclic ammonium sulfate roasting and leaching of extracting vanadium and titanium from vanadium slag @article{Lin2021TwostageCA, title={Two-stage cyclic ammonium sulfate roasting and leaching of extracting vanadium and titanium from vanadium slag}, …
DetailsHere, we present a complexation-precipitation method to selectively recover pentavalent vanadium ions, V (V), from complex metal ion mixtures, using an acid-stable metal …
DetailsBlack shale represents a unique and strategic vanadium resource in China, accounting for ~ 90% of the nation's vanadium reserves. The complex forms of occurrence of vanadium in black shale, particularly its incorporation into aluminosilicate mica via isomorphism, render it tightly bound and challenging to extract. Against the backdrop of …
DetailsA novel method of pellet calcification roasting-H 2 SO 4 leaching was proposed to efficiently separate and extract vanadium (V) from vanadium-titanium (V-Ti) magnetite concentrates. The leaching rate of V is as high as 88.98%, while the leaching rate of impurity iron is only 1.79%.
DetailsA novel process for the recovery of iron, titanium, and vanadium from vanadium-bearing titanomagnetite: Sodium modification-direct reduction coupled process. Int. J.
DetailsThe maximum for the vanadium and titanium extraction was obtained at a mass ratio of 8:1. The respective percentages were 75.60% and 65.45% for the raw vanadium slag, with a rapid increase to 91.44% and 77.43% for the water-quenched slag. Clearly, water quenching significantly increased the extraction by 16% for vanadium …
DetailsTraditional vanadium extraction process, which involves H 2 SO 4 stripping after solvent extraction followed by ammonium vanadate precipitation, faced the issues of large amount of reagent consumption and discharge of ammonia contaminated wastewater. Hydrogen peroxide stripping and precipitation of vanadium products by heating process …
DetailsThe concentrate is classified as high-vanadium vanadium titano-magnetite concentrate, containing 51.64% iron, 12.96% titanium, and 1.52% vanadium. The extraction of vanadium from this type of VTM typically involves wet metallurgical processes to extract vanadium first, followed by pyrometallurgical processes to recover …
DetailsIn this work, diboron trioxide and calcium fluoride are applied as composite additives to explore a process suitable for processing low-grade, high-vanadium, ultra-high-titanium vanadium–titanium magnetite. The metallized coal-based direct reduction–electromagnetic separation experiment was conducted. Results show that a …
DetailsHigh-chromium vanadium-titanium magnetite is a complex multi-metal associated resource, which contains metal elements such as iron, vanadium, titanium, and chromium, and has a high comprehensive utilization value [1–3]. High-chromium vanadium-titanium magnetite is also a type of unmanageable ore [4,5], which contains …
DetailsIn the natural world, vanadium is found in various minerals, among which vanadium-titanium (V-Ti) magnetite is the most important raw material for vanadium extraction, 98% of the proved vanadium reserves are found in vanadium-titanium magnetite. More than 90% of China's vanadium-titanium magnetite is concentrated in …
DetailsIn this paper, a novel K2SO4/KCl composite roasting additive was used to extract vanadium from vanadium–titanium magnetite concentrate. Further, the mechanism of K2SO4/KCl for extracting vanadium was … Expand
DetailsThe single-stage extraction efficiency of vanadium exceeded 85% at a pH of 8.0‒9.0 and an organic-to-aqueous phase ratio of 1:1. The thermodynamics of the vanadium …
DetailsThe extraction of vanadium and titanium were 91% and 77%, respectively, after roasting at an AS-to-vanadium slag mass ratio of 4:1 and 370 °C followed by leaching in a 6% H2SO4 solution. X-ray ...
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