processus de minéralisation de cuivre

The extraction of vanadium from titanomagnetites and other sources

2020.1.15  Quenching after roasting (22.5–30% Na 2 CO 3, 1025 °C) resulted in increased chromium and vanadium extraction when leaching a Canadian titaniferous

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A critical review on extraction and refining of vanadium metal

2021.12.1  V 2 O 5 is an important intermediate vanadium product obtained from vanadium ore smelting and extraction. Based on the reduction, chlorination and

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Extraction of vanadium from V-containing titanoferrous

2021.1.1  Vanadium extraction processes based on the available raw materials include the main extraction process, where the main purpose is to extract vanadium by

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Effective Extraction of Vanadium from Bauxite

2021.8.25  In this study, a novel process of low-temperature sulfating roasting–water leaching is presented to extract vanadium from the

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A Method to Extract Vanadium from HIsmelt Reduction Slag:

2023.4.28  Abstract. The HIsmelt smelting reduction process is an efficient direct reduction process for smelting vanadium titanomagnetite ores. About 80% vanadium is

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Minerals Free Full-Text Efficient Extraction of Vanadium

In addition to vanadium-bearing shale, vanadium–titanium magnetite is another major raw material from which to extract vanadium. China’s vanadium–titanium magnetite reserves

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Extraction of vanadium from titanoferrous magnetite

2021.1.1  Vanadium does not exist as a single mineral, but usually in an isomorphic form with magnetite. The vanadium grade in the ore is positively correlated with the iron

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Vanadium properties, toxicity, mineral sources and extraction

2022.1.4  Ye G, Hu Y, Tong X, Lu L (2018) Extraction of vanadium from direct acid leaching solution of clay vanadium ore using solvent extraction with N235.

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Effective Extraction of Vanadium from Bauxite-Type

2021.8.25  Shi [22] studied the process of extracting vanadium from shale by sulfuric acid roasting and leaching, and found that the leaching efficiency of vanadium

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“抑制-萃取”法从含铁酸溶液中选择性提钒

2020.7.1  Abstract: The extraction of vanadium from stone coal by acid leaching has attracted much attention because of its characteristic of environment friendly and high metal yield. However, the process is seriously affected by concentrated Fe 3+ in the vanadium mother solution. in the vanadium mother solution.

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Minerals Free Full-Text Pre-Concentration of

Due to the low grade of V2O5 in stone coal, the existing vanadium extraction technologies face challenges in terms of large handling capacity, high acid consumption and production cost. The pre-concentration of vanadium

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Efficient Separation and Recovery of Vanadium (V) from

2022.2.2  Hydrochloric acid leaching has been widely used in the recovery process of vanadium due to its efficient selectivity. It was necessary to further separate vanadium from hydrochloric acid leaching solution. Four extractants of P204, P507, Cyanex272, and N1923 were compared for extraction of vanadium from a simulated hydrochloric acid solution,

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describe extraction of vanadium from its ore

Vanadium processing Britannica Vanadium is extracted from carnotite as a coproduct with uranium by leaching the ore concentrate for 24 hours with hot sulfuric

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Minerals Free Full-Text Pre-Concentration of Vanadium

2016.8.4  Due to the low grade of V2O5 in stone coal, the existing vanadium extraction technologies face challenges in terms of large handling capacity, high acid consumption and production cost. The pre-concentration of vanadium from stone coal before the extraction process is an effective method to reduce cost. In this study, detailed

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Decarbonization kinetics for fluidized roasting of vanadium

2023.5.5  Vanadium-bearing carbonaceous shale (stone coal) is an important vanadium resource [1,2,3].In China, 87% of the total vanadium is stored in carbonaceous shale, reaching 118 million tons (estimated by V 2 O 5), which is 6.7 times the reserves contained in vanadium-titanium magnetite [3,4,5].However, a high carbon content (10 ~

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Recovery of chromium by calcium-roasting, sodium

2020.10.20  The core ore is mainly Fe and Cr, composed about 68% of Cr 2 O 3 and 32% of FeO and exists in a spinel form of FeCr 2 O 4 ... the shrinking core model was used to describe the leaching behavior of chromite. ... Teng A, Xue X (2019) A novel roasting process to extract vanadium and chromium from high chromium vanadium slag using a

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Process and Mechanisms for Extraction of Chromium and Vanadium

2023.1.17  The vanadium contained in titaniferous magnetites is transformed into metallic vanadium in pig iron in a blast furnace. The metallic vanadium is then oxidized to vanadium oxides in the converter and enters into the steel slag called vanadium slag. 1,2,3,4,5,6,7,8 The contents of chromium and vanadium from the vanadium slags are

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Vanadium in phyllosilicate ores: Occurrence, crystal

2023.10.1  Samples of uranium and vanadium phyllosilicates for this project came from the ore head samples and leach residues of experimental work conducted by Radwany (2021). Six ore samples (LS01, LS02, LS03, LS04, LS05, and LS11) were collected from the Pandora mine in the La Sal mining complex, representing the common Salt Wash-hosted

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Vanadium removal from roasted LD converter slag:

2013.9.15  As seen in Fig. 6 c, at shorter leaching intervals, increasing the temperature improves the vanadium extraction, while at longer intervals, the extraction decreases slightly. The observed trend clearly demonstrates the “two-step” nature of the vanadium extraction process as mentioned by Aarabi et al. [10].

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Recovery of Vanadium, Titanium, and Iron from Vanadium

2022.11.22  Vanadium titanomagnetite concentrate (VBT) is a kind of multi-metal element symbiotic compound ore, containing iron, vanadium, and titanium [].More than 85% of vanadium and 90% of titanium originate from VBT in China [2, 3].The western Liaoning area is another large deposit in China besides Panzhihua, which is characterized by high

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Vanadium extraction from V-bearing shale using oxidation

2023.2.1  Currently, for this V-bearing shale ore, a vanadium leach extraction of approximately 78 % is obtained with the addition of 300 kg of 98 % sulfuric acid and 30 kg CaF 2 per ton of feed ore (pre-concentration ore), a leach temperature of 90 °C, and a leach time of 24 h. However, this process is associated with high production costs and serious ...

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Theoretical Modeling and Experimental Evaluation of

2023.12.16  extract vanadium from VTM [13, 14]. Li et al. used a cal-cication roasting acid leaching process to directly extract vanadium from VTM [15]. However, due to the formation of a variety of calcium vanadates during the calcication roast-ing of vanadium, it is sensitive to the pH of the solution, so it is dicult to obtain the ideal leaching rate [16].

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Vanadium extraction from titano-magnetite by hydrofluoric

2016.12.10  Section snippets Materials. The sample of vanadium titano-magnetite ore was collected from Shanxi province, China. After crushing and grinding, the particle size of the sample was − 0.074 mm accounting for 90%.The ore sample and vanadium concentrate after low intensity magnetic separation were analyzed by using inductively coupled

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Vanadium removal from spent sulfuric acid plant catalyst

2020.10.19  The vanadium content in ore is usually less than 2%; thus, it is recovered as by-product or co-product in processing of other metals . The main source of vanadium is the so-called urban mining (1–12%), which is the processing of waste materials for recovery of this metal, that outscores traditional mining (1.8%) in terms of V extracted . The ...

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钒钛磁铁矿提钒新工艺研究 - cqu.cn

2018.10.5  钒钛磁铁矿提钒新工艺研究. 摘要: 中国对钒钛磁铁矿中钒的利用仍然存在着诸多难题，特别是对于低品位的矿石，传统的高炉-转炉工艺更加难以实现对钒的高效提取利用。. 针对其钒钛磁铁矿的利用问题，开展了新工艺的探索，通过竖炉煤基还原-电炉熔分工艺 ...

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Minerals Free Full-Text The Prospect of Recovering Vanadium

2022.12.23  Black shale ore contains rich strategic metal resources such as vanadium, nickel, and molybdenum, but due to its complex composition, it is currently only used in the vanadium extraction industry. Metals such as nickel and molybdenum have not been effectively recovered, resulting in environmental pollution and resource waste.

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Vanadium extraction processes using vanadium resources

The solubility of vanadium was studied during aqueous leaching and in solutions of H2SO4 and Na2CO3. The highest solubility of vanadium was seen in H2SO4 solutions. The degree of extraction of ...

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Extracting vanadium pentoxide from minerals and composite

2021.1.1  Extracting vanadium pentoxide from uranium molybdenum vanadium ore. The raw materials processed by the manufacturers of vanadium in the United States are mainly vanadite (K 2 (VO 2) 2 (V 2 O 8)3H 2 O or K 2 O2UO 2 V 2 O 5 3H 2 O), uranium molybdenum vanadium ore, and kakoxene. Recently, large vanadite deposits were found

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A Method to Extract Vanadium from HIsmelt Reduction Slag:

2023.4.28  The vanadium titanomagnetite (VTM) ore is a special type of iron ore that contains not only iron oxides but also significant amount of vanadium (0.5–3 wt.% as in V 2 O 5) is the main resource for vanadium production [].Around 15% of global vanadium is extracted from the VTM ore directly and 75% from vanadium slag, which is a steel slag

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Selective Vanadium Separation from V-Bearing Roasted Ore

2023.8.11  In this study, a cleaner process of water leaching was proposed to extract vanadium from V-bearing roasted ore with V2O5 content of 1.06 wt.%, and the main mineral compositions of the roasted ore were quartz, gypsum, misenite and munirite. The effects of water leaching parameters such as leaching temperature, leaching time, liquid-solid ratio,

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The separation of gold and vanadium in carbonaceous gold ore

2019.10.1  The chlorination roasting process also can be used to extract gold from the refractory gold ore. Based on the strong oxidation of chlorine gas, the gold in the refractory gold ore can react with chlorine gas at high roasting temperature to generate gold chloride which has high volatility and low melting point, thereby realizing the effective ...

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(PDF) A review of processing technologies for vanadium extraction from ...

2018.8.1  Black shale ore contains rich strategic metal resources such as vanadium, nickel, and molybdenum, but due to its complex composition, it is currently only used in the vanadium extraction industry.

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A Critical Review of Extraction Methods for Vanadium from

2022.12.4  Petcoke is a solid carbon-rich residue produced during petroleum refining. Petcoke mineral matter is rich in vanadium that, when alloyed with other metals, can significantly improve its properties. Vanadium extraction from steel slags is well studied, while extraction from secondary sources such as petcoke is not well understood.

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Vanadium extraction from black shale: Enhanced leaching

2019.8.1  During the direct acid-leaching process of vanadium extraction from black shale, the participation of fluoride ions greatly improves the leaching efficiency of vanadium. Its enhanced effect is influenced by the sulfuric acid concentration, amount of added fluoride, leaching temperature, and leaching time. The migration of fluoride ions during leaching is

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Efficient Separation and Recovery of Vanadium (V) from

2022.2.2  It can be seen from Figure Figure1 1 that the pH value and the extractants have significant effects on the extraction efficiency of vanadium. The extractants of P507 and Cyanex272 reached maximum vanadium extraction efficiencies of 72 and 64% respectively, at a pH value of 1.5, while a maximum vanadium extraction efficiency of

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Metals Free Full-Text Vanadium–Titanium Magnetite

2023.6.16  This paper investigated a pellet ore production process in which vanadium was extracted from vanadium and titanium magnetite concentrates using sulfuric acid leaching. Calcium and magnesium were added to the iron ore concentrate during pellet production to produce calcium vanadate and magnesium vanadate after roasting. The

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Nuclear fuel cycle' Extractingg uranium from its ores

2014.6.4  byproduct of the vanadium and radium industries and the total world consumption was equivalent to only a few tonnes of uranium each year. By the early 1950s world ... nuclear fuel cycle is to chemically extract the uranium from the ore and produce a partially refined product with a uranium content of at least 65%. This material is normally ...

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Rapid Vanadium Extraction from Roasted Vanadium Steel

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 vanadium

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