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ores are smelted to extract vanadium and iron us ing the cur-rent technology in China Pan-S teel shown in Fig. 1, the. ... To co-extract vanadium, titanium, and chromium from vanadium slag, a ...
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In this paper, the recovery of vanadium from the secondary tail deposits of iron ore by salt roasting-alkaline leaching and solvent extraction has been investigated. To extract the vanadium, after the characterizations studies (XRF, SEM, and EPMA analyzes), preliminary leaching was performed using HCl to reduce lime.
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A method ( 10 ) for the extraction and recovery of vanadium from its ores, the method ( 10 ) characterised by the steps of: (i) Acid leaching ( 12 ) of an ore containing vanadium and iron to extract vanadium and iron into solution; (ii) Passing the product ( 78 ) of the leach step (i) to a solid/liquid separation step ( 80 ); (iii) Passing the liquid product ( 82 ) of separation step (ii) to a ...
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Vanadium-bearing materials are treated by means of several processes such as calcium reduction, roast/leach, solvent extraction and ion exchange to recover vanadium …
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This iron ore typically contains 1.0% to 1.5% V2O5. Titaniferous magnetite ore is mined in South Africa and China and processed for vanadium extraction. Tianiferous magnetite ore is also processed in steelmaking operations in China, Russia and South Africa.
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tion of vanadium from the low-grade vana dium ores of Pumpkin Buttes and Nine Mile Lake. The best vanadium extraction from sam ple 1 (Pumpkin Buttes) was 86 pet using 300 lb/ton H2S04i however, extraction of over 80 pet of the vanadium was achieved with only 200 lb/ton acid. The best van adium extraction from sample 2 was 88
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on the vanadium extraction from titanomagnetite is shown in Figure 1. The vanadium extraction appears to be insensitive to variations in NaCl concentration in the studied range, as shown by the almost constant vanadium extraction of 64% and 63% at NaCl concentrations of …
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The vanadium recovery in this process route is around 85 % [3]. However, this process has the economic disadvantage that a relatively large quantity of the material has to be handled in the roast-leach operation for the recovery of vanadium. The processing of titanium ores has been reviewed in …
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Under the optimal conditions, 93.67% iron from the raw ore was recovered in the form of iron nugget with 95.44% iron grade. After a water leaching process, 85.61% of the vanadium from the roasting slag was leached, confirming the sodium oxidation of most of the vanadium oxides to water-soluble sodium vanadate during the roasting process.
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Vanadium-bearing materials are treated by means of several processes such as calcium reduction, roast/leach, solvent extraction and ion exchange to recover vanadium either as metal, ferrovanadium, vanadium pentoxide, or in the form of various chemicals. The recovery of aluminum and magnesium metal from smelters and refineries generates vanadium ...
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Vanadium is recovered from these ores largely as vanadium pentoxide (V^sub 2^O^sub 5^) (Perron, 2001). Major sources of vanadium-bearing magnetite ores are scattered throughout Australia, China ...
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A method (10) for the extraction and recovery of vanadium from its ores, the method (10) characterised by the steps of: (i) Acid leaching (12) of an ore containing vanadium and iron to extract vanadium and iron into solution; (ii) Passing the product (78) of the leach step (i) to a solid/liquid separation step (80); (iii) Passing the liquid product (82) of separation step (ii) to a solvent ...
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A new bauxite-type vanadium ore with a grade of 0.96% V2O5 was found in Hanzhong, China, having quartz, illite, and calcite as the main mineral constituents and vanadium that mainly occurs in the aluminosilicate lattice of illite by replacing Al3+ with V3+ in isomorphism form. In this study, a novel process of low-temperature sulfating roasting–water leaching is presented to extract vanadium ...
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The chemical compositions and physical properties are relatively homogenous and fixed, and the minerals are generally crystalline. V-bearing titanoferrous magnetite is a valuable ore, even though it has a low vanadium concentration, and is the main raw material for vanadium extraction.
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The vanadium extraction was 92 pct under these conditions. The best salt roast-leach results on the low-grade ore were obtained with a 4-hr roast at 800° C with 10 pct salt followed by an 18-hr leach at 80° C and 300 lb/ton H2SO4. The vanadium extraction was 88 pct under these conditions.
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US1054102A US68964012A US1912689640A US1054102A US 1054102 A US1054102 A US 1054102A US 68964012 A US68964012 A US 68964012A US 1912689640 A US1912689640 A US 1912689640A US 1054102 A US1054102 A US 1054102A Authority US United States Prior art keywords carnotite concentrates liquor vanadium tank Prior art date Legal status (The legal status is an …
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased. Vanadium Ores mineral formations containing vanadium in amounts sufficient to make extraction of the element by modern methods economically feasible. The most important vanadium-ore minerals are vanadinite (19 percent V2O5), descloizite (22 ...
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The present invention discloses a leaching process for extracting vanadium from calciners of ore containing vanadium and its application in bone coal blank calcination-direct leaching vanadium-extracting process. It is mainly characterized by that the broken bone coal is calcined in vertical kiln, under the condition of 800-1100 deg.C oxidated and decarbonized, then the calciners are ...
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The extraction and recovery process of vanadium as a by-product from the tailings of a uranium processing plant poses many problems. In this study vanadium is recovered from impounded resin-in-pulp tailings and from the current tailings of a uranium plant which did not include a circuit for vanadium recovery in its initial design.
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VANADIUM EXTRACTION FROM IDAHO MUDSTONES By M. Hayashi,1 I. L. Nichols,2 and J. L. Huiatt3 ABSTRACT The Bureau of Mines conducted laboratory studies on Idaho mudstones to
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extract vanadium [2, 11-15]. In titanomagnetite (i.e. one of the most promising vanadium ores), vanadium is available in the form of trivalent or tetravalent ions. Vanadium is produced from this ore through vanadium pentoxide under the oxidative roasting operation [16]. During
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Recovery of vanadium from magnetite ore by direct acid leaching is discussed. The proposed process, which employs a mixture of nitric and sulfuric acids, avoids pyrometallurgical treatments since such treatment consumes a high amount of energy. To determine the optimum conditions of vanadium recovery, the leaching process is optimized through Plackett–Burman (P–B) …
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Iron, Titanium and Vanadium Extraction from Titaniferous Magnetite Ores Andrey Dmitriev Ural Branch of the Russian Academy of Sciences, Russia The comes about research facility, mechanical and calculation investigates of physical, chemical and thermophysical forms at the oxidizing simmering (sintering and pelletizing) of the titaniferous crude
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The new process of vanadium extraction from molten vanadium slag by direct oxidation and sodium activating method is reasonable and feasible. The experimental results show that in the new process, vanadium in the roasted slag exists mainly in the form of water-soluble sodium vanadate and the vanadium water leaching efficiency can reach to 80%,
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extract vanadium from the magnetite ore of Saghand mine in central Iran. The response . surface methodology based on the central composite desig n model was applied to .
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The cake after leaching were sent to the acid additional extraction of vanadium at T : W = 1 : 3, pH of 0.3. Separating the solution from the solid phase by filtration, the precipitate was washed with T : W = 1 : 1. The filtrate contained, g/l: V 2 O 5 - 8,5, CaO - 0,13, Fe total is 12.8. The degree to extract vanadium in the solution of 30.1 ...
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The carnotite ore, having been treated by the above described process to extract the uranium and radium, is benefited for use of the salt roasting process to extract the vanadium from it as it is milled ready for mixture with salt and any excessive calcium has been made inert.
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A new extractant HBL@101 was used to directly extract vanadium from high acid leach solution of stone coal. The effects of acidity and Eh of feed, time, phase ratio and temperature on the extraction of vanadium were investigated. The extraction distribution isotherm was also obtained. The results showed that the extraction of vanadium reached 98% in single stage with A/O ratio of 1:1 at 35~45 ...
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The invention discloses a method for extracting vanadium pentoxide from vanadium containing clay ores. The method includes the following steps of subjecting the vanadium containing clay ores which are used as raw materials to drying, crushing and ball milling until the particle sizes of more than 90% of the raw materials are -1mm; adding a sulfur compound which is less than 8% of the ores by ...
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Since vanadium is essentially mined as the by-product of the ores that are mined, the mining methods suitable to those ores are taken into consideration. Vanadium is often collaborated with titanium, which is separated as an impurity during processing. The higher the titanium content in the ore, the harder it is to extract the vanadium metal.
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extraction 0f vanadium titanium from iron ore_Extraction 0f Vanadium Titanium From Iron OreIron ore Wikipedia. Iron ores are rocks and minerals from which metallic iron can be economically extracted. Iron ore is the raw material used to ma
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Vanadium slag is a raw material for vanadium extraction with high vanadium content, and the recovery technology is relatively mature. At present, the general process is sodium roasting process, with different equipment. Large enterprises generally use rotary kiln, while some enterprises use roasting furnace.
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