Le scraping web, ou extraction de données web, est un processus …

Le scraping web, ou extraction de données web, est un processus utilisé pour extraire des données des sites Internet. Il s'agit d'une technique permettant de convertir les informations …

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Extraction liquide‐liquide par des esters alkylphosphoriques.

The extraction of macro-amounts of Yttrium from solutions of nitric and perchloric acids by di-(2-ethylhexyl)phosphoric acid has been studied. The extraction of Yttrium is more effective from …

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Nouveau, méthode respectueuse de l'environnement pour …

Une nouvelle méthode d'extraction et de séparation repose sur une protéine appelée lanmoduline (LanM) qui se lie d'abord à tous les éléments des terres rares de la source. ... L'équipe de …

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La séparation du scandium, du lanthane et de l'yttrium

La séparation du scandium, du lanthane et de l'yttrium. Author links open overlay panel P. Radhakrishna. Show more. Add to Mendeley. Share. ... A critical review on separation and …

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EP0116483A1

L'invention concerne un procédé de récupération globale de l'uranium, de l'yttrium, du thorium et des terres rares contenues dans une phase organique. Ce procédé est caractérisé en ce que …

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Extraction and separation of yttrium from the rare earths with

The extraction and separation of yttrium from the rare earths with CA-12–TBP in chloride media has been studied. The result shows that CA-12 is better extractant than …

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A green yttrium extraction system containing naphthenic …

Yttrium extraction usually produces waste water and suffers from difficulty in phase separation when using saponified naphthenic acid as the extractant. Herein, a non-saponified …

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The development of sustainable yttrium separation process …

Furthermore, a novel sustainable process for the separation of yttrium from rare earth enrichments using [N1888][CA12] as extractant was developed. Yttrium-enriched rare …

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FR2377453A1

Procede d'isolement de l'yttrium des terres rares Info Publication number FR2377453A1. ... C01F17/17 — Preparation or treatment, e.g. separation or purification involving a liquid-liquid …

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A review on yttrium solvent extraction chemistry and …

This paper reviewed various systems such as neutral phosphorus and acid phosphorus, carboxylic acid and amine extractant for solvent extraction chemistry of yttrium, …

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Yttrium (Y) – Definition, Preparation, Properties, …

The production of yttrium involves several steps, starting from the extraction of yttrium-containing minerals to the purification and production of pure yttrium metal or its compounds. Here's a general overview: Extraction from …

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Yttrium

Occurrence Abondance de l'yttrium. L'yttrium se mélange souvent aux minéraux contenant des terres rares que l'on retrouve dans certains minerais d'uranium. Il apparaît dans les sables de bastnäsite ((Ce, La, Th, Nd, Y)(CO 3)F) et de …

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Studies on the solvent extraction of yttrium

Observations of yttrium extractions using such diverse reagents asoxinc1, tropolonc1', isopropyltropolonc3, acutylacetonc4, and benxoylacctone6 have been reported. The extraction …

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(PDF) Environnement minier : Résidus de l'industrie minière …

processus d'extraction des éléments de valeur du. minerai (opération de traitement). Ils se composent. de particules relativement fines dont la taille des.

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SEPARATIONS OF YTTRIUM AND SOME RARE EARTHS BY …

Gadolinum and dysprosium were separated from yttrium to a considerable extent by extracting from a very low nitric acid solution. The extractions of these yttrium-rare earth concentrates …

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Understanding Yttrium: Applications, Properties & History

Explore the comprehensive guide on yttrium, a transition metal with a wide range of applications in modern technology and medicine. Discover its history, physical and chemical properties, as …

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Application of solvent extraction operation to recover …

The same authors (2016b) reported another series of experiments in which solvent extraction of yttrium and europium from nitrate leach liquor was discussed. Yttrium was …

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Phosphate Extraction Process

PHOSPHATE EXTRACTION PROCESS Orris E. Albertson and Robert J. Sherwood The sanitary engineer has all the tools necessary to eliminate effectively the gross quantity of organic pollu …

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4 : le processus d'extraction de connaissances à …

Download scientific diagram | 4 : le processus d'extraction de connaissances à partir de données 1. poser le problème : avant d'engager une action, il faut d'abord bien définir le problème ...

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Extraction du pétrole : techniques et procédés dans l'industrie

Enfin, le processus d'extraction du pétrole peut dégrader physiquement le paysage, entraîner une perte de sol et contaminer les sources d'eau. Ce problème est particulièrement grave dans le …

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News

Mining, extraction and smelting of yttrium element. Yttrium is a rare earth element that usually does not exist in the form of pure yttrium, but in the form of yttrium ore. The following is a …

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CA2803863A1

PROCÉDÉ D'EXTRACTION DE CELLULOSE DOMAINE TECHNIQUE DE L'INVENTION La présente invention concerne un procédé d'extraction de cellulose. DESCRIPTION DE L'ART …

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EP0451003B1

yttrium substituted rare earths general formula Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal …

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Organigramme de l extraction d yttrium

Organigramme du processus d extraction hydraulique de l or. organigramme du processus d extraction de l or · Organigramme du processus d extraction du minerai . minerai dor cyanure …

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Yttrium : Propriétés et utilisations des éléments

L'yttrium est un métal de transition rare connu pour ses propriétés chimiques et physiques uniques ; il est essentiel dans l'électronique, les écrans de haute technologie et …

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Qu'est-ce que l'élément Yttrium, son application, …

Afin d'extraire l'yttrium de pureté plus élevée, un processus de séparation est nécessaire, en utilisant généralement l'extraction de solvant, l'échange d'ions ou d'autres méthodes chimiques.

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Yttrium

Yttrium is often used in alloys, increasing the strength of aluminum and magnesium alloys. Yttrium is one of the elements used to make the red color in CRT televisions. It is also used as a deoxidizer for non-ferrous metals such as …

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Extraction of Yttrium from Nd Hydroxide …

The result showed that the optimization of separation extraction neodymium from samarium, yttrium and praseodymium in Nd(OH)3 concentrated with TBP, obtained the optimum condition of pH = 0.2 ...

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Yttrium Mining

Processing and extraction: The separation of yttrium from bastnäsite and xenotime is a complex process. Firstly, the ores are leached with sulfuric acid. After leaching, oxalic acid is added to introduce the ore to ion exchange …

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Non-destructive DNA extraction methods for …

One of the major challenges in molecular analysis of arthropods, especially for natural enemies of insect pests, is the intact preservation of the specimens to be integrated …

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