Recovery of Rhenium and Molybdenum from Molybdenite ...

Recovery of Rhenium and Molybdenum from Molybdenite Roasting Dust Leaching Solution by Ion Exchange Resins Sung-Ho Joo 1,2, Young-Uk Kim1, Jin-Gu Kang2, J. Rajesh Kumar , Ho-Sung Yoon 2, P. K. Parhi and Shun Myung Shin1,2,+ 1Department of Resource Recycling, University of Science & Technology (UST), Daejeon 350, Korea 2Extractive Metallurgy Department, Mineral Resources …

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INTERNATIONAL SYMPOSIUM ON RHENIUM AND RHENIUM …

Developed methods are used on a commercial level at industrial enterprises of Russia and CIS. A process for selectively recovering rhenium from exhausted Pt-Re catalysts includes next steps: roasting, acid- or alkali-assisted leaching, ion-exchange recovery or rhenium from the solution and preparing high-purity ammonium perrhenate (99.99%).

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Recovery of Rhenium from Superalloy Scrap | SBIR.gov

Very little rhenium is actually processed and isolated each year as compared to the millions of tons of copper and millions of pounds of molybdenum that are extracted from the same copper deposits. Opportunities exist for enhancing rhenium yield through technological improvements in discrete steps in the recovery process.

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Recovery and separation of molybdenum and rhenium from a ...

Recovery and separation of molybdenum and rhenium from a process solution was accomplished by a technique developed by the Federal Bureau of Mines involving a combined solvent extraction and activated carbon adsorption procedure.

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Recovery and Separation of Molybdenum and Rhenium from a ...

Recovery and separation of molybdenum and rhenium from a process solution was accomplished by a technique developed by the federal Bureau of Mines involving a combined solvent extraction and activated carbon adsorption procedure. The processing sequence required treatment of …

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Leaching kinetics, separation, and recovery of rhenium and ...

A study has been conducted for the separate recovery of molybdenum and rhenium from alkali leaching solution of molybdenite roasting dust by a selective precipitation method.

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Recovery of rhenium from molybdenite calcine by a resin-in ...

Download Citation on ResearchGate | Recovery of rhenium from molybdenite calcine by a resin-in-pulp process | This paper introduces a resin-in-pulp (RIP) hydrometallurgical process, which is ...

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RHENIUM RECOVERY FROM SUPERALLOYS AND ASSOCIATED METHODS ...

 · A method of recovery and refining of rhenium after oxidizing alloy scrap is discussed in an article “Recovery And Refining Of Rhenium, Tungsten And Molybdenum From W—Re, Mo—Re And Other Alloy Scraps” by B. Heshmatpour et. al. J., The Less-Common Metals, 86, pages 128 (1982), which is incorporated herein for reference.

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molybdenum rhenium recovery - sepkids.nl

process recovery rhenium vandenberglunteren.nl. Recovery and separation of molybdenum and rhenium Recovery and separation of molybdenum and rhenium from a process solution was accomplished by a technique developed by the Federal Bureau of Mines involving a combined solvent extraction and activated carbon adsorption procedure.

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Recover Rhenium by Solvent Extraction - 911metallurgist.com

Recovery of rhenium by solvent extraction can be considered to be a two step process involving concentration of a low grade highly contaminated dilute feed to a relatively pure concentrated feed, and final purification and refining of medium grade concentrated feed to the desired level for crystallization.

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Method for obtaining metallic rhenium by reduction of ...

The invention relates to the field of metallurgy of rare refractory metals, and in particular to methods for powders of rhenium from its compounds recovery using a gaseous reducing agents. Known recovery method perrenate potassium, which consists in the fact that the recovery process …

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EP0568407A1 - Process for reclaiming used Rhenium - Google ...

Process for recovery of rhenium from catalysts comprising rhenium oxide deposited on a porous support containing alumina, characterised in that the catalyst is first heated in an atmosphere containing oxygen and then treated with an aqueous solution of hydrogen peroxide and finally extracted with an aqueous solution of ammonia at a pH higher than 12.

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Enhancing PGM / rhenium returns from spent hydrocarbon and ...

While this process is capable of recovering the soluble PGMs and rhenium content in spent catalysts, an unknown portion of the desirable “pay metals,” sometimes as much as 20%, remain behind due to the insolubility of their substrates or carriers.

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US Patent for Methods and systems for recovering rhenium ...

With reference to FIG. 1, rhenium recovery process 10 is illustrated according to various embodiments of the present invention. Rhenium recovery process 10 can comprise metal-bearing stream 22, stationary phase 23, elution solution 25, and remainder solution 24. Metal-bearing stream 22 can comprise one or more metal values.

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Molybdenum Processing - imoa.info

Rhenium recovery. Some of the by-product molybdenite concentrates from copper mines contain small quantities (<0.10%) of rhenium. Molybdenum roasters equipped to recover rhenium are one of the principal commercial sources for this rare metal.

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Recovery and separation of molybdenum and rhenium from a ...

Recovery and separation of molybdenum and rhenium from a process solution. D. D. Fischer ... molybdenum persulfate precious metals precipitate pregnant solution process solution quaternary amine r-l r-l R. E. Lindstrom Recovery and separation reduced molybdenum species reoxidation result rhenium adsorption rhenium concentration rhenium ...

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RECOVERY OF RHENIUM USING ION EXCHANGE RESIN - youtube.com

 · https://chinasep.com/recovery-of-rhenium-using-ion-exchange-resin/ The solution containing Mo and rhenium (and impurities) can be purified and processed by s...

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Recovering platinum/rhenium from spent hydrocarbon ...

Platinum / rhenium catalysts are widely used in the processing of hydrocarbon products. As rhenium values have increased, recovery techniques from spent catalysts have not kept pace. However, most users look to their refiners for increased recovery yields.

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Recovery of rhenium from molybdenite calcine by a resin-in ...

 · Recovery of rhenium from molybdenite calcine by a resin-in-pulp process Recovery of rhenium from molybdenite calcine by a resin-in-pulp process Lan, X.; Liang, S.; Song, Y. 01 00:00:00 This paper introduces a resin-in-pulp (RIP) hydrometallurgical process, which is widely used in gold leaching and recovery industry, to recover rhenium effectively and economically from …

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Recovery of Molybdenum and Rhenium Using Selective ...

and uranium production. Therefore, the recovery of rhenium from them is usually carried out by a hydrometallurgical process.3­6) The hydrometallurgical process for the produc-tion of rhenium from the related by-products can be divided into two major successive processes, which are leaching process and recovery process. In the leaching process, the

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Novel Aqueous Processing of the Reverted Turbine-Blade ...

The extraction of rhenium increased from 9% to 98% with an increase in extractant concentration from 0.005 to 0.08 mol L –1 in the organic phase. On a metal-to-metal basis, the recovery value of 93% rhenium as NH 4 ReO 4 (9.5 g L –1 Re in the solution) demonstrated the potential of the present process.

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Rhenium: A Hidden Asset - Sabin Metal Corporation

If pyrometallurgical recovery is used, the contractual return to the customer may be made on the actual content of Re in the catalyst. Therefore, the most accurate methods of rhenium analysis may be used and do not need to be specified. If, however, the recovery method is digestion, only the soluble portion of the rhenium counts.

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Recovery of rhenium from molybdenite calcine by a resin-in ...

1. Introduction. The recovery of rhenium from molybdenite calcine has both important environmental and economic values. Rhenium is a less common metal with special properties and is widely used in the petrochemical industry, aviation, electron, medicine and metallurgy etc.

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Recovery and separation of molybdenum and rhenium from a ...

Recovery and separation of molybdenum and rhenium from a process solution. D. D. Fischer ... molybdenum persulfate precious metals precipitate pregnant solution process solution quaternary amine r-l r-l R. E. Lindstrom Recovery and separation reduced molybdenum species reoxidation result rhenium adsorption rhenium concentration rhenium ...

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Extraction and recovery of molybdenum and rhenium from ...

Get this from a library! Extraction and recovery of molybdenum and rhenium from molybdenite concentrates by electrooxidation : process demonstration. [Bernard J Scheiner; R E Lindstrom; D L Pool; United States. Bureau of Mines.] -- The Federal Bureau of Mines has successfully demonstrated an electrooxidation-solvent extraction-carbon adsorption process for recovering molybdenum and rhenium ...

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Efficient, Environmentally-Compatible Recovery ...

The investigators should work with a potential industrial partner interested in recovery of rhenium. The process should evaluated and be able to show the selectivity and effectiveness of the optimized process. PHASE III: The immediate application is for secondary metals suppliers.

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Process for the recovery of tungsten in a pure form from ...

A process is described for the recovery of tungsten from tungsten-containing materials which comprises the steps of (i) admixing the tungsten-containing material with a melt at a temperature of between 680/sup 0/C and 750/sup 0/C. The melt consists of a salt selected from the group consisting of ...

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Rhenium | Re - PubChem

Rhenium in the form of rhenium-platinum alloy is used as catalyst for catalytic reforming, which is a chemical process to convert petroleum refinery naphthas with low octane ratings into high-octane liquid products. Worldwide, 30% of catalysts used for this process contain rhenium.

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The method of recovery of rhenium from gases

(57) Abstract: The invention relates to a method for recovery of rhenium from gases, including gas cooling, process water solutions in the Venturi pipe and the subsequent extraction of rhenium …

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Recovery and Separation of Molybdenum and Rhenium from a ...

Recovery and separation of molybdenum and rhenium from a process solution was accomplished by a technique developed by the federal Bureau of Mines involving a combined solvent extraction and activated carbon adsorption procedure. The processing sequence required treatment of …

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Recovering rhenium photochemically - Chemical Engineering ...

The method has been shown to recover almost 95 wt.% of Re from solution — much higher than the 40–60% recovery achieved by conventional ammonia-based solvent-extraction — and the method is simpler than ion-exchange processes. And unlike solvent-extraction methods, the new process generates no nitrogen-containing wastewater.

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Rhenium: a hidden asset - digitalrefining.com

While all precious metals refiners are capable of recovering the PGMs from spent process catalysts, until now refiners have been unable to recover all of their Re content. There are many reasons for this, but the main reason concerns the inability to separate the remaining Re with a practical process for its recovery and subsequent refining.

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