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Extraction process for recovery of rhenium - GTE Sylvania ...

In particular, it relates to a process for the recovery of rhenium from sodium molybdate solutions prepared from molybdenite concentrates. 2. Prior Art . 2 S 7) is precipitated from the rhenium-bearing acid solution by H 2 S gas. The rhenium sulfide is then oxidized and converted to NH 4 ReO 4 by the addition of NH 4 OH. The NH 4 ReO 4 is ...

Recovery of rhenium from aqueous mixed metal solutions by ...

Rhenium was also recovered efficiently and selectively from rhenium–tungsten solutions (initial concentration 10.4 mM for each metal): when the pH ranged from 7.0 to 12.0 and the irradiation time was 6 h, the rhenium recovery was 90–95% and the rhenium recovery ratio was 7.3–45 times that of …

Highly enhanced selectivity for the separation of rhenium ...

An effective method based on magnetic solid-phase extraction for the selective recovery of rhenium and molybdenum has been developed using diethylamine-functionalized magnetic CuFe2O4 ([email protected]) as adsorbents. Various experimental parameters that could affect the extraction efficiency had been investigated in detail. [email protected] exhibited high adsorption ability and …

Highly enhanced selectivity for the separation of rhenium ...

The extraction recovery of $$ {text{ReO}}_{4}^{ - } /{text{MoO}}_{4}^{2 - } $$ was more than 93 % from Mo–Re simulated industrial leach liquor. An effective method based on magnetic solid-phase extraction for the selective recovery of rhenium and molybdenum has been developed using diethylamine-fun

Selective recovery of rhenium from molybdenite flue-dust ...

The selective extraction of rhenium from the leach liquor of molybdenite roasting flue-dust and its subsequent stripping were investigated using the solvent extraction technique. In this study, tri-butyl phosphate (TBP) as organic extractant in kerosene and metals bearing solution (in mg/L: 6042 Mo, 208 Re, 534 Cu, 1982 Fe, 32 Mg, and 19 Pb ...

Process of recovering rhenium values from complex ...

A typical example of the process of this invention is the recovery of rhenium values from the residual mother liquor obtained following the crystallization of ammonium perrhenate from an ion exchange stripping solution. Ion exchange methods of extracting rhenium from rhenium-bearing solutions are disclosed in U.S. Pat. Nos. 2,876,065; 3,244,475 ...

How to Recover Rhenium from Uranium Leach Liquor

The discovery of rhenium on the ion exchange resin used at the uranium in-situ leach operations at Palangana (Texas) led to a laboratory study on the possible methods of recovery. Rhenium, present in small amounts in the ammonium …

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Global and China Recovery Rhenium Market Insights ...

Recovery Rhenium market is segmented by region (country), players, by Type, and by Application. Players, stakeholders, and other participants in the global Recovery Rhenium market will be able to gain the upper hand as they use the report as a powerful resource. The segmental analysis focuses on revenue and forecast by region (country), by Type ...

[38]Cheemaa H A, Ilyas S, Masud S, et al.Selective recovery of rhenium from molybdenite flue-dust leach liquor using solvent extraction with TBP [J]. Separation …

US2414965A - Process for recovering rhenium - Google Patents

US2414965A US499718A US49971843A US2414965A US 2414965 A US2414965 A US 2414965A US 499718 A US499718 A US 499718A US 49971843 A US49971843 A US 49971843A US 2414965 A US2414965 A US 2414965A Authority US United States Prior art keywords rhenium solution potassium ores compounds Prior art date Legal status (The legal status is an assumption and is not …

Study of the ability of 2-AMPR resin to separate Re(VII ...

Nebeker N, Hiskey JB (2012) Recovery of rhenium from copper leach solution by ion exchange. Hydrometallurgy 125:64–68. Article Google Scholar 17. Cheema HA, Ilyas S, Masud S et al (2018) Selective recovery of rhenium from molybdenite flue-dust leach liquor using solvent extraction with TBP. Sep Purif Technol 191:116–121

How to Recover Rhenium from Uranium Leach Liquor

The discovery of rhenium on the ion exchange resin used at the uranium in-situ leach operations at Palangana (Texas) led to a laboratory study on the possible methods of recovery. Rhenium, present in small amounts in the ammonium carbonate leach liquors as the perrhenate anion, ReO4-, concentrated on the anion exchange resin, which was a factor ...

Recovery of rhenium(VII) with triisooctylamine from ...

Extraction recovery of rhenium(VII) with triisooctylamine from model sulfuric acid solutions was studied. The effect of the composition of the organic and aqueous phases on the recovery of rhenium(VII) was analyzed, and the composition of rhenium(VII) complexes in the organic phase was determined. The possibility of effective re-extraction of rhenium(VII) from triisooctylamine with …

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

A preliminary study on the hydrometallurgical recovery of rhenium from an engine-reverted superalloy, CMSX-4, was performed. The novelty of this work dealt with (i) the applicability of electro-generated Cl2 in rhenium leaching and (ii) the maneuvering of the organic extractants based on the metal speciation in leach liquor. In a two-step HCl leaching, more than 98% rhenium was …

Recovery of Molybdenum & Rhenium From Molybdenite …

Molybdenum and Rhenium Recovery. Figure 8 details the process sequence employed for recovering molybdenum and rhenium from the electrooxidation reaction pulp. Liquid-solids separation was accomplished in two 3-foot rake thickeners in series with a 1- by 3-foot washing rotary drum filter. ... (Alamine 336) and 7 vol-pct decyl alcohol dissolved ...

Extractive metallurgy of rhenium: a review | SpringerLink

A variety of processing technologies exist for recovery from both primary and secondary sources of rhenium. Currently, there are no known primary rhenium deposits; thus, the method in which primary rhenium is produced is dependent on the commodity of which it is a byproduct, e.g., copper, molybdenum, uranium, etc. In addition, focus on the recovery of rhenium from secondary sources, …

Recovery of molybdenum and rhenium in scrub liquors of ...

The present work addresses the recovery of rhenium from scrub liquor of molybdenite concentrate roasting fume and dust by solvent extraction method. According to the results, recovery of rhenium from the scrub liquor is not practical unless molybdenum is removed in advance. The extraction of molybdenum was carried out using a D2EHPA-TBP system ...

SAMHSA's Working Definition of Recovery

Through the Recovery Support Strategic Initiative, SAMHSA has delineated four major dimensions . that support a life in recovery: Health. Overcoming or managing one's disease(s) or symptoms—for example, abstaining from . use of alcohol, illicit drugs, and non-prescribed . …

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Recovery of Polyvinyl Alcohol from Desizing Wastewater Using a Novel High-Shear Ultrafiltration Module; Recovery of Polyphenols from Rose Oil Distillation Wastewater Using Adsorption Resins – A Pilot Study; Recovery of positive future thinking within a high-risk parasuicide group: Results from a pilot randomized controlled trial ...

Recovery of Radiogenic Osmium-187 from Sulfide Copper Ores ...

The implementation of this technology of processing mother liquor derived from solid-phase stripping of rhenium results in an average recovery from these solutions of 80 per cent of the osmium metal. (80 per cent is direct recovery of osmium from the mother liquor, the other 20 per cent in solid and liquid byproducts is recycled.)

(PDF) Recovery of rhenium from mineral raw materials of ...

The base mineral raw materials for recovery of rhenium are solid and liquid by-products of copper, lead and uranium production. In pyrometallurgical processing of sulfide copper concentrates ...

Separation of rhenium and molybdenum from molybdenite ...

This paper investigates the recovery of rhenium and molybdenum from a molybdenite concentrate using a hydrometallurgical treatment method. The molybdenite concentrate is leached with nitric acid and subjected to solvent extraction to recover and separate rhenium and molybdenum from the leached liquor.

Recovery of molybdenum and rhenium in scrub liquors of ...

The present work addresses the recovery of rhenium from scrub liquor of molybdenite concentrate roasting fume and dust by solvent extraction method. According to the results, recovery of rhenium ...

US8956582B2 - Rhenium recovery - Google Patents

There is provided a hydrometallurgical process of recovering rhenium values from mixtures thereof with other metal values in which the rhenium values constitute a minority amount, for example super-alloys, which comprises subjecting the mixture to strongly oxidizing acid conditions, preferably an aqueous mixture of hydrochloric acid and nitric acid, so as to form perrhenate species of at least ...

Method for the recovery of uranium from pregnant liquor ...

The method of claim 1 wherein the pregnant liquor solution comprises from 25 to 2000 mg/L uranium. 3. The method of claim 1 wherein the pregnant liquor solution comprises from 35 to 220 g/L sulfate. 4. The method of claim 1 further wherein 10-25% of the amount of uranium from the pregnant liquor solution is recovered. 5.

Recovery of rhenium and molybdenum from a roaster …

Recovery of rhenium and molybdenum from a roaster fume scrubbing liquor by adsorption using activated carbon. ... A liquor containing only Re and Mo could be produced from low sulphate liquors produced during scrubbing of molybdenite roaster fumes (containing 155–240 ...

Prospects for selective-and-advanced recovery of rhenium ...

Горные науки и технологии (Sep 2021) . Prospects for selective-and-advanced recovery of rhenium from pregnant solutions of in-situ leaching of uranium ores at Dobrovolnoye deposit

Global Recovery Rhenium Market Evolutionary Growth, Key ...

Pune, Maharashtra, India, December 28 2020 (Wiredrelease) Prudour Pvt. Ltd :According to new reliable research on Recovery Rhenium Market, featuring a short universal view of the size of the market, geographical scope and key trends based on volume and value, far-reaching SWOT analysis, development plans, % value of CAGR analysis and growth factors.

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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US7763096B2 - Recovery of rhenium - Google Patents

The present invention relates to a method for recovering rhenium from an ethylene oxide catalyst containing rhenium and at least silver on a solid support, wherein at least a substantial portion of the rhenium present in the catalyst is extracted by intimate contact of the catalyst with one or more polar non-acidic organic solvents substantially free of water such that a rhenium-containing ...