Extractive metallurgy of rhenium: a review

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 …

Topologically Close Packed Phases in an Experimental Rhenium-Containing

The kinetics, morphology and composition of the formation of TCP phases in an experimental alloy containing no tungsten is studied. At high temperature P phase forms after 20 h, whereas below 950 ...

Treatment of Rhenium-Containing Effluents Using …

Maximum removal of rhenium (75-84%) and molybdenum (85%) were obtained at pH 2.0; Langmuir isotherm showed the maximum yeast adsorption capacities toward rhenium ions ranged between 7.7 and 33 mg ...

Research on Separation and Extraction of Valuable Metals

The low-grade polymetallic complex molybdenum concentrate contains molybdenum, copper and a small amount of rhenium, the main mineral phase being …

Treatment of Rhenium-Containing Effluents Using …

2.1. Batch Solutions. The metal solutions with given concentrations were prepared by dissolving a suitable amount of NaReO 4, CuSO 4, and Na 2 MoO 4 (Sigma Aldrich, analytical grade) in deionized water. Since rhenium is mainly recovered as a byproduct of molybdenum and copper processing, four systems with the following …

The Behavior of Some Elements Found in Ammonium Perrhenate …

In the older State Standards of Russia and Kazakhstan [], NH 4 ReO 4 was divided on the basis of chemical content into PRA-0 and PRA-1, this having changed to AP-00, AP-0, and AP-1 [].Correspondingly, rhenium content changed as well: from 69.0 to 69.0–69.3 wt %. Pure salt (PAP) is produced from crude NH 4 ReO 4 (CAP) using …

Rhenium – A Tuneable Player in Tailored Hydrogenation Catalysis

Rhenium supported on various oxides was also studied for the hydrogenation of trans,trans-muconic acid, a dicarboxylic acid derived from lignin degradation – the hydrogenation was performed in methanol, so the obtained products were, in fact, the esters from the dicarboxylic acids containing two, one, or no carbon-carbon double bonds ...

Bismuth Oxides

7.3.2 Properties and applications. Bismuth is a brittle metal with a silvery white color. Its density is 9.7 g/cm 3, its melting point is 271°C, and the boiling point is 1564°C. Bismuth has a number of properties that are decisive for its various applications. It has a low toxicity for humans, and therefore is also called "green bismuth".

The Low-Temperature Mechanical Behavior of …

Rhenium and rhenium containing alloys are unique with high melting points, high moduli of elasticity and excellent high temperature mechanical properties. The most common rhenium containing alloys ...

Extraction of Rhenium and Osmium from Lead Technogenic …

containing 53–67% osmium from raw lead with an initial content of 0.0025–0.0050% in the slurry and ... lead sludge; metal recovery; black lead; rhenium-containing slag 1. Introduction The object of this study is lead sludge of the wet dust collection system of copper production. Rhenium and osmium as siderophile-chalcophile …

Recycling of rhenium-containing wire scrap | Request PDF

This paper pertains to the recycling of rhenium from tungsten–rhenium wire scrap generated in the manufacturing of W97Re3 wire. Rhenium from wire scrap, which contained 3.1–3.4% Re, was ...

Rhenium

Rhenium-containing catalysts were also recycled. The rhenium recycled from spent catalysts was either returned to the oil companies or to the catalyst producer for production of new catalysts in what is considered a closed-loop system. Import Sources (2018–21): Ammonium perrhenate: Kazakhstan, 27%; Poland, 16%; Canada, 15%; Germany, 15%;

Rhenium. USGS Publications Warehouse. John, David A.; Seal, Robert R.; Polyak, Désirée E.; Schulz, Klaus J.; DeYoung,, John H.; Seal, Robert R.; Bradley, Dwight C ...

Computational Design of a Louver Particle Separator for Gas …

The concept for the inertial separator includes the usage of a multiple louver array followed by a particle collector. The results of the study show a louver design can separate particles while not incurring large pressure loss. ... Improved Performance Rhenium Containing Single Crystal Alloy Turbine Blades Utilising PPM Levels of the …

Treatment of Rhenium-Containing Effluents Using …

Treatment of Rhenium-Containing Effluents Using Environmentally Friendly Sorbent, Saccharomyces cerevisiae Biomass. ...

Selective recovery of Rhenium from industrial leach solutions by

The precipitate formed is a polymetallic sulfide that contains rhenium, copper, arsenic, and bismuth. To recover rhenium from the precipitate, the separation of …

Discovery, properties and applications of rhenium and its …

Rhenium-based metathesis catalysts are generally prepared by incipient wetness impregnation of an oxide support, such as TiO 2, Al 2 O 3 or SiO 2 /Al 2 O 3. Their activity depends on the nature of the support; thus, ReO x /SiO 2 /Al 2 O 3 catalysts are known to be more active than Re 2 O 7 /Al 2 O 3 . Recycling of rhenium-containing …

Discovery, properties and applications of rhenium and

Metallic rhenium is a valuable metal characterized by parameters such as a density of 21.02 g/cm −3, a melting point of 3181 • C, a heat capacity of 0.137 J·g −1 ·K −1, a Young's ...

Rhenium

Element Rhenium (Re), Group 7, Atomic Number 75, d-block, Mass 186.207. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. ... Until quite recently no mineral containing rhenium combined with just a non-metal had ever been found. Not until 1992 that is, when a team of Russian scientists discovered rhenium ...

Discovery, properties and applications of rhenium and its …

After a historic excursus the basic properties of rhenium are summarized, followed by selected classes of its compounds (halides and oxyhalides, oxides, …

Study of Osmium Leaching Conditions from Copper Production

Research is conducted to determine the effect of production parameters on osmium extraction during leaching roasting cinders containing osmium and rhenium from copper production cakes with water, hydrogen peroxide and various oxidizing agents. The main goal is to maximize osmium extraction into the gas phase for subsequent …

Review of Methods for Obtaining Rhenium from Man-Made …

Methods for Obtaining Rhenium Pyrometallurgical Methods. Since rhenium is mainly found in molybdenum and copper concentrates following flotation, it is usually …

Review of rhenium extraction and recycling technologies from …

The reported methods of separating rhenium involved e.g. solvent extraction, ion exchange, adsorption, membrane techniques, and chemical precipitation. 2.2.1. Solvent extraction. Solvent extraction is a mature technology used in the …

Thermogravimetric Study of Oxidation Firing of Rhenium- and …

Oxidized rhenium is partly transferred into a gas phase together with osmium due to a lack of reagent binding rhenium oxide Re 2 O 7 into stable perrhenate compounds MeReO 4. On the thermogravimetric curve for firing a charge consisting of lead sludge and sodium nitrate, within the temperature range 250–500°C is reaction is recorded of ...

US3495934A

US3495934A US614406A US3495934DA US3495934A US 3495934 A US3495934 A US 3495934A US 614406 A US614406 A US 614406A US 3495934D A US3495934D A US 3495934DA US 3495934 A US3495934 A US 3495934A Authority US United States Prior art keywords rhenium extraction aqueous phase aqueous solutions Prior art date 1967 …

The Oxidation State of Rhenium and Its Role in Platinum-Rhenium

Oxidation State of Rhenium before Hydrogen Treatment. Yao and Shelef have presented evidence from chemisorption experiments which shows that prior to calcination the rhenium on an alumina support is probably present in two forms, a crystalline three-dimensional phase of Re 2 O 7, and a dispersed two-dimensional phase containing Re …

Complex electrochemical processing of the metallic wastes

A principal technological scheme for the complex electrochemical processing of the wastes from a rhenium-containing nickel superalloy in sulfuric acid electrolytes is developed on the basis of physicochemical studies. The process according to the technological scheme produces potassium perrhenate, calcium tungstate, nickel sulfate, …

Mineral separation protocol for accurate and precise rhenium …

In the next step, a Frantz Isodynamic Separator was used to separate magnetic (M) and non-magnetic (NM) sub-fractions by applying successively increasing currents with 15° side slope and 10° forward slope: 1) a 1.1 amp current to collect arsenopyrite (M1.1 fraction), 2) further treatment of the NM1.1 sub-fractions at a 1.7 amp …

Excited Nuclear States for Re-165 (Rhenium)

Abstract. This document is part of the Supplement containing the complete sets of data of Subvolume H 'Supplement to I/25 A-G' of Volume 25 'Excited Nuclear States' of Landolt-Börnstein - Group I ...

US3894866A

Rhenium values can be effectively recovered from very dilute solutions thereof, e.g. in the order of from 0.00001 to 0.1 gram of rhenium per liter, as well as from solutions containing up to 1.0 gram of rhenium per liter by precipitation utilizing a base metal precipitant, and by collecting the precipitated rhenium values on a collector metal that is subsequently …