(PDF) Investigation on ammonium perrhenate behaviour in

The extraction kinetics of rhenium(VII) or molybdenum(VI) with trialkyl amine (N235, R3N, R=C8–C10) dissolved in heptane were investigated by constant interfacial cell with laminar flow, which ...

Rhenium mineral resources: A global assessment

Rhenium (Re) is essential to modern transportation because of its key role in the aerospace and petrochemical sectors and has been assessed as critical due to its complex supply chains and limited options for effective substitutes. Efforts to estimate global Re resources are complicated by its production as a 'by-product of a by-product ...

Extractive metallurgy of rhenium: a review | Mining, …

Abstract. A variety of processing technologies exist for recovery from both primary and secondary sources of rhenium. Currently, there are no known primary …

Extractive metallurgy of rhenium: a review

Thus, it is imperative that the extraction and recovery of rhenium is as efficient as economically possible. Some possible research opportunities for the development of higher efficiency processes are suggested in the following paragraphs. The roasting of molybdenum concentrates containing rhenium is an elevated-temperature, exothermic …

Recent advances of rhenium separation and enrichment in …

The rhenium could also be stripped by sulfuric acid solution (4 mol/L). In 2010, Jiang et al. prepared a novel trialkyl amine (N235) extractive resin and studied its extraction behavior of rhenium and molybdenum [44]. The influencing factors such as extraction time, concentrations of Re and Mo, pH of the extraction medium were …

(PDF) Review of rhenium extraction and recycling …

Recycling rhenium from spent alloys and catalysts is a multi-step process combining pyrometallurgical and hydrometallurgical …

Thermodynamics of Solvent Extraction of Rhenium(VII) with …

At temperatures from 278.15 to 303.15 K, equilibrium molalities of ReO4 − were measured in the aqueous phase containing NH4Cl as supporting electrolyte at ionic strength from 0.1 to 2.0 mol · kg−1 and at constant initial molality of extractant. The standard extraction constants K 0 at various temperatures were obtained by methods of …

Extractive metallurgy of rhenium: a review | Mining, …

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 …

Rhenium extraction from dilute solution by

Rhenium extraction from dilute solution by precipitation flotation and oxidative volatilization techniques. Author links open overlay panel Guihong Han a b 1, ... Rhenium (Re), as a critical refractory metal, is widely used in aerospace superheat alloys [1], [2], petroleum smelting catalysts [3], etc. As a highly dispersed rare metal, natural ...

Extractive metallurgy of rhenium: a review

firmed by Singh et al., who ran a 250-L rhenium extraction pilot plant using it. Results showed that 98% of the aqueous rhenium was recoverable, and allowed for the production of a

Chemical Procedures for Rhenium Extraction from

Rhenium–osmium geochronometry for samples with low Re and complex matrices requires improved Re extraction methods. Here, we investigate plausible controls on efficiency and efficacy of Re ...

Review of technologies for rhenium recovery from

The base mineral raw materials for recovery of rhenium in Kazakhstan are by-products of copper, lead and uranium production. In pyrometallurgical processing of …

[PDF] Review of rhenium extraction and recycling …

Review of rhenium extraction and recycling technologies from primary and secondary resources. Leiting Shen, F. Tesfaye, +2 authors. P. Taskinen. Published 15 …

Extraction of Technetium and Rhenium with Ionic Liquid

The extraction system is a potential application for the selective separation and extraction of rhenium from simulated radionuclide liquid waste through adjustments to the acidity concentration.

Comprehensive Study on Extraction of Rhenium with …

The enperimental condition for rhenium extraction with acetone was studied comprehensively. The effect of amount of extracting reagent,alkalinity of the system,the extracting time on the extraction rate of rhenium and whether acetone should be washed by NaOH after extraction were studied. The optimized experiment condition provides …

Rhenium price, occurrence, extraction, uses | Institute for …

Rhenium price, occurrence, extraction, applications. rhenium is a chemical element with the element symbol Re and the atomic number 75. In the periodic table of the elements it is in the 7th subgroup (group 7) or manganese group. It is a very rare, silver-white, shiny, heavy transition metal. Alloys with rhenium components are used in aircraft ...

Review of Methods for Obtaining Rhenium from Man-Made …

A literature review on the production processes of rhenium by pyrometallurgical (roasting, smelting, distillation) and hydrometallurgical (leaching, extraction, reextraction, …

Rhenium extraction from pressure oxidative leaching …

After that, to investigate the selective extraction of Re over Mo (i.e., as an impure of MoO 3) and the other metal elements (e.g., Fe, Cu, S, Ca, Ni, Co, etc.), the leaching solution obtained from oxidative pressurize leaching was used for SX processing.In order to this process, to decrease the amount of Mo and the other metals in the leaching …

Review of rhenium extraction and recycling technologies …

In this paper, rhenium extraction and recycling technologies from primary and secondary resources are critically classified and reviewed. Rhenium is primarily produced as a by-product in molybdenum, copper, lead and uranium production from the concentrates and ores. Rhenium is extracted from roasting fume and dust, leaching residue, and aqueous ...

Efficient extraction of rhenium through demulsification of …

Rhenium has important applications in metallurgy, military, aviation, chemical, and petrochemical industries and related fields. Because the average concentration of rhenium in the Earth's crust is just one part per billion (ppb), it is necessary to research the separation and extraction of rhenium from its associated minerals or …

Review of technologies for rhenium recovery from

Extraction was carried out at ambient temperature, time of contact and settling of phases — 5 min, the number of steps — 1. Recovery of rhenium into the extract decreased from 92 to 29% with the increase of phase ratio, its concentration in extract increased from 156 to 1000 mg/dm 3. Uranium is not extracted.

Materials | Free Full-Text | Extraction of Rhenium and …

Lead sludge from copper production is a source of rare metals, such as rhenium and osmium, whose content reaches 0.06–0.08% and 0.0025–0.0050%, respectively. The base of the sludge consists of lead sulfate. A method of reductive smelting of lead sludge from copper smelting production at 1000–1100 °C has been developed. …

Recovery of Molybdenum & Rhenium From Molybdenite …

Electrooxidation in the prototype cell resulted in 84 to 97 pct Mo and Re extraction with a corresponding energy consumption of 9 to 13 kwhr/lb Mo extracted. As part of the effort to improve the Nation's minerals technology base, the Bureau of Mines investigated a process to extract molybdenum and rhenium from molybdenite …

Revolutionizing Mining with Florhenium

Environmentally safe and green solution for rhenium extraction. Significantly reduces energy consumption compared to conventional mining methods. Very cheap production costs compared to traditional mining techniques. Utilizes plant hyperaccumulators to concentrate rhenium, making it a renewable raw material.

Separation of molybdenum (VI), rhenium (VII), tungsten …

Rhenium's maximum extraction was 93.8 % at pH = 0.5, [TBP] = 2.54 mol/L and, organic to aqueous phase ratio of 2:1, and molybdenum extraction under these conditions was nearly 40 % on average.

Review: Rhenium and its smelting and recycling technologies

Abstract. Rhenium is utilized as an additive to improve the high-temperature strength and stability of materials, such as nickel-based superalloys, which are …

Rhenium(VII) solvent extraction with mixtures of tertiary …

Rhenium's maximum extraction was 93.8 % at pH = 0.5, [TBP] = 2.54 mol/L and, organic to aqueous phase ratio of 2:1, and molybdenum extraction under these conditions was nearly 40 % on average. The results obtained from experiments using Minitab software showed that there is a dependence between pH, O/A phase ratio and …

REVIEW OF METHODS FOR OBTAINING RHENIUM …

In the work [19], rhenium and molybdenum were extracted using an amidetype extraction agent A101 by - S. G. Yu et al. [20]. In the work [21], synergistic extraction with a primary amine and neutral phosphorus esters was used to …

[PDF] Technetium(VII) and Rhenium(VII) Extraction by a …

The extraction capacity for Re(VII) was measured and more than 37 mM Re(VII) can be extracted by 0.1M MIDOA. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 217,485,156 papers from all fields of science ... Technetium(VII) and Rhenium(VII) Extraction by a New Diamide Reagent, 2,2' …

Extractive metallurgy of rhenium: a review

Rhenium recovery from pyrometallurgical effluent streams ... O.N., and Smirnov, N.S., 2004, "Associated rhenium extraction in complex processing of productive solutions of underground uranium leaching," Chemistry for Sustainable Development, Vol. 12, …

Leaching kinetics, separation, and recovery of rhenium

The rhenium extraction performance of N263 was investigated by the rhenium equilibrium curve and NaSCN concentration. It was found that the N263 concentration was the main factor affecting rhenium ...

Liquid-Liquid Extraction of Rhenium(VII) from an Acidic …

Isodecanol and 80% Anysol-150 to extract rhenium from a liquor containing 260-280 mg/L Re and 80-90 mg/L Mo. Srivastava et al. (2015) addressed the extraction of rhenium(VII) from a HCl solution ...

Rhenium extraction from dilute solution by precipitation …

DOI: 10.1016/j.jece.2023.111457 Corpus ID: 265170265; Rhenium extraction from dilute solution by precipitation flotation and oxidative volatilization techniques @article{Han2023RheniumEF, title={Rhenium extraction from dilute solution by precipitation flotation and oxidative volatilization techniques}, author={Guihong Han and …

Hydrometallurgical Extraction of Molybdenum and Rhenium …

Herein, the leaching of molybdenum and rhenium from the molybdenite roasting flue dust in H 2 SO 4 was studied. The parametric studies showed that leaching performed at a pulp density, 10 wt./vol.%; H 2 SO 4 concentration, 1.0 M; temperature, 90 °C; and time, 90 min was sufficient to yield 96% molybdenum and 93% rhenium. The …

Hydrometallurgical Extraction of Rhenium from Mo-Bearing …

Rhenium concentration in scrubbed liquor remains significantly less (30–200 mg/L) than Mo(VI) concentration []; however, the high economic value of rhenium over molybdenum is more attractive to the metallurgists in recent time.Flue-dusts' leaching in water/dil. H 2 SO 4 followed by ion exchange and solvent extraction are the major …