Hydrometallurgical processes for rhenium recovery from copper industrial waste [20,21], spent reforming catalysts [9], superalloys [11], and other multicomponent refractory alloys [8] have been ...

Rhenium has an extremely high melting point (3180 °C), only lower than carbon (3500 °C) and tungsten (3422 °C) of all the elements. Rhenium has a heat-stable crystalline structure and excellent ductility from freezing to very high temperatures, making it exceptionally resistant to heat and wear (Millensifer et al., 2014, John et al., 2017).

Furthermore, global extractable primary rhenium resources are predicted to deplete within 130 years. In this paper, rhenium extraction and recycling technologies from primary and secondary ...

Rhenium can be recovered together with tungsten, molybdenum, platinum and other valuable metals from spent catalysts, which contain about 0.3 wt% Re. …

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...

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.

Rhenium is geologically scarce in the Earth's crust, with identified Re enrichment sufficient for recovery currently limited to three major deposit types: …

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.

Four columns of activated carbon operated in series were able to achieve 96% average rhenium recovery over 3 to 4 days. The effluent from the final column averaged 0.025 mg/L Re. The purpose of this study is to investigate the recovery of rhenium associated with copper leach solution using resin ion exchange.

Rhenium is a precious metal found in the periodic table in the transitional metals group. This metal is a byproduct of refining molybdenum and copper ores. As an investment opportunity, rhenium is one of the top ten most expensive metals known, surpassing silver. In this article we will discuss rhenium as an element, a byproduct and an investment.

Kazakhstan is a major producer of non-ferrous metals. The production of heavy metals is generally based on pyrometallurgical processes resulting in the generation of by-products which contain rare metals, in particular rhenium. The base mineral raw materials for recovery of rhenium are solid and liquid by-products of copper, lead and …

Commercial rhenium in the U.S. today is obtained from molybdenum roaster-flue dusts obtained from copper-sulfide ores mined in the vicinity of Miami, Arizona and elsewhere in Arizona and in Utah. Some molybdenum contains from 0.002% to 0.2% rhenium. More than 150,000 troy ounces of rhenium are now being produced yearly in the United States.

Rhenium is traditionally obtained as a by-product of roasting and hydrometallurgical treatment of molybdenum and copper concentrates (Askari Zamani et al., 2005; Tagami and Uchida, 2010). However, the scarcity of raw materials and the ever-growing demand for Re require a swift improvement of existing technologies and a …

Rhenium production from copper and molybdenum sulphides involves the use of a pyrometallurgical process. In traditional pyrometallurgy processes, gases emi …

These alloys found important applications in industry that resulted in a great demand for the rhenium produced from the molybdenite fraction of porphyry copper ores. Important uses of rhenium have been in platinum-rhenium catalysts, used primarily in producing lead-free, high-octane gasoline and in high-temperature superalloys used for jet ...

The final content was 26.1–27.3 g/l and 0.35–0.41 g/l for Re and Mo, respectively. Rhenium was concentrated on the second step up to 18–19 times and in comparison with the initial solutions—up to 366–380 times. The pure perrhenate ammonium salt was recovered from the second eluate by crystallization.

Copper smelting open-circuit (CSO) dust contains various valuable metals, such as copper, lead, and zinc, as well as undesirable toxic elements such as arsenic. Thus, the comprehensive recovery of valuable elements from CSO dust is highly significant from both economic and environmental perspectives. In this review, …

Molybdenum resources around the world are mainly associated with porphyry copper ores. Molybdenite (MoS 2) is the main Mo mineral that has rhenium in its crystal lattice.

Rhenium is one of the rarest elements in Earth's continental crust; its estimated average crustal abundance is less than 1 part per billion. Rhenium is a metal that has an extremely high melting point and a heat-stable crystalline structure. More than 80 percent of the rhenium consumed in the world is used in high-temperature superalloys, especially …

Rhenium is extremely expensive—among the ten most expensive metals known. At times, its price exceeds $10,000 per kilogram. As a result, recovery of the rhenium content of used alloys, e.g. from worn-out aircraft turbines and from other rhenium-containing compounds, is desirable. BRIEF REFERENCE TO THE PRIOR ART.

The ionic liquid extracted more than 77% of the rare-earth elements from fresh material, and it extracted an even higher percentage (97%) from weathered ash that had spent years in a storage pond ...

the free market price for 99.99% pure rhenium metal powder. is approximately $2,000/kg (Polyak, 2011). Due to the lack of primary rhenium deposits, the method. with which it is processed is directly related to the method. with which the minerals it is associated with are produced, typically copper and molybdenum.

Download Citation | Ion exchange recovery of rhenium from copper leach solutions using weakly basic anion exchange resins | Rhenium is a valuable and extremely rare chemical element with unique ...

Molybdenum and copper ores are the sole economically viable mineral sources of rhenium, which is obtained as a by-product of the metallurgical processing of these ores; specifically, the rhenium component is oxidized to volatile Re 2 O 7 in the flue dusts and then collected in aqueous solution in the form of perrhenate ion (ReO 4 −) [6], …

There is current interest in recovering rhenium from solutions produced as a result of copper heap and stockpile leaching. Copper-bearing leach solutions typically contain rhenium at concentrations near 1 mg/L. This work has demonstrated that rhenium can be efficiently extracted from these solutions using weakly basic anion exchange resins.

Extractive metallurgy of rhenium: a review. 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, …

1. Introduction. Rhenium, which is a minor metal in the Earth's crust and has a high melting point (3180 °C, second only to that of tungsten), has vital applications in industry.Rhenium used in superalloys for turbine blades for aircraft and thermal power plants accounts for 70% of total rhenium consumption, and rhenium in petroleum …

An alternating way for the production of Re is recovering rhenium (usually in the form of ReO 4 −) from the wastewater generated by copper and molybdenum smelting [4]. Nevertheless, capturing ReO 4 − from wastewater suffers from many adverse factors such as low concentration of ReO 4 −, strong acidic surroundings, and various …

An alternating way for the production of Re is recovering rhenium (usually in the form of ReO 4 −) from the wastewater generated by copper and molybdenum smelting [4]. Nevertheless, capturing ReO 4 − from wastewater suffers from many adverse factors such as low concentration of ReO 4 −, strong acidic surroundings, and various competing ...

The rising cost of Re over the past 5–6 years has rendered this deficiency in precious metal recovery particularly significant. Right now, catalyst grade ammonium perrhenate (typically the form in which recovered Re is returned to catalyst manufacturers' specifications) is valued at approximately US$3700/kg. Putting this in context, using ...