Recycling of rhenium-containing wire scrap

Highly Active Rhenium-, Ruthenium-, and Iridium-Based Dichalcogenide Electrocatalysts for Oxygen Reduction and Oxygen Evolution Reactions in Aprotic Media

“…The recorded XRD data were matched and indexed with patterns for the pure compounds extracted from the powder diffraction database by the International Centre for Diffraction Data (ICDD). The patterns generally showed a good match to the theoretical reflections as well as data in the literature and no evidence of impurity phases, with the exception of an unidentified peak at 24°, 2θ, for ReSe 2 . − The pattern of ReTe 2 deviated from the crystallographic data for the polymorphs reported in the literature, − but no obvious signs of impurities, such as the initial elemental reagents and their respective oxides, were found. − It is possible that a new polymorph of ReTe 2 was made in these conditions . This possibility will be further explored in follow-up reports.…”

Recovery of rhenium from a molybdenite roaster fume as high purity ammonium perrhenate

“…It is clear that APR could be precipitated from 29.9 g/L Re (in 30% ammonium hydroxide) as the pH is decreased to pH b 9.5 leaving Mo in the liquor. Although APR is the preferred Re salt which can be recovered from an ammonium hydroxide liquor (Singh Gaur et al, 2015) at least 30 g/L Re as determined by Stabcal modelling is required for an efficient recovery of Re. Activated carbon adsorption could not produce a high Re liquor compared to solvent extraction as shown in our previous study (Seo et al, 2012).…”

“…Typically, copper or molybdenum sulphide concentrates recovered from flotation circuits contain 50-100 g/t (ppm) Re (Abisheva et al, 2011). Rhenium then deports during Cu smelting or molybdenite roasting mainly in slimes, flue dusts, or wet scrubbing acid solutions (Kang et al, 2013;Lan et al, 2006;Seo et al, 2012;Shariat and Hassini, 1998;Singh Gaur et al, 2015;Zagorodnyaya et al, 2010).…”

Computationally Designed Perrhenate Ion Imprinted Polymers for Selective Trapping of Rhenium Ions

“…Rhenium is a scarce metal with a high melting point, high thermal resistance, very high tensile strength, high modulus of elasticity, and resistance to corrosion. These unique physical properties have resulted in its widespread use in rapidly advancing fields such as pharmaceuticals, marine, aviation, aerospace, nuclear technology, and petrochemicals. − Rhenium recycling is of great interest due to its scarcity and the growing demand for superalloys in high-tech engines and turbines. This interest is aided by the fact that many governments consider rhenium as an element of strategic military importance and are investing in recycling research to create secure rhenium resources. − Secondary rhenium sources produce additional new rhenium to the market as rhenium metal, ammonium perrhenate powder, or as perrhenic acid solutions. , Moreover, the increasing calls to move industrial processes toward the philosophy of a circular economy and green industrial processes makes the process of recycling even more interesting.…”