Continuous Extraction of Nickel from Superalloy Scraps Using Zinc Circulation

Yagi, Ryohei; Okabe, Toru H.

doi:10.1007/s11663-017-0941-9

Cited by 10 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As part of fundamental research, the authors have been developing a technique to efficiently separate the Ni and Re present in superalloys without generating any waste solutions through a pyrometallurgical process that uses molten metal (collector metal) as a selective collector of Ni. [181][182][183] Figure 21 shows the flowchart of our process. In this process, a superalloy scrap is soaked in a molten collector metal at a high temperature to extract and separate the Ni from the superalloy, after which the collector metal is selectively distilled and separated to recover the concentrated Ni and Re.…”

Section: Recycling Of Rhenium From Scrapsmentioning

confidence: 99%

See 2 more Smart Citations

Review: Rhenium and its smelting and recycling technologies

Yagi,

Okabe

2024

International Materials Reviews

Self Cite

View full text Add to dashboard Cite

Rhenium is utilized as an additive to improve the high-temperature strength and stability of materials, such as nickel-based superalloys, which are employed in jet engine turbine blades, alloys for ultrahigh-temperature thermocouples, and platinum catalysts, which are used in oil refining. Currently, around 80% of rhenium demand is for superalloy production, and this demand has been increasing with the increase in demand for aircrafts. The abundance of rhenium in the earth's crust is only 1 ppb (10−9), which is less than those of platinum and gold. Owing to the rare and unevenly distributed nature of rhenium, there is the risk of supply disruption and rapid increases in its price. In this article, the recent situation of rhenium and its compounds are reviewed, especially with respect to their demand, distribution characteristics, smelting, and recycling. Some of the technologies recently developed for smelting and recycling rhenium are also introduced.

show abstract

Section: Recycling Of Rhenium From Scrapsmentioning

confidence: 99%

“…After pulverization to obtain a concentrated Re residue, the Re can be refined by oxidative roasting of the Re-concentrated powder. 183…”

Section: Recycling Of Rhenium From Scrapsmentioning

confidence: 99%