I D
× COMMENTARY
Digitalization Game ChangersGame Changers
The technologies associated with the Industrial Internet of Things, and…
COVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
ANG fueling station Ingevity (North Charleston, S.C.; www.ingevity.com) has completed…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILESOLIDS PROCESSINGEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More SHOW PREVIEWS

Comment

Simpler, more selective scandium recovery

By Mary Page Bailey |

Rare-earth elements (REEs), such as scandium, are in high demand, but it is often difficult to economically recover and extract them. Now, II-VI Inc. (Saxonburg, Pa.; www.ii-vi.com) has developed a patent-pending process utilizing selective ion recovery (SIR) that enables highly selective extraction of scandium and other targeted REEs from streams with concentrations as low as 6 ppm. The process is also more economical than other REE extraction methods, since it eliminates the solvent-extraction and ion-exchange steps, as well as the processing and disposal costs associated with handling large volumes of solvents and reagents, says Shailesh Patkar, senior corporate development manager at II-VI. “Conventional extraction methods also face practical issues with rheology, phase separations and interference from competing ions, which can result in low yields,” adds Patkar, comparing SIR to a chemical “magnet” that separates desired REEs from other metals, even in the presence of undesirable elements, such as iron. In the SIR method, an acidic slurry containing scandium, typically generated in the production of titanium, aluminum, nickel, tungsten or other metals, is passed through a series of columns containing II-VI’s selective…
Related Content
Recovering rhenium photochemically
Professor Hisao Hori and his research group at Kanagawa University (Hiratsuka City, Japan; www.kanagawa-u.ac.jp) have reported what is said to…
Chementator Briefs
ANG fueling station Ingevity (North Charleston, S.C.; www.ingevity.com) has completed construction of a fueling station for low-pressure adsorbed natural gas…

Mettler Toledo

Tunable Diode Laser Spectroscopy in Critical Applications

Accurate and continuous O2 determination plays a pivotal role in achieving safety and process reliability in a wide range of manufacturing processes. Harsh process conditions and maintenance requirements of sampling and conditioning systems can present…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Reduce Explosion Risk in 2 Seconds with In Situ Oxygen Analysis
Tunable Diode Laser Spectroscopy in Critical Applications
Non-Contacting Gas Sensors Minimize the Risk of Corrosion to Plant Equipment.
5 ways to Optimize Production of Polymers and Intermediate Petrochemicals
7 Ways to Achieve Process Safety in Chemical Production

View More

Live chat by BoldChat