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 Separation Processes

Extracting lithium without roasting

By Paul Grad |

Lithium Australia NL (Perth, Western Australia; lithium-au.com) has generated 99.8% (battery-grade) lithium carbonate from lithium-bearing silicates, such as spodumene, using its Sileach process — a hydrometallurgical process that does not require an energy-intensive roasting step. The company says Sileach has the ability to process contaminated spodumene concentrates and allows the recovery of components other than lithium as byproducts, including silicon and aluminum. The company’s spodumene originated from Pilbara Minerals Ltd.’s (Perth; www.pilbaraminerals.com.au) Pilgangoora lithium-tantalum project, located 120 km from Port Hedland in Western Australia’s Pilbara region. Sileach involves mixing the lithium-bearing material with a source of fluoride, such as CaF2 or HF in the presence of sulfuric acid at 90°C for about 3 h to extract about 80% of the lithium. Li2CO3 of more than 98% purity is obtained by raising the pH of the pregnant liquor solution to 4 to precipitate aluminum and fluoride from solution, with a subsequent softening step to remove excess CaSO4, followed by evaporation and precipitation of Li2CO3. The addition of halogens, such as fluoride, is essential to the operation of Sileach. The halogens attack…
Related Content
Australian minerals shipped to South Korea
Battery metals producer Australian Mines (Perth, Western Australia; www.australianmines.com.au) is scheduled to export the largest sample of battery-grade cobalt and…

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