ID
× COMMENTARYCOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
New adsorbent Last month, BASF SE (Ludwigshafen, Germany; www.basf.com) launched…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEENGINEERING PRACTICEENVIRONMENTAL MANAGEREQUIPMENT & SERVICESFOCUS
ConvalFocus on Valves
These versatile, modular valves enable quick installation More than 2,500…
NEW PRODUCTS + Show More

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…

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
How can accurate pH measurement prevent power plant corrosion?
Five Reasons Why Chemical Companies Are Switching to Tunable Diode Laser Analyzer Technology
Simplify sensor handling and maintenance with ISM
Three reasons to measure pH in-line
ABB Ability™ technology to transform BASF rotating equipment into intelligent machinery and improve uptime and reliability

View More

Live chat by BoldChat