ID
× COMMENTARYCOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
RE-free magnets Tetrataenite (L10-FeNi) is a promising alternative to rare-earth-…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEENGINEERING PRACTICEEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More SHOW PREVIEWS

Comment uncategorized

Extracting platinum metals

By Paul Grad |

The traditional method for recovering platinum-group metals (Pt, Pa, Ir, Os, Rh, Ru and Au) is not economically viable in the case of low-grade deposits, but researchers from the Western Australian School of Mines, Curtin University (Perth; www.curtin.edu.au) and the Dept. of Processing Engineering, Stellenbosch University (Matieland, South Africa; www.sun.ac.za) may have found a cost-effective alternative. One of the researchers, professor Jacques Eksteen of Curtin University, says the traditional smelting process can be replaced with low-cost leaching. He said: “We found that if we could recover economic levels of platinum metal using heap leaching, then we were able to recover it from solution.” Platinum-group metals form a complex range of 30 to 40 minerals, each with a different resistance to leaching, making it difficult to find a unique solution for all deposits, explains Eksteen. Once leached, the metals are adsorbed from solution on to activated carbon, he says. The next step is to elute (wash with solvent) metals from the carbon in a concentrated form so they can be released one by one. The researchers investigated the feasibility of eluting platinum- and palladium-cyanide complexes from activated carbon with the well-known…
Related Content
Extracting lithium without roasting
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…

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
Trinseo Digitizes Control System Migration Projects to Achieve Fast ROI
Purdue University Saves $400,000 Annually with Local Vacuum Networks
Bag filter Housings/Vessels
Innovative Backwashable Media Filter
Automated Vertical Tower Filter Press

View More

Live chat by BoldChat