ID
× COMMENTARYCOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILESOLIDS PROCESSINGEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More SHOW PREVIEWS

Comment PDF Environment, Health, Safety & Security

Chementator: Selective flotation

By Chemical Engineering |

The presence of arsenic minerals, such as enargite and tennantite, in some copper-bearing ore bodies, can be a problem for those wishing to recover the copper. When delivering copper concentrates to smelters in Australia, for example, miners are subjected to substantial penalties if their shipments contain high levels of arsenic. Researchers at CSIRO Minerals (Melbourne, Australia; edlinks.chemengonline.com/5827-540) have developed a flotation process that separates arsenic minerals from copper ores, which could make some copper deposits economically viable. Without disclosing details, CSIRO says the process involves adding oxidizing and reducing agents to adjust the electrochemical potential of the “pulp” (ground up minerals in water), and sometimes using N2 instead of the usual air for the flotation process. This allows the arsenic to be selectively removed from the pulp. Early removal of arsenic avoids dispersing it through downstream processing of concentrate, says CSIRO.   Click here for a full pdf version of the Chementator Section
Related Content
Fight formaldehyde litigation
(From November 2011, Letters) Perhaps enough has been written about the questionable science underlying recent U.S. government pronouncements concerning formaldehyde…
Toxicity under the microscope
Last month, two significant cracks were found in the cornerstones of conventional thinking about how chemicals in the environment make…

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
5 ways to Optimize Production of Polymers and Intermediate Petrochemicals
7 Ways to Achieve Process Safety in Chemical Production
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

View More

Live chat by BoldChat