Investigating the effect of concentration and stirring time on copper extraction process from pregnant liquid solution (PLS), case study: Sungun copper mine

Abstract

Solvent extraction is regarded as one of the most applicable methods of extracting copper from pregnant liquid solution. The amount and quality of copper extraction are depend on various parameters including: the type of extractant, concentration and the stirring time. The current essay considers the amount of copper extraction from the pregnant liquid solution of Sungun copper mine in an approxiate concentration of 3% by chemorex cp150 as an extractant in 10% and 20% concentrations. In addition, the concentration of sulfuric acid in Sungun PLS is determined 4 gr/lit. eventually, the stripping process is done by sulfuric acid in 180 gr/lit concentration. the results indicate as the extractant concentration is increased, the amount of copper recovery from Sungun PLS gets more, while the long time of strring decreased the recovery.

Solvent Extraction of Yttrium from Rare Earths Concentrate Using Cyanex 272 and PC88A

“…The gotten data are organized in table (7). The last mentioned shown that with increasing the contact time from 4 to 12 min., the Y extraction efficiency will increase from 89.19 to 99.47% respectively as a result of the increase in the mass transfer from the aqueous phase to the organic phase, as increases the Y 3+ extracted into the organic phase which will result in an increase in the yttrium extraction efficiency (36) . So, the contact time of 12 min., was hence considered as the optimum value for almost complete extraction of Y from the prepared RECl 3 leach liquor.…”