from ore with sulphuric acid is easily recovered
in a pure metallic form by the well known
process of solvent extraction. At the heart of
the process is the copper recovery reagent that
is used to selectively extract copper from the
aqueous leach solution.
The solvent extraction process as applied to metals extraction, can be defined as the selective transfer of metal ions from an aqueous phase via an organic phase to a second aqueous phase from which the desired metal can be recovered in a useable form.
The SX process can be represented by the following reversible reaction.
2RH (org) + Cu2+(aq) R2Cu (org) + 2H+ (aq)
|Appearance||Clear amber coloured liquid free from visible impurities.|
|Specific Gravity, 25oC||0.95-0.98|
|Viscosity cP at 25oC||Not more than 200|
|Flash point oC||Not less than 62 (PMCC)|
|Copper uptake, g/lt per vol %||0.56-0.59|
|Extraction Kinetics, App to Equilibrium at 25oC|
|15 sec||Not less than 85|
|30 Sec||Not less than 95|
|Strip Kinetics, App to Equilibrium at 25oC|
|15 Sec||Not less than 95|
|Copper Extraction isotherm point at 25oc|
|Organic||Not lesss than 4.2|
|Aqueous||Not more than 1.6|
|Copper strip Isotherm point at 25oC|
|Organic||Not more 2.1|
|Aqueous||Not less than 32.0|
|Copper Iron selectivity||Not less than 2000|
|Phase disengagement, Sec|
|Extract||Not more than 60|
|Strip||Not more than 60|
|Copper complex solubility at 0oC||At 24 hrs. No Precipitation|
|The performance is determined using standsrd quality control test methods and equipment. Further information is available on request.|
|The product is available in poly or epoxy lined 180 kg. (net) drums or IBC 's upon request.|
|Expert application advice and assistance in optimising the use of this product is readily available.|
|Product Data Sheet (pdf)|
CHEMOREX CP-160 is used in the
solvent extraction of copper.
This formulated product has a history of application in circuits that can benefit from a slightly weaker version of the CHEMOREX CP-150. In such circuits it may be more cost effective to use the weakened formulation in order to achieve higher net transfers of copper. The product retains its high chemical selectivity and stability.
The copper is easily recovered from the CHEMOREX CP-150 by stripping with high acidity copper sulphate electrolytes as typically found in electrowinning tankhouses
Longlight international Oct 2008