Efficient Metal Recovery with CYANEX® Reagents
Well-suited for a variety of metal separations, CYANEX® reagents help solvent extraction operations boost recovery and improve metallurgical outcomes. Discover how these innovative reagents can address your specific metal extraction challenges.
Nickel/cobalt
CYANEX® 272 extractant has proven to be the reagent of choice for the separation of cobalt from nickel from both sulfate and chloride media. Metals are extracted through a cation exchange mechanism from weakly acidic solutions. Although CYANEX® 272 extractant is selective for cobalt in the presence of nickel, a variety of other cations can also be extracted depending upon the solution pH. CYANEX® 272 exhibits high cobalt/magnesium and cobalt/calcium selectivity and is selective for zinc in the presence of cobalt, making it a versatile reagent.
Key Benefits:
- Highly selective for cobalt over nickel from sulfate and chloride media
- Selective for zinc in the presence of calcium and cobalt
- Excellent temperature and hydrolytic stability
- Fully miscible with common aromatic and aliphatic diluents
- Demonstrated performance with greater than 30 years of commercial application
Molybdenum
CYANEX® 600 is a phosphinic acid extractant developed to recover molybdenum from acidic solutions. Traditionally, molybdenum has been recovered through flotation and roasting; however, significant amounts of molybdenum are also found in smelter dust, spent catalysts, roaster off-gases, recycled alloys, and as a minor species in some copper raffinates. CYANEX® 600 is a highly selective extractant capable of recovering molybdenum from both high- and low-grade sources.
Key Benefits:
- High selectivity against anionic species, including sulfate, chloride, arsenic and metals such as iron, aluminum, manganese, copper, cobalt, nickel, chromium, and rhenium
- Excellent hydrolytic stability
- Fast kinetics
- Good phase disengagement properties
Lithium
CYANEX® 936P is a lithium solvent extraction reagent designed for optimal physical and metallurgical performance. CYANEX® 936P extracts lithium under weakly basic conditions via a cation exchange mechanism. Lithium can be separated from sodium, potassium, and boron with high selectivity from either chloride- or sulfate-based solutions. Potential applications include the recovery of lithium from salar, oilfield, or geothermal brines as well as battery recycling solutions.
Key Benefits:
- High selectivity for lithium over boron, sodium, and potassium
- High lithium recovery rate of greater than 98% demonstrated
- Optimized physical performance
- Supports a rapid and continuous lithium recovery process
Learn more about lithium solvent extraction
Rare Earth Elements
CYANEX® 572 extractant is formulated for the recovery and purification of rare earth elements. CYANEX® 572 has an extraction strength profile that allows efficient extraction of heavy rare earth elements while allowing back extraction/stripping to utilize lower strip acid concentrations. CYANEX® 572 has been proven as an effective extractant for the separation of individual rare earth elements.
Key Benefits:
- Selective for heavy rare earth metals
- Acid savings due to lower strip acid requirements
- Good phase separation characteristics
- Integrated with MINCHEM+™ modeling for the design and optimization of rare earth solvent extraction circuits
Other Applications
CYANEX® 923 is a liquid, phosphine oxide extractant suitable for solvent extraction recovery of both organic and inorganic solutes from aqueous solutions. Potential applications include cadmium removal from phosphoric acid, impurity removal from copper electrolytes, and the extraction of uranium from various mineral acids. CYANEX® 923 mixes easily with common hydrometallurgical solvents and offers higher loading capacity, improving extraction efficiency and effectiveness compared to TOPO-based extractants.
Key Benefits:
- Liquid extractant fully miscible with common hydrometallurgical diluents
- High temperature stability and resistant to hydrolysis
- Low aqueous solubility
Battery Material Recycling Solutions
