Rare earth separation extractants
Rare earth extractants for grouping and single-element separation in chloride and sulphate systems, from mixed rare earth feed to polishing stages.
Grouping and separation stages are specified from the element distribution and the number of separation stages available.
Model lines
Rare earth extractant models
P204
Di-(2-ethylhexyl)phosphoric acid (D2EHPA / HDEHP)
Phosphoric acid ester extractant used as the first impurity-removal step in laterite nickel ore circuits.
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P507
2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester
Non-ferrous metal extractant for copper, zinc, cobalt-nickel, cadmium, gold-silver, platinum group metals and rare earths.
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Where the reagent sits in the circuit
01
Grouping
Mixed rare earth feed is split into light, medium and heavy groups before single-element separation.
02
Separation cascade
P507 and P204 carry the cascade, resolving adjacent elements with a controlled phase ratio.
03
Product strip
Each element is stripped and precipitated as an oxalate or carbonate for calcination.
Resources
Notes on this circuit
Questions
Before you specify
What information do you need to recommend a reagent?
The feed assay (metal tenor and main impurities), acidity, the stage where the reagent will work, and the target strip liquor or product specification. A flowsheet sketch helps but is not required for a first recommendation.
Can one model cover several metals?
Some phosphoric ester and phosphinic acid reagents work across nickel, cobalt, vanadium and rare earth circuits, but the loading window is set per application. A model that suits one separation may need a different acidity or modifier in another.
How are samples shipped?
Sample quantity and packing are agreed against the trial scope, then shipped with handling information. Documentation follows the destination country and the carrier requirements.
Send your feed data
Include the rare earth tenor, acidity and the main competing ions. A model recommendation follows from those values.
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