BENEFICIATION OF HIGH CARBONATE PHOSPHATE ROCK

BENEFICIATION OF HIGH CARBONATE PHOSPHATE ROCK

The amount of carbonate mineral impurities is reduced in aqueous phosphate rock slurry by (a) conditioning the slurry with an effective amount of CO2, (b) adding an effective amount of an anionic collector to the slurry and (c) subjecting the slurry to a froth flotation process whereby the carbonate...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MEHROTRA, VIKRAM P, SIVARAMAKRISHNAN, KALLIDAIKURICHI N
Format: Patent
Sprache:eng ; fre
Schlagworte:
DIFFERENTIAL SEDIMENTATION
FLOTATION
MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS
PERFORMING OPERATIONS
SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS
TRANSPORTING
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Beschreibung
Zusammenfassung:The amount of carbonate mineral impurities is reduced in aqueous phosphate rock slurry by (a) conditioning the slurry with an effective amount of CO2, (b) adding an effective amount of an anionic collector to the slurry and (c) subjecting the slurry to a froth flotation process whereby the carbonate mineral impurities are concentrated in the froth. The CO2 acts to depress flotation of phosphate minerals relative to the carbonate mineral impurities.