Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1999-07-12
2000-10-31
Lithgow, Thomas M.
Classifying, separating, and assorting solids
Fluid suspension
Liquid
209167, B03D 102, B03D 1002, B03D 101
Patent
active
061388351
ABSTRACT:
A method for recovering petalite from a mixture comprising petalite and feldspar minerals comprises the steps of forming an aqueous slurry of the mixture and adding to the slurry a depressant selected from the group consisting of alkaline earth metal chlorides, alkali metal chlorides, and mixtures thereof. Next, a collector comprising a quaternary ammonium salt is added to the slurry. The slurry is then subjected to a froth flotation process and petalite that is substantially free of feldspar minerals is selectively recovered from the flotation process.
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"Flotation of petalite from pegmatite rock" M.T. Lyyra; H.R. Laapas; K.G.H. Heiskanen; Department of Materials Science and Rock Engineering, Helsinki University of Technology; A.I. Roitto; Fylharaisio Corporation, Raisio, Finland (1987).
Concentration of Ores or Rare and Precious Metals, Nedra 1987, pp. 129-132 (written in Russian).
Bulatovic Srdjan
Jessup Timothy
Avalon Ventures Ltd.
Lithgow Thomas M.
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