Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1994-05-26
1995-10-10
Lithgow, Thomas M.
Classifying, separating, and assorting solids
Fluid suspension
Liquid
209166, 209170, B03D 102, B03D 110, B03D 124
Patent
active
054563623
ABSTRACT:
A process for the flotation of coarse potash ore fractions in an aqueous brine containing frother that comprises: (a) using a column flotation device in which air bubbles are generated by a sparger that utilizes high intensity shearing to mix and disperse air into brine containing frother; (b) removing a portion of the suspension at another point in the direction of flow of the suspension to regulate the upward flow rate of the suspension past the point where the air is dispersed into the suspension and thereby reducing fine particles entrainment in the froth product. The suspension can be conditioned with an aqueous composition comprising a hydrocarbon extender oil and a substantially saturated long chain primary mine, optionally comprising an acid, such as a mineral acid or carboxylic acid, to emulsify the oil in the composition, or can be conditioned with an aqueous composition comprising a long chain primary amine having an iodine value ranging from about 20 to about 70 cg/g.
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Laskowski Janusz S.
Wang Qun
Fennelly Richard P.
Lithgow Thomas M.
Morris Louis A.
The University of British Columbia
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