Phosphate flotation with tribasic acids

Details Phosphate flotation with tribasic acids Phosphate flotation with tribasic acids

1980-07-14

1981-08-04

Halper, Robert

Classifying, separating, and assorting solids

Fluid suspension

Liquid

B03D 102

Patent

active

042820898

ABSTRACT:
A phosphate ore flotation process subjects a phosphate ore containing silica and silicates to froth flotation in the presence of a collector, said collector being a C.sub.54 high molecular weight tribasic acid comprising three carboxylic functional groups, recovering the phosphate concentrate from the overflow, and removing the separated silica and silicates in the underflow. The tribasic acids should be used in conjunction with fuel oil, not only to reduce the reagent consumption, but also to increase the grade and recovery of phosphate concentrate. The selectivity of this collector is so great that an acceptable phosphate rock concentrate can be obtained from the phosphate ore in a single anionic circuit.

REFERENCES:
patent: 2165268 (1939-07-01), Vogel-Jorgensen
patent: 3032196 (1962-05-01), Sollins
patent: 3779380 (1973-12-01), Bishop
patent: 4052425 (1977-10-01), Leonard
patent: 4069235 (1978-01-01), Suzuki
patent: 4081363 (1978-03-01), Grayson
patent: 4139482 (1979-02-01), Holme
Chem. Abst. 64, 1966, 6158h.
Encycl. of Chem. Tech. Dicarboxylic Acids, 110, 111, 1964.
Chem. Abst. 85, 1976, 7806t.

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