Process for enrichment, by flotation, of phosphate ores with gan

Details Process for enrichment, by flotation, of phosphate ores with gan Process for enrichment, by flotation, of phosphate ores with gan

1974-10-29

1977-02-15

Halper, Robert

Classifying, separating, and assorting solids

Precedent preparation of items or materials to facilitate...

Selective differentiation

209167, B03B 104

Patent

active

040081516

ABSTRACT:
A process for dressing phosphate ores with gangues containing carbonates, by flotation, wherein the phosphates and carbonates contained in the ore to be treated are separated by subjecting the ore to a reverse flotation treatment utilizing a combination of reagents comprising a carbonate flotation collector and agents which modify the surface physical and chemical properties of the phosphate particles and depress the latter. The process also has application to the enrichment of sedimentary and crystalline phosphate ores with gangues containing carbonates and, possibly, silicates and silico-aluminates.

REFERENCES:
patent: 1914695 (1933-06-01), Lange
patent: 2105807 (1938-11-01), Crago
patent: 2299893 (1942-10-01), Greene
patent: 2362432 (1944-11-01), Cahn
patent: 2383467 (1945-08-01), Clemmer
patent: 2951585 (1960-09-01), Burks
patent: 3462107 (1969-08-01), Bushell
patent: 3482688 (1969-12-01), Bushell
Chem. Abst., 60366h, vol. 69, 1968.

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