Enrichment process by flotation of phosphate-containing ores wit

Details Enrichment process by flotation of phosphate-containing ores wit Enrichment process by flotation of phosphate-containing ores wit

1981-12-31

1983-12-20

Nozick, Bernard

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209167, 252 61, B03D 114

Patent

active

044216416

ABSTRACT:
The present invention relates to an enrichment process, by flotation, of sedimentary ores containing phosphate, and comprising a gangue of the carbonated type and in some cases a gangue of the siliceous type, wherein an amphoteric product of formula ##STR1## is at least used as collecting agent, in which formula: R is of form R.sub.1 or R.sub.1 O--, R.sub.1 being a saturated or unsaturated alkyl radical, either linear or branched, and comprising between 5 and 19 carbon atoms.

REFERENCES:
patent: 2217684 (1940-10-01), Kirby et al.
patent: 4168227 (1979-09-01), Polgaire et al.
patent: 4206045 (1980-06-01), Wang et al.
patent: 4287053 (1981-09-01), Lehr et al.
patent: 4324653 (1982-04-01), Henchiri et al.
patent: 4358368 (1982-11-01), Hellsten

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