Process for the concentration by flotation of fine mesh size or

Details Process for the concentration by flotation of fine mesh size or Process for the concentration by flotation of fine mesh size or

1976-12-13

1978-10-03

Hearn, Brian

Classifying, separating, and assorting solids

Fluid suspension

Liquid

423 26, B03D 114

Patent

active

041183126

ABSTRACT:
The invention relates to the concentration by flotation of fine mesh size and/or oxidized ores.
The invention consists in using a chelating agent selected from the .beta.-diketones as flotation reagents in a conventional flotation process. Fine mesh size ores and/or oxidized ores, notably oxidized copper, lead or zinc ores with carbonated and/or silicated gangue can also be used as starting materials.
Application:making use as starting materials of ores which are difficult to cause to float by conventional methods.

REFERENCES:
patent: 2395866 (1946-03-01), Gutzeit
patent: 3088955 (1963-05-01), Foos
patent: 3438494 (1969-04-01), Fuerstenau et al.
Rinelli et al., "Flotation of Zinc & Lead Oxide-Sulfide Ores with Chelating Agents" in Tenth International Mineral Processing Congress (Jones Ed.), Inst. Min & Metall. 1974.
Marcus et al., Ion Exchange & Solvent Extraction of Metal Complexes, Wiley-Luterscience, 1969, pp. 502-505.

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