Flotation process for purifying calcite

Details Flotation process for purifying calcite Flotation process for purifying calcite

1975-04-04

1976-11-09

Halper, Robert

Classifying, separating, and assorting solids

Plural, diverse separating operations

Including electrostatic

209166, B03B 700

Patent

active

039909662

ABSTRACT:
Calcite is separated and purified from mineral impurities by grinding calcite ore, separating calcite from the impurities by conditioning the ground ore with a cationic flotation reagent selected from the group consisting of 1-hydroxyethyl-2-heptadecenyl glyoxalidine and 1-hydroxyethyl-2-alkylimidazolines and salt derivatives thereof, wherein the alkyl portion of the imidazoline is the alkyl portion of a fatty acid, dry or wet classifying the separated calcite and, if wet, settling the classified calcite in a thickener in the presence of an anionic settling agent.

REFERENCES:
patent: 2321186 (1943-06-01), Christmann
patent: 2364272 (1944-12-01), Christmann
patent: 2380698 (1945-07-01), Jayne
patent: 2494132 (1950-01-01), Jayne
patent: 2951585 (1960-09-01), Burks
patent: 2959281 (1960-11-01), Faucher
patent: 3219578 (1965-11-01), Cruickshank
patent: 3418237 (1968-12-01), Booth
patent: 3492226 (1970-01-01), Ryznar

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