METHOD OF SODIUM CHLORIDE FLOTATION Russian patent published in 2016 - IPC C01D3/04 B03D1/02 

FIELD: chemistry.

SUBSTANCE: invention relates to flotation separation of sodium chloride from mixtures thereof with chloride and/or potassium sulphate salts, magnesium, calcium, for example, for separation of sodium chloride from salts of salt lakes or potassium ores. Method envisages mixture of salts, preparing suspension, treating suspension with reagent, sodium chloride collector, sodium chloride flotation with extraction of sodium chloride into foam product, separate condensation of foam and chamber flotation products in condensers. Collector is alkyl morpholines non-aqueous mixture with hydrocarbon radical length from C₉ to C₂₂ and liquid non-hydrocarbon reactant at ratio of alkyl morpholin:non-polar reagent 1:0.03÷1:3.0 at mixture temperature from 15 °C to 80 °C.

EFFECT: technical result is reduction of reagent-collector consumption, reduction of its accumulation in salt solution and improvement of condensation process parameters.

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