METHOD FOR IMPROVING PRODUCTION CHARACTERISTICS OF FOAMING AGENT IN SEPARATING TREATMENT OF FOAMED SUSPENSION IN MEDIUM (VERSIONS) Russian patent published in 2019 - IPC B03D1/01 B03D1/02 B03D101/04 B03D103/02 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to methods, compositions for improving performance of a foaming agent during separation as a result of froth flotation of a suspension in a medium. Method of improving performance of a foaming agent when separating a suspension as a result of froth flotation involves a step of mixing a stable microemulsion of the foaming agent, medium and fine particles and extracting the concentrate from the suspension as a result of bubbling through the suspension. Microemulsion contains a continuous phase which is a fluid and a dispersed phase. Microemulsion as a whole with respect to weight is formed from: 1–95 % water and a foaming ingredient containing 1–50 % alcohol mixture, which is supplied from stream of wastes from production of 2-ethylhexanol, 1–15 % of C8–C10 fatty acids, 1–30 % of 2-butoxyethanol, 1–20 % of propylene glycol and 1–10 % of potassium hydroxide, where total sum of content of all components of microemulsion is equal to 100 %. According to the second version, the microemulsion as a whole with respect to weight is formed from: 1–96 % water and a foaming ingredient containing 1–50 % alcohol mixture, which comes from the stream of wastes from production of 2-ethylhexanol, 1–20 % of C8–C10 fatty acids, 1–30 % of 2-butoxyethanol and 1–10 % of potassium hydroxide, where the total content of all components of the microemulsion is equal to 100 %. According to the third version, the microemulsion as a whole with respect to weight is formed from: 1–96 % water and a foaming ingredient containing 1–50 % alcohol mixture, which comes from the stream of wastes from production of 2-ethylhexanol, 1–20 % of C8–C10 fatty acids, 1–30 % of propylene glycol and 1–10 % of potassium hydroxide, where the total content of all components of the microemulsion is equal to 100 %. According to the fourth version, the microemulsion as a whole with respect to weight is formed from: 1–96 % water and a foaming ingredient containing 1–50 % alcohol mixture, which comes from the stream of wastes from production of 2-ethylhexanol, 1–30 % 2-ethylhexanoic acid, 1–20 % 2-butoxyethanol and 1–10 % potassium hydroxide, where the total content of all components of the microemulsion is equal to 100 %.

EFFECT: technical result is higher efficiency of froth flotation.

16 cl, 1 tbl