METHOD OF COAL FLOTATION Russian patent published in 2018 - IPC B03D1/00 

FIELD: chemistry.

SUBSTANCE: complex reagent is introduced into the pulp, including a reagent-collector (regenerated mineral oils and kerosene-gas oil fractions) and a foaming agent, pulp conditioning is produced, the flotation process is carried out, and the combustible mass is released into the foam product. The complex reagent further comprises a modifier, butyl ethers of mono- and dipropylene glycols, and an additive consisting of a distillation residue fraction of the production of propylene oxide boiling at a temperature above 97ºC (dichlorosubstituted (by OH) mono- and dichlorosubstituted dipropylene glycols) added during the compounding process of the reagent-collector.

EFFECT: increasing the technological parameters and selectivity of the flotation process.

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