| 摘要 |
FIELD: mining; chemical industry; methods of production of a reactant-foamer. ^ SUBSTANCE: the invention is pertaining to the improved method of production of a reactant-foamer used for flotation of the ores and representing a mixture of 2.2.4-trimethylpentadiol - 1.3-monoisobutyrate (a synonym - 2.2.4-trimethyl-3-pentanol-1-isobutyrate) and 2.2.4- trimethylpentadiol -1.3 with the share of the latter from 6 up to 45 mass %. The given mixture is produced by a method of an esters condensation of an isobutyric aldehyde at presence of a water solution of sodium hydrate in the tubular reactor at heating with the subsequent fragmentation of the reaction mixture into a hydrocarbon part and a water solution of sodium hydrate, the water flushing a hydrocarbon part and extraction from it by a method of a rectification of a target product and the unreacted isobutyric aldehyde. At that and the recyculation factor of the reaction mixture lays within the limits of 0.6-10. The technical result is an increased speed of the synthesis, decreased power input of the process, decreased (by 20-30 %) consumption of isobutyric aldehyde per a pass per one ton of the target product, a possibility of production of the reactant-foamer with a broad range of the share of diol in it, application of the produced product as the reactant-foamer increases extraction of the floatable material in a flotation concentrate. ^ EFFECT: the invention ensures an increased speed of the synthesis, a decreased power input and consumption of isobutyric aldehyde, production of the reactant-foamer with a different share of diol in it, increases extraction of the floatable material in the flotation concentrate. ^ 1 tbl, 3 ex |
