| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to methods of extracting cerium (IV) from sulphate solutions by extraction and can be used for concentration of cerium (IV) from ore, processing solutions with a complex salt composition and for analytical purposes. Extraction is carried out from 0.5-2.0 M sulphate solution with 0.32% 2-methyl-8,9-dihydro[1,2,4]triazolo[1,5-?]quinazolin-6(7H)-one solution, dissolved in methylene chloride. The phase contact time is 15 min. After demixing, the organic phase is separated and re-extraction is performed.EFFECT: conducting the process in milder conditions without using concentrated acid solutions and high output of cerium.1 dwg, 2 ex |
