FIELD: metallurgy.
SUBSTANCE: invention relates to nonferrous metals hydrometallurgy and can be used at processing of leaching solutions of oxidised nickel ores and other raw materials. Method of collective extraction of nickel and cobalt from sulphate solutions containing calcium, magnesium and manganese, includes extraction of nickel and cobalt di-(2,4,4)trimethylamyldithiophosphine acid (Cyanex 301) in thinner at presence of tertiary amine at molar correlation Cyanex 301: tertiary amines = 1:1÷1.5 in air atmosphere. After extraction it is implemented extract cleaning from admixtures. Re-extraction of metals is implemented by solutions of sulfuric acid at temperature 20-30°C.
EFFECT: simplification of separation process of nickel and cobalt from sulphate solutions.
3 cl, 1 dwg, 6 tbl, 7 ex
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