FIELD: mining.
SUBSTANCE: method includes serial treatment of pulp with reagent-collector - ether of phosphorus-bearing compound with common formula: [RO(C2H4O)m]2P(O)OM, where R is alkyl C4-20, alkyl (C8-10)phenyl, M - H, K, HN(CH2CH2OH)3 m=4-12, and sulphoxyl collector in ratio of (3:1)-(9:1) and extraction of concentrate. As sulphoxyl collector, amine salts of alkyl sulfates are used with common formula: ROSO3NHn(CH2CH2OH)m (R=C10-20, n, m=1-3), amine salts of alkylarylsulphonates with common formula: RC6H5SO3NHn(CH2CH2OH)m (R=C10-22, n, m=1-3), Asparal F.
EFFECT: improved quality of flotation concentrate.
4 cl, 2 dwg, 6 tbl, 2 ex
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