| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to a floatation agent for iron ore containing magnetite and/or haematite. Use of a composition containing A) at least one amine alkoxylate ester of formula (1) or a salt thereof:, where A, B are independently a C-C-alkylene radical, R-C-C-alkyl or -alkenyl radical, R, R, Rare independently H or a C-C-acyl radical under the condition that at least one of the radicals R, Ror Ris a C-C-acyl radical, x, y, z are independently an integer from 0 to 50 under the condition that x+y+z yields an integer from 1 to 100, and B) a compound of formula D-NH, where D is a hydrocarbon radical having 1 to 50 carbon atoms, which may contain either an oxygen atom or an oxygen atom and a nitrogen atom in amount of 10 to 5000 g/t as a collecting agent for reverse floatation of iron ore containing magnetite, haematite or both, calcite, phosphate ore and feldspar.EFFECT: high efficiency of floatation.18 cl, 1 tbl |
