FROTH FLOTATION PROCESS FOR THE SEPARATION OF SILICATES AND ALKALINE EARTH METAL CARBONATES USING A COLLECTOR COMPRISING AT LEAST ONE HYDROPHOBICALLY MODIFIED POLYALKYLENEIMINE

摘要

the present invention is to carry out one or more hydrophobically modified polyalkyleneimines, silicates and relates to a process for separating an alkaline earth metal carbonate, in which (i) the polyalkyleneimine is hydrophobically modified by substituting in its primary and / or the group of hydrogen, some or all of the secondary amino group R, wherein R is a linear or branched or cyclic alkyl and / or aryl group, and contains, and contains 1 to 32 carbon atoms, (ii) prior to modification, the polyalkyleneimine has a molecular weight of more than three alkylene imine repeating unit, and from 140 to 100,000 g / mol , (iii) modification of the polyalkyleneimine is to increase the amount of C atoms from 1 to 80% as compared to non-modified polyalkyleneimine. Furthermore, the present invention relates to a silicate-containing product and an alkaline earth metal carbonate-containing product, and use of these obtained by the process of the invention.