Froth flotation process for the separation of silicates and alkaline earth metal carbonates using a collector comprising at least one hydrophobically modified polyalkyleneimine,申请号EP20100157099-传众专利搜索

Froth flotation process for the separation of silicates and alkaline earth metal carbonates using a collector comprising at least one hydrophobically modified polyalkyleneimine

申请公布号：EP2366456(A1)

申请号：EP20100157099

申请日期：2010.03.19

申请公布日期：2011.09.21

申请人：

OMYA DEVELOPMENT AG

发明人：GANE, PATRICK A.C.;BURI, MATTHIAS;RENTSCH, SAMUEL;SOETEMANN, JOERG

分类号：B03D1/01;B03D1/08;B03D1/12;B03D101/02;C22B1/00;C22B26/00;C22B26/20

主分类号：B03D1/01

摘要：<p>The invention refers to a process to separate silicates and alkaline earth metal carbonates implementing at least one hydrophobically modified polyalkyleneimine, wherein: i) the polyalkyleneimine is hydrophobically modified by replacement of all or part of the hydrogens of their primary and/or secondary amino groups by functional group R, where R comprises a linear or branched or cyclic alkyl and/or aryl group and contains 1 to 32 carbon atoms; ii) prior to modification, the polyalkyleneimine has at least 3 alkyleneimine repeat units and a molecular weight of between 140 and 100 000 g/mol; iii) modification of the polyalkyleneimine results in an increase in the atomic C amount, relative to the unmodified polyalkyleneimine, of between 1 and 80 %. The invention additionally refers to a silicate-containing product and an alkaline earth metal carbonate-containing product obtained by the process of the invention, and to their uses.</p>