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Floss flotation method for separating silicates and alkaline earth metal carbonates using a scavenger comprising at least one hydrophobically modified polyalkyleneimine
Floss flotation method for separating silicates and alkaline earth metal carbonates using a scavenger comprising at least one hydrophobically modified polyalkyleneimine
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机译:使用包含至少一种疏水改性的聚亚烷基亚胺的清除剂,使用浮选法分离硅酸盐和碱土金属碳酸盐
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摘要
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.
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机译:本发明涉及实现至少一种疏水改性的聚亚烷基亚胺的分离硅酸盐和碱土金属碳酸盐的方法,其中:i)通过用官能团R替换其伯氨基和/或仲氨基的全部或部分氢来对聚亚烷基亚胺进行疏水改性,其中R包含直链或支链或环状的烷基和/或芳基,并且包含1至32碳原子ii)在改性之前,聚亚烷基亚胺具有至少3个亚烷基亚胺重复单元,分子量在140至100 000 g / mol之间;iii)聚亚烷基亚胺的改性导致相对于未改性的聚亚烷基亚胺的原子C量增加1-80%。本发明另外涉及通过本发明的方法获得的含硅酸盐的产物和含碱土金属碳酸盐的产物及其用途。
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