Synthesis of γ-alkoxy-propylamines and their collecting properties on aluminosilicate minerals^①

来源期刊：中南大学学报(英文版)2004年第3期

论文作者：曹学锋 胡岳华 徐兢

文章页码：280 - 285

Key words：γ-alkoxy-propylamine; synthesis; aluminosilicate; reverse floatation; structure-reactivity

Abstract: γ-alkoxy-propylamines,C₁₂H₂₅O(CH₂)₃NH₂,C₁₄H₂₉O(CH₂)₃NH₂, C₁₆H₃₃O(CH₂)₃NH₂, C₁₈H₃₇O(CH₂)₃NH₂ were synthesized from aliphatic alcohol and acrylonitrile. The flotation tests of kaolinite, pyrophyllite and illite were conducted. The flotation mechanisms were explained in view of the structures of reagents and aluminium silicate minerals, zeta potential and Fourier transform infrared spectrum measurements. The results show that the synthesized ralkoxy-propylamines are more effective than dodecyl amine for flotation of kaolinite, pyrophyllite and illite. For flotation kaolinite and illite, the collecting ability is in the order of C₁₈H₃₇O(CH₂)₃NH₂> C₁₆H₃₃O(CH₂)₃NH₂>C₁₄H₂₉O(CH₂)₃NH₂> C₁₂H₂₅O(CH₂)₃NH₂, but the r-alkoxy-propylamines types of collectors have almost the same collecting ability on pyrophyllite, which demonstrating thatγ-alkoxy-propylamines are new selective collectors for reverse floatation to remove aluminium silicate minerals from bauxite.