Synthesis of N-decyl-1,3-diaminopropanes and its flotation propertieson aluminium silicate minerals  

作　　者：胡岳华 曹学锋 李海普 蒋玉仁 杜平 

机构地区：[1]College of Resources Processing and Bio Engineering, Central South University [2]College of Chemistry and Chemical Engineering, Hunan Normal University

出　　处：《中国有色金属学会会刊：英文版》2003年第2期417-420,共4页Transactions of Nonferrous Metals Society of China

基　　金：Project(G19990 64 90 1)supportedbytheNationalKeyFundamentalResearchandDevelopmentProgramofChina ;Project( 5 992 5 412 )supportedbytheNationalScienceFundforDistinguishedYoungScholarofChina

摘　　要：N decyl 1, 3 diaminopropanes (DNs) were synthesized from alkyl amine acrylonitrile at ambient pressure. With the synthesized DNs as collectors, the flotation of kaolinite, pyrophyllite and illite was conducted and the results were interpreted in terms of the structure activity relationship. The DNs are found to be more effective collectors than dodecyl amine, exhibiting the highest recovery over a pH range of 46. Among the DNs examined, DN 12 shows the highest flotation efficiency. The flotation mechanisms were explained in view of the structures of reagents and aluminium silicate minerals. It is demonstrated that DNs can become new selective collectors for reverse floatation to remove aluminium silicate minerals from bauxite.N decyl 1, 3 diaminopropanes (DNs) were synthesized from alkyl amine acrylonitrile at ambient pressure. With the synthesized DNs as collectors, the flotation of kaolinite, pyrophyllite and illite was conducted and the results were interpreted in terms of the structure activity relationship. The DNs are found to be more effective collectors than dodecyl amine, exhibiting the highest recovery over a pH range of 46. Among the DNs examined, DN 12 shows the highest flotation efficiency. The flotation mechanisms were explained in view of the structures of reagents and aluminium silicate minerals. It is demonstrated that DNs can become new selective collectors for reverse floatation to remove aluminium silicate minerals from bauxite.

关 键 词：浮选 铝土矿 浮选药剂 合成 

分 类 号：TD923[矿业工程—选矿]