N_N_二乙基_N_十六烷基胺的合成及其对铝硅矿物浮选性能的影响.pdfVIP

39 4 Vol. 39 No. 4 20 10 7 Journal of China Universit y of M ining T e hnology Jul. 20 10 N, NN 曹学锋, 杨耀辉, 刘长淼, 孙 磊, 高志勇 ( , 410083) : 以十六胺甲酸和乙醛为原料, 合成了阳离子捕收剂N, N二乙基N十六烷基胺 ( DEN16 ) , 通过单矿物和人工 合矿浮选实验以及红外光谱和Zeta 电位测试, 考察了其对一水 硬铝石高岭石和伊利石的浮选行为以及矿物与药剂的作用机理. 浮选结果表明: 在 pH = 5~ 55, DEN16 用量为2 10- 4 mol/ L 时, 高岭石伊利石的回收率均高于 82% , 而 一水硬铝石仅为 60% ; 人工 合矿浮选精矿的铝硅比均高于20, 说明在 pH 8 时, 以DEN16 为捕收剂可以实现 铝硅酸盐与 一水硬铝石的分离. 红外光谱和Zeta 电位研究结果表明, DEN16 与3 种矿物的作用 皆为静电吸附, 且与高岭石和伊利石的作用强于一水硬铝石. : 高岭石; 伊利石; 一水硬铝石; N, N二甲基N十六烷基胺( DEN16 ) ; 反浮选 : TD 923 : A : 2010) Synthesis of N, NDiethylNH ex ade yl Amine and Its Effe t on Flotation Performan e of Baux ite CAO Xuefeng , YANG Yaohui, LIU Changmiao, SUN Lei, GA O Zhiyong ( S hool of Minerals Pro essing and Bioengineering , Cent ral Sout h University , Changsha, H unan 4 10083, China) Abstract: T he N, NdiethylNhex ade yl amine ( DEN16 ) w as synthesized w ith hex ade yl a mine, for mi a id and ethylal as raw mater ials. U sing DEN16 as a ationi olle tor, the flota tion behavior s of diaspore, kaolinite and illite w er e investigated by single mineral flotation tests and separation tests of artifi ial mix ed minerals of diaspor ekaolinite and diasporeillite. T he in tera tion me hanisms betw een DEN16 and thr ee miner als w er e also studied by infrared spe trum - 4 and Zeta potential, respe tively. T he r esults show that in the presen e of 2 10 mol/ L 16 DEN and pH of 5- 55, the re over ies of kaolinite and illite w ere both hi