一种新型两性捕收剂的制备及其浮选性能  

Preparation and Flotation Performance of Amphoteric Collector

作　　者：杨婕[1] 罗惠华[1] 饶欢欢[1] 李成秀[2] 陈炳炎[2] 

机构地区：[1]武汉工程大学资源与土木工程学院,湖北武汉430074 [2]中国地质科学院矿产综合利用研究所,四川成都610041

出　　处：《武汉工程大学学报》2016年第1期68-73,共6页Journal of Wuhan Institute of Technology

基　　金：中国地质调查局地质大调查项目(12120111308750);十二.五科技支撑项目(2013BAB07B01)

摘　　要：为研究捕收剂的浮选性能,以十二胺和丙烯酸甲酯为原料合成一种两性捕收剂SB-116,并用于四川清平中低品位磷矿浮选试验.考察了物料比、反应时间、反应温度对药剂合成的影响,并通过红外光谱和浮选试验分析合成药剂的浮选性能.结果表明:反应物的物料配比、反应时间、反应温度对反应产物的浮选性能具有一定的影响,最佳的合成条件为十二胺和丙烯酸甲酯的摩尔比1∶1.6、反应时间45 min、反应温度68℃.合成药剂与原料的红外光谱分析证明十二胺和丙烯酸甲酯发生了化学反应,生成了十二烷基丙氨酸甲酯.单一反浮选、双反浮选以及正反浮选三种工艺流程的对比说明两性捕收剂SB-116在正反浮选中可以得到理想的选矿指标.To study the performance of amphoteric collector in phosphate flotation,we synthesized a SB-116 byusing dodecylamine and methyl acrylate as raw materials and used it in the flotation of Sichuan Qingping mid-low grade phosphate rock. Effects of the ratio of materials,reaction time and temperature on reagent synthesiswere investigated,and the flotation performance of synthetic reagent was analyzed by infrared spectrum and flo-tation tests. The results indicate that the parameters of the ratio of materials,reaction time and reaction tempera-ture have certain influences on the flotation performance of reaction products,and the optimal synthetic condi-tion is determined at the ratio of dodecylamine and methyl acrylate of 1∶1.6,reaction time of 45 min and reac-tion temperature of 68 ℃. The infrared spectra analysis of synthetic reagent and raw materials proved that dodec-ylalanine methyl ester was generated through the chemical reaction of dodecylamine and methylacrylate. Com-pared the three processes of single reverse flotation,double reverse flotation and direct- reverse flotation,weobtained the ideal beneficiation index in direct-reverse flotation by using the amphoteric collector SB-116.

关 键 词：两性捕收剂 合成 SB-116 磷矿浮选 

分 类 号：TD923.1[矿业工程—选矿]