胍基阳离子捕收剂反浮选磷矿的性能与机理分析  

Flotation Performance and Mechanism Analysis of Phosphate Ore with Guanidine Cation Collector

作　　者：罗惠华 张正虎 刘幸 汤家焰 丁一刚[4] LUO Huihua;ZHANG Zhenghu;LIU Xing;TANG Jiayan;DING Yigang(Xingfa School of Mining Engineering,Wuhan Institute of Technology,Wuhan 430074,China;Bosai Minerals Group Limited Company,Chongqing 400010,China;Institute of Mining Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,China;School of Chemical Engineering and Pharmacy,Wuhan Institute of Technology,Wuhan 430205,China)

机构地区：[1]武汉工程大学兴发矿业学院,湖北武汉430074 [2]重庆市博赛矿业有限公司,重庆400010 [3]内蒙古科技大学矿业研究院,内蒙古包头014000 [4]武汉工程大学化工与制药学院,湖北武汉430205

出　　处：《武汉工程大学学报》2021年第5期546-550,共5页Journal of Wuhan Institute of Technology

基　　金：湖北省技术创新重大项目(2017ACA187,2018ACA153);内蒙古自然科学基金(2019BS05019);武汉工程大学第十一届研究生教育创新基金(CX2019101)。

摘　　要：为了研究磷矿反浮脱硅过程中,胍基阳离子磷矿捕收剂的作用机理,以N-椰油基-1,3-丙撑二胺、单氰胺、乙酸为原料制得一种阳离子表面活性剂,并用于傅里叶红外光谱仪表征,测试了该药剂与3种矿物作用前后的接触角、Zeta电位、红外光谱,进行了石英、白云石、胶磷矿的纯矿物浮选试验等。结果表明:该合成药剂属胍基阳离子表面活性剂,在广泛pH值范围内,对石英的捕收能力较强,对白云石次之,对胶磷矿较弱;在弱碱性下,对白云石捕收性能有所提高;相较白云石、胶磷矿,该药剂更易与石英产生吸附作用,使矿物表面呈现疏水性;接触角、Zeta电位、红外光谱测试结果说明与3种矿物的吸附主要是物理吸附。试验结果说明该胍基阳离子表面活性剂可以作为磷矿反浮脱硅捕收剂。To study the mechanism of guanidine cationic collector in reverse flotation desilication of phosphate rock,a cationic surfactant was prepared from N-coconut-1,3-propylenediamine,monocyanamine and acetic acid,and characterized by Fourier transform infrared spectroscopy.The contact angle,zeta potential and infrared spectrum of the reagent before and after interaction with the three minerals were tested.The pure mineral flotation tests of quartz,dolomite and collophanite were performed.The results show that the synthetic reagent is guanidine cationic surfactant.Within a wide of pH range,its collection performance for quartz is strongest,followed by dolomite and collophanite.The collection performance for dolomite is improved with weak alkalinity.Compared with dolomite and phosphate rock,the reagent is more easily adsorbed to quartz,making the quartz surface hydrophobic.The test results of contact angle,zeta potential and infrared spectrum show that the adsorption of the three minerals is mainly physical adsorption.The experimental results show that the guanidine cation surfacetant can be used as a collector for phosphate rock reverse flotation desilication.

关 键 词：合成药剂 磷矿 胍基阳离子捕收剂 反浮选 

分 类 号：TD9233[矿业工程—选矿]