超声预处理PAM对高岭土沉降和过滤的影响  

Effect of PAM Pretreated by Ultrasound on Flocculating Sedimentation and Filtration of Kaolin

作　　者：姚雷 高博 卜祥宁 谢永鑫[1] 沙杰 Yao Lei;Gao Bo;Bu Xiangning;Xie Yongxin;Sha Jie(Shaanxi New Energy Coal Preparation Technology Co.,Ltd.,Xi’an,Shaanxi 710100;Key Laboratory of Coal Processing and Efficient Utilization(Ministry of Education),China University of Mining&Technology,Xuzhou,Jiangsu 221116;School of Chemical Engineering and Technology,China University of Mining&Technology,Xuzhou,Jiangsu 221116)

机构地区：[1]陕西新能选煤技术有限公司,陕西西安710100 [2]中国矿业大学煤炭加工与高效洁净利用教育部重点实验室,江苏徐州221116 [3]中国矿业大学化工学院,江苏徐州221116

出　　处：《非金属矿》2023年第6期61-64,69,共5页Non-Metallic Mines

基　　金：国家自然科学基金(52204296)。

摘　　要：为解决富含黏土矿物的浮选尾矿的高效脱水问题,采用超声波对聚丙烯酰胺(PAM)进行处理,探讨了超声改性与未改性PAM对高岭土悬浮液絮凝沉降和过滤效果的影响。结果表明,在探头功率200 W、超声处理10 s和槽式功率600 W、超声处理15 s条件下,上清液浊度最低,分别为49.2 NTU和41.3 NTU。探头和槽式超声处理均可显著降低高岭土滤饼形成过程中的阻力,大大缩短过滤时间。To solve the problem of efficient dewatering of flotation tailings rich in clay minerals,we use ultrasound to treat polyacrylamide(PAM)and explore the effects of ultrasound modified and unmodified PAM on the flocculation settlement and filtration efficiency of kaolin.The results showthat the lowest turbidities of the supernatant for probe-and tank-type ultrasound systems are 49.2 NTU(200 W input power and 10 s treatment time)and 41.3 NTU(600 W input power and 15 s treatment),respectively.Both probe-and tank-type ultrasonic treatment can significantly reduce the resistance during the formation of kaolin filter cake,thereby greatly shortening the filtration time.

关 键 词：高岭土 絮凝沉降 过滤 超声 聚丙烯酰胺 

分 类 号：O646[理学—物理化学] TD94[理学—化学]