磁化水对膏体料浆管道输送摩阻损失影响试验研究  

Experiment Research on Magnetized Water's Effect on Friction Loss of Paste Slurry in Pipeline Transport

作　　者：蓝志鹏 王新民[1] 张钦礼[1] 陈秋松[1] LAN Zhipeng;WANG Xinmin;ZHANG Qinli;CHEN Qiusong(School of Resources and Safety Engineering,Central South University,Changsha 410083,Hunan,China)

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《黄金科学技术》2018年第6期811-818,共8页Gold Science and Technology

基　　金：中央高校基本科研业务费专项资金项目"基于不均衡级配多骨料组合安全高效充填技术研究"(编号:2017zzts582)资助

摘　　要：为了探究磁化水对膏体料浆管道输送流变性能的影响,基于自制的L型斜管试验装置,运用正交试验设计法进行了不同磁化条件下膏体料浆自流输送室内物理模拟试验,对试验结果进行优化组合筛选。结果表明:在适宜的磁化条件下,磁化水能够有效改善膏体料浆流变性能,降低料浆屈服应力和塑性黏度,提高膏体料浆管道输送可靠性。与空白组对比,当磁感应强度B=200～300 mT,磁化时间T=15～25 min,水循环流量为0.5～1.5 L/s时,膏体料浆摩阻损失最小,屈服应力降低8%～20%,塑性黏度降低12%～35%。To explore the influence of magnetized water on rheological properties of paste slurry pipeline conveying,an indoor experiment was carried out.On the basis of self-made L-inclined tube test device,the physical simulation test of gravity flow of paste slurry under different magnetizing conditions was carried out by orthogonal experimental design.The experimental results were optimized and screened in the end.The results show that the rheological properties of paste slurry can be effectively improved by magnetized water.Besides, magnetized water can reduce yield stress and plastic viscosity of slurry with suitable magnetization conditions, which can improve the reliability of slurry pipeline transportation at the same time. Furthermore,contrasting with blank group,when the magnetic induction being 200~300 mT,magnetized time being 15~25 min and cycling rate being 0.5~1.5 L / s,the friction loss of paste slurry is the smallest,the yield stress and plastic viscosity are reduced by 8%~20% and 12%~35% respectively.

关 键 词：磁化水 膏体料浆 摩阻损失 屈服应力 塑性黏度 L型斜管 磁化条件 正交试验 

分 类 号：TD853[矿业工程—金属矿开采]