磁化对煤油水三元煤浆性质的影响

Study on influence of magnetization on property of coal-oil-water slurry

为了改变目前煤油水三元煤浆难以储存和运输的现状,选择对煤浆进行磁化。在磁感应强度为0.1～0.5 T,磁化时间为0～12 min的条件下,研究了磁化对神木煤和大同煤三元煤浆性能的影响。结果表明:在研究的磁场强度范围内,磁化时间为0～10 min时,神木煤煤浆和大同煤煤浆的粘度逐渐降低,流动性得到改善,三元煤浆稳定性得以提高。随着磁化时间的延长,在10～12 min时,煤浆的粘度开始升高。研究还发现,实验开始后的48 h,随着磁场强度的增大,2种三元煤浆的析水率总体呈下降趋势。研究表明,适当的磁化时间和磁场强度可以提高煤浆的稳定性,从而有利于煤浆的储存和输送。

The coal-oil-water slurry is hard to store and transport. In order to change this situation, the tricomponent slurry was magnetized. The influence of magnetization on property of Datong and Shenmu tricomponent slurry were investigated under the magnetic induction of 0. 1 -0. 5 T,the magnetization time of 0- 12 minutes. The results show that the magnetization time ranges from 0 to 10 minutes, the viscosity of the two slurry both gradually decrease, fluidity and stability has been improved,while the magnetization time ranges from 10 minutes to 12 minutes, the viscosity begin to increase. The study also find that 48 hours after the experiment started, with the increasing of magnetic induction,the syneresis of those two slurry totally decrease. The results show that the proper magnetization time and magnetic induction can improve the stability of tricomponent slurry, which is favorable for storing and transporting of slurry.