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为了增强水对煤尘以及煤体的润湿性,提高水力除尘效果,通过实验测定了5种矿井水在不同磁化参数下的表面张力,研究了不同磁化参数对矿井水表面张力的影响特征以及磁场对矿井水作用的记忆效应.结果表明:矿井水的表面张力在磁场强度为100mT时均有明显下降,而其后随着磁化强度的增加逐渐趋于平稳;磁化时间对不同矿井水的表面张力的影响不尽相同,甚至呈相反的状态;磁场对水的作用具有一定的记忆效应,其记忆时间在18d左右;溶液表面张力值越高,受磁场影响越大,但经过磁化后,溶液的表面张力值均介于50～55mN/m之间.
In order to enhance the wettability of water to coal dust and coal and improve the effect of hydraulic dust removal, the surface tension of five kinds of mine water under different magnetization parameters was experimentally determined, and the influence of different magnetization parameters on the surface tension of mine water was studied. The results show that the surface tension of mine water drops obviously when the magnetic field intensity is 100mT, and then gradually stabilizes with the increase of magnetization. The magnetization time affects the surface water of different mine water The effect of the magnetic field on the water has a certain memory effect, the memory time is about 18d; the higher the surface tension of the solution, the greater the impact of the magnetic field, but after magnetization, the solution The surface tension values are between 50 ~ 55mN / m.