磁力旋流器分离性能的试验研究

Experimental research on separation performance of magnetic cyclone

为了解决陶瓷、化工生产领域内浆液脱铁的工程问题,开发了一种可以自动排料的磁力旋流器,并通过试验研究和理论分析的方法,对比研究了入口流量、底流分率对磁力旋流器分离效率的影响。结果表明:磁力旋流器可以通过磁系吸附浆液中的铁化合物颗粒。对比试验结果,可以得出结论:磁力旋流器内铁化合物颗粒的径向沉降速度随进口流量的增大而减小。磁力旋流器的分离效率随进口流量的增大而减小,其分离效率与进口流量的关系与理论推论相符。对于单固相铁粉浆液,磁力旋流器的分离效率随底流分率的增大而减小;对于多固相铁粉浆液,磁力旋流器的分离效率随底流分率的增大先增大后减小,当底流分率为0.55时,分离效率最高。

In order to solve the engineering problem of slurry de-ironing in the field of ceramics and chemical production,a magnetic cyclone capable of automatic discharge was developed.The effects of inlet flow rate and under flow fraction on separation efficiency of magnetic cyclone were compared and analyzed by experimental study and theoretical analysis.The results show that the iron compound particles in slurry can be adsorbed by adding magnetic system in cyclone.Comparing the experimental results,it could be concluded that the radial settling velocity of the iron compound particles and separation efficiency in the magnetic cyclone decreases with the inlet flow rate increasing,and the relationship between the separation efficiency and the inlet flow is consistent with the theoretical deduction.For single solid phase iron powder slurry,the separation efficiency of the magnetic cyclone decreases with the underflow fraction increasing.However,for the multi-solid phase iron powder slurry,the separation efficiency appears a maximum critical value with the underflow fraction increasing,and the critical value occurrs at the underflow fraction 0.55.