大こう配磁気フィルタにおける強磁性粒子のたい積

概要

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The retention profile for ferromagnetic magnetite particles is observed directly in three kinds of parallel stream type HGMS filters which are different in the arrangement of magnetic wires. At the same time, the recovery is measured as a function of time. The filter which shows the best performance is made from the wires with a minimum separation of 0.5 mm and the spacer of a minimum thickness of 0.3 mm. As soon as the retention front reaches a filter element outlet in the filter, the recovery decreases abruptly from a value of 100%. But the breakthrough time is constant at a magnetic field strength of 3 kOe and above.