The influence of slenderness ratios of multi-hole ceramic filters from S_F -1.67 to S_F - 8.36 of filter surface on efficiency of liquid steel refining from non-metallic phase

摘要

We propose in this publication the introduction of new, additional definition describing the multiple orifice ceramic filters used in research works on the liquid steel filtrations, calling this the filter slenderness ratio. In order to confirm the theoretical assumptions we have performed a series of the laboratory scale experiments (for the filter slenderness ratio S_F -1.67 to S_F- 8.36). The influence of the filter slenderness on the filtration process efficiency has been determined through variations in quantities and surface shares of the non-metallic phase in the filtrated steel in relation to the non-filtered steel. We present also the results of researches on the separating surfaces between the liquid steel and the ceramic filter material, are put together of photos and scanning microscope microanalyses in the publication.