The filter in order to remove the large-sized grain choice from grain slurry

摘要

While remaining behind the grain whose desire is smaller in slurry manner in order to remove the high granularity tail of gradation of slurry. It possesses the 1st and 2nd edge strip in this manner, the step which offers the filter medium where the fabric which at least possesses one which includes the polymer fiber which possesses the average Kazuhei equal fiber diameter under 1000nm formation is formed with 1 sheets at least participates. Next slurries current are supplied vis-a-vis one aspect of the fabric. This flow rather than, with the 1st grain set which possesses the maximum measurement under 0.1 microns vis-a-vis the 1st edge strip of the aforementioned filter medium, and possessing 0.45 microns super maximum individual size the 2nd set of the large grain has the many granularity which includes. These slurries current to be made to pass to the 2nd edge strip through the aforementioned filter medium, in this way and the grain where the inside of slurry is larger one part containment at least on the 1st edge strip of the aforementioned filter medium. Efficiency of filtration of the fabric for 1st grain set is under 0.05, the efficiency of filtration for 2nd grain set is 0.8 super.