type ceramic sintered metal five ceramic porous porous filter filter filter elements elements fig1 fig4 fig6 fig __________________________________________________________________________ 10used treated flow rate 25 m sup 3 h 25 m sup 3 h 25 m sup 3 h 25 m sup 3 hcondition maximum possible 4 5 kg cm sup 2 4 5 kg cm sup 2 4 5 kg cm sup 2 4 5 kg cm sup 2 pressure difference actual maximum 3 5 kg cm sup 2 3 5 kg cm sup 2 3 5 kg cm sup 2 3 5 kg cm sup 2 pressure differencefilter material boron carbon cordierite cordierite cordieriteelement particles bronze thickness 9 mm 7 5 mm 1 5 mm 0 3 mm 0 3 mm 0 3 mm porosity 18 50 50 50 diameter of pores 2 u03bcm 6 u03bcm 6 u03bcm 6 u03bcm dimension about 200 u03c6 u00d7 50 u03c6 u00d7 9 5 66 d u00d7 6 l 5 66 d u00d7 6 7 87 u00d7 2 56 d u00d7 6 l hollow filtering area 0 0585 m sup 2 2 3 m sup 2 2 3 m sup 2 3 9 m sup 2 calculated estimated values specific filtering area about 220.