Characteristics of filters from loosely poured metal powders

Conclusions The stopping power of granular filters from metal powders in the purification of water and nitric acid solutions from mechanical contaminants is comparable to that of sintered P/M filters. A protective layer from a coarser spherical powder fraction located under a fine purification layer improves the latter's hydraulic characteristics and increases its debris holding capacity. The coefficient of effectiveness of regeneration of such a filter by 90-sec flow reversal is equal to 0.98 and is virtually unaffected by the number of regeneration cycles.Translated from Poroshkovaya Metallurgiya, No. 2(278), pp. 37–41, February, 1986.