초록 ▼

Sintered glass pellets which generally decrease in particle size as they increase in specific gravity provide a unique filter medium which varies from larger pellets at its inlet (upstream) upper portion to smaller pellets at its outlet (downstream) lower portion. In view of the variation in specifi

Sintered glass pellets which generally decrease in particle size as they increase in specific gravity provide a unique filter medium which varies from larger pellets at its inlet (upstream) upper portion to smaller pellets at its outlet (downstream) lower portion. In view of the variation in specific gravity, particles forming the filter medium generally resume substantially their initial respective positions after the medium is back-flushed for cleaning. Although pellets throughout the medium differ in specific gravity, they are made of the same ingredients. The individual pellets are formed by granulating finely-ground glass with a suitable binder and sintering the resulting granules.

대표청구항 ▼

A filter bed having an inlet end and an outlet end and consisting essentially of particles which vary in size and in specific gravity from coarse particles of relatively low specific gravity at the inlet end to finer particles of higher specific gravity at the outlet end, each particle being a glass

A filter bed having an inlet end and an outlet end and consisting essentially of particles which vary in size and in specific gravity from coarse particles of relatively low specific gravity at the inlet end to finer particles of higher specific gravity at the outlet end, each particle being a glass pellet of from about 5 to about 35 mesh (U.S. Sieve Size), having a specific gravity of from about 1.00 to about 2.60 and consisting essentially of a sintered granule of glass particles, at least 95 percent of which were finer than 100 mesh prior to sintering, each granule being a non-compacted loosely-formed agglomerate of a (solid particles)/binder admixture, the solid particles of which consist essentially of glass particles.