Patent ID: 7059943

Claim:
An apparatus for recycling slurry used with an edge-notch polishing apparatus comprising: a dirty slurry return conduit; a first screen filter in fluid communication with said dirty slurry return conduit, for removing particulates larger than a first predetermined size from the slurry; a dirty slurry storage tank downstream of said first screen filter; a second filter located downstream of said dirty slurry storage tank for removing particulates larger than a second predetermined size from the slurry, wherein the second predetermined size is smaller than the first predetermined size such that the second filter removes smaller particulates than the first filter; a clean slurry storage tank located downstream of said second filter; an overflow relief conduit which directs overflow from the clean slurry storage tank into the dirty slurry storage tank; and, a clean slurry supply conduit leading from said clean slurry supply tank.