Browse Prior Art Database

Slurry Recycling System for Metallurgical Polishers

IP.com Disclosure Number: IPCOM000113005D
Original Publication Date: 1994-Jun-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Walker, LD: AUTHOR [+2]

Abstract

Commercially available automatic metallurgical polishing equipment is modified to reduce polishing slurry required, maintenance cost, and equipment down time. By separating drains, eliminating slurry dams, adding a container to hold polishing slurry, and adding a filter to a polishing slurry feed line; twelve to twenty four hour continuous operation is achieved before routine maintenance and new slurry is required.

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Slurry Recycling System for Metallurgical Polishers

      Commercially available automatic metallurgical polishing
equipment is modified to reduce polishing slurry required,
maintenance cost, and equipment down time.  By separating drains,
eliminating slurry dams, adding a container to hold polishing slurry,
and adding a filter to a polishing slurry feed line; twelve to twenty
four hour continuous operation is achieved before routine maintenance
and new slurry is required.

      Referring to the diagram, workstation 2 contains standard
polisher 4 and polishing slurry pump 6.  Slurry container 8 is filled
with fresh slurry at the beginning of a work shift through valve V1.
During polishing operations, pump 6 draws slurry from container 8
through filter 10.  Filter 10 is sized appropriately to pass
polishing particle size, e.g., 0.5 micron, while trapping larger
particles such as is done by a 1.0 micron filter.  Drains of polisher
4 are replumbed to take only processing water directly to industrial
waste drain 14.  Slurry which is applied to a polisher platen through
nozzle 12 is routed to container 8.

      At the end of a work shift, valve V2 is opened to dump slurry
to waste drain 14.  Then, filter 10 and container top 16 are removed
and all parts of the system are cleaned and rinsed.  When a new
filter 10 is installed, clean cover 16 is put on, and valve V2 is
closed; the system is ready for a new work shift.