Title:
METHOD OF RECOVERING ABRASIVE FROM ABRASIVE SLURRY WASTE LIQUID AND APPARATUS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2008/020507
Kind Code:
A1
Abstract:
Not only small-diameter foreign matter but also large-diameter foreign matter
mixed in polishing is effectively removed from an abrasive slurry waste liquid
to thereby attain recovery of abrasive. Recovery of abrasive from an abrasive
slurry waste liquid is accomplished by the use of a recovery apparatus comprising
a high pressure jet disperser machine capable of mutual collision of abrasive
slurry waste liquids as high pressure jet streams in a dispersion vessel; an ultrasonic
strainer capable of, while applying ultrasonic waves to the dispersion liquid
obtained by dispersion by means of the high pressure jet disperser machine and/or
a barrier filter, straining the dispersion liquid through the barrier filter;
and a cyclone capable of classifying of the filtrate liquid obtained by straining
by means of the ultrasonic strainer.
Inventors:
NAKAMURA HIDEO (JP)
KOBAYASHI KATSUHIRO (JP)
MATSUMOTO ITSUO (JP)
KOBAYASHI KATSUHIRO (JP)
MATSUMOTO ITSUO (JP)
Application Number:
PCT/JP2007/062046
Publication Date:
February 21, 2008
Filing Date:
June 14, 2007
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
NAKAMURA HIDEO (JP)
KOBAYASHI KATSUHIRO (JP)
MATSUMOTO ITSUO (JP)
NAKAMURA HIDEO (JP)
KOBAYASHI KATSUHIRO (JP)
MATSUMOTO ITSUO (JP)
International Classes:
B24B57/02; B01D29/01; B01D29/66; B02C19/06; B03B5/32
Foreign References:
| JP2001300844A | 2001-10-30 | |||
| JP2006043781A | 2006-02-16 | |||
| JPH1119872A | 1999-01-26 | |||
| JPH04315576A | 1992-11-06 | |||
| JP2001070725A | 2001-03-21 | |||
| JPH1157521A | 1999-03-02 |
Attorney, Agent or Firm:
SENMYO, Kenji et al. (SIA Kanda Square17, Kanda-konyach, Chiyoda-ku Tokyo 35, JP)
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