Title:
METHOD FOR MANUFACTURING REGENERATED CERIUM OXIDE-BASED ABRASIVE PARTICLES, AND REGENERATED PARTICLES
Document Type and Number:
WIPO Patent Application WO/2014/168113
Kind Code:
A1
Abstract:
[Problem] To provide a method for regenerating used cerium oxide-based abrasive particles in which treatment can be performed using a small amount of chemicals without the use of fluorides, the method for regenerating used cerium oxide-based abrasive particles being such that degradation over time of the abrasive performance of the regenerated cerium oxide-based abrasive is reduced. [Solution] This method comprises: dispersing used cerium oxide-based abrasive particles in water to obtain a slurry; making alkaline the slurry containing the used cerium oxide-based abrasive particles; removing a coagulant or another chemical used to recover the abrasive; making the abrasive particles into a slurry again; rendering the pH thereof acidic, whereby the abrasive particles and glass microparticles generated by polishing are separated; and heat-treating the recovered abrasive particles, whereby the used cerium oxide-based abrasive particles are regenerated.
Inventors:
HONMA YOSHIHIRO (JP)
UEHARA TAISHI (JP)
GOTOH TOMOYA (JP)
UEHARA TAISHI (JP)
GOTOH TOMOYA (JP)
Application Number:
PCT/JP2014/060094
Publication Date:
October 16, 2014
Filing Date:
April 07, 2014
Export Citation:
Assignee:
DOWA ECO SYSTEM CO LTD (JP)
International Classes:
B24B57/02; C09K3/14
Domestic Patent References:
| WO2012018175A2 | 2012-02-09 | |||
| WO2013051700A1 | 2013-04-11 |
Foreign References:
| JP2003205460A | 2003-07-22 | |||
| JP2013126928A | 2013-06-27 |
Attorney, Agent or Firm:
KOMATSU TAKASHI (JP)
Komatsu Quantity (JP)
Komatsu Quantity (JP)
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