Patent ID: 6547961
Filing Date: 2003-04-15
Classification: B24B

Abstract:
A grinding slurry recycling apparatus comprising:a plurality of recovery tanks for recovering as recovery slurry a used slurry used in a grinding treatment; a cyclone separator for sizing the particles of the recovery slurry so as to obtain sizing slurry having a predetermined particle size, and for supplying, as the recovery slurry, the sizing slurry having the predetermined particle size; and recycling means for recycling the sizing slurry, so as to obtain a recycled slurry which can be used again in the grinding treatment, the recycling means including a supersonic wave generator which irradiates a supersonic wave to the recovery slurry for dispersing the recovery slurry, and wherein the recycling means further comprises: a recycled slurry producing means for producing mixed slurry as recycled slurry by adding and mixing fresh slurry and pure water into sizing slurry, and wherein when the concentration of the mixed slurry becomes equal to a predetermined concentration, the mixing of the fresh slurry and the pure water into the recovery slurry is stopped.