METHOD FOR RECOVERING ABRASIVE MATERIAL COMPONENT FROM USED ABRASIVE MATERIAL SLURRY, AND CERIUM OXIDE RECOVERED THROUGH METHOD

摘要

Provided is a method for recovering an abrasive material component from used slurry having cerium oxide as the principal component of the abrasive material therein, the abrasive component recovery method being one in which post-recovery treatment of the abrasive agent and waste liquid is easy. Also provided is cerium oxide recovered through the novel recovery method. A method for recovering an abrasive material component from used abrasive slurry containing cerium oxide in the abrasive material thereof is characterized in that the abrasive material component is recovered by: adding a magnesium salt to the used abrasive slurry; coagulating the abrasive material component and causing the same to sediment from the abrasive slurry, which contains the abrasive material component and components derived from the material subjected to abrasion; and separating the solids and liquids.