Abrasive agent manufacturing method

摘要

Provided is a method for manufacturing an abrasive agent including a dispersant and also including cerium oxide as a main abrasive material component. The method involves: a step for recovering an abrasive agent component by salting out a spent abrasive material slurry by using a cation of an element of the first Group or second Group with an ionic radius of 80 pm to 160 pm in six-coordinate conversion, and solid-liquid separating the cerium oxide by coagulation and sedimentation; and a step for adding a dispersant including an anionic polymer to the abrasive agent component after the recovery.

主权项

1. A method for manufacturing an abrasive agent comprising a dispersant and further including cerium oxide as a main abrasive material component,
the method comprising: recovering an abrasive agent component by salting out a spent abrasive material slurry by using a cation which is at least one cation selected from the group consisting of a magnesium ion and a calcium ion, wherein said cation has an ionic radius of 80 pm to 160 pm in six-coordinate conversion, and solid-liquid separating the cerium oxide by coagulation and sedimentation; and adding a dispersant including an anionic polymer to the abrasive agent component after the recovery.