| 摘要 |
<p>PROBLEM TO BE SOLVED: To manufacture an abrasive material having high polishing perfor mance by reducing cost, and attain the processing of abrasive waste and reduc tion of weight. SOLUTION: This method of manufacture comprises a physical treating process making an abrasive waste mixing spent abrasive and impurities as a base material to remove impurities except the base material of the abrasive, heat treatment process for heating the impurity removed base material in a range of 1000 to 1700 deg.C temperature, and a classification process for classifying into a grain size within a specified value by crushing the base material after the heat treatment process. In this way, the material can be manufactured with high manufacturing yield, productivity and mass productivity, and the abrasive of stable new quality with a low cost is obtained.</p> |
