NAIGAI CERABEADS#174; 60 : PRODUCTS ITOCHU CERATECH CORP
The test sample heated by explosive heat and cooled to room temperature was loaded into a magnetic ball mill (5L volume) together with 40 pcs of alumina balls of 20each and crushed for 20 mins. After crushing, the grain size distribution was measured and the grain fineness number (AFS) was obtained by