Investigation on grinding impact of fly ash particles and its
2019. 6. 1.· To find the ultrafine particles of fly ash, Blaine's fineness test was performed with 15, 30, 45, 60, 120 and 180 min of ball milling to produce the ground fly ash. The specific surface area of fly ash particle and sieve residue Vs Grinding time is shown in Fig. 1.From this figure, it can be observed that the surface area of particle is gradually increasing with increase in ball mill grinding