Process Parameters Optimization of Silica Sand Nanoparticles Production Using Low Speed Ball Milling Method

Table 1

Parameters selected and levels for each parameter.

Parameter	Level 1	Level 2	Level 3
Ball to powder weight ratio (BPR)	20 : 1	15 : 1	10 : 1
Volume of milling jar	5.6 L	1.8 L	1.0 L
Milling speed	100 rpm	95 rpm	90 rpm