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Chinese Journal of Engineering
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Chinese Journal of Engineering
/
2014
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Article
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Tab 7
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Research Article
Process Parameters Optimization of Silica Sand Nanoparticles Production Using Low Speed Ball Milling Method
Table 7
Signal-to-noise ratio for each parameter and level.
Level
Ball to powder weight ratio
Volume of milling jar
Rotation speed
1
−9.3149*
−14.6563
−13.82
2
−13.8667
−13.5097
−13.20*
3
−18.0367
−13.0222*
−14.18
Range,
8.7218
1.6341
0.97
Rank
1
2
3
Optimum parameter level.