Optimum Design for Fine and Ultrafine Grinding Mechanisms Using Grinding Media

The paper presents a study on the effectiveness of the grinding process in an electromagnetic mill devoted to ultrafine grinding, and the influence of processing parameters on the mill’s performance. The research was focused on the optimization of the duration of the grinding process and selection of the grinding media type in order to obtain the highest relative increase of the selected particle size fraction. Copper ore with a particle size between 0–1 mm was used in the experiments. A model was created that determines the relationship between the processing time and efficiency of the grinding, and can be used for the optimization of the process. A comparison of the relative growth of particle size fractions in milling products was performed. The obtained milling efficiency results measured by the growth of the analyzed particle size fraction in the milling product confirmed that the best grinding media set includes a grinding medium with a diameter of 1 mm and a length of 10 mm.

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Determining the Optimum Diameter of Grinding Media Used for Ultrafine Grinding Mechanisms.

Journal of the Society of Powder Technology Japan ◽

10.4164/sptj.31.25 ◽

1994 ◽

Vol 31 (1) ◽

pp. 25-31 ◽

Cited By ~ 8

Author(s):

Tatsuo TANAKA

Keyword(s):

Grinding Media ◽

Optimum Diameter ◽

Ultrafine Grinding

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Determining the optimum diameter of grinding media used for ultrafine grinding mechanisms

Advanced Powder Technology ◽

10.1163/156855295x00121 ◽

1995 ◽

Vol 6 (2) ◽

pp. 125-137 ◽

Cited By ~ 7

Author(s):

Tatsuo Tanaka

Keyword(s):

Grinding Media ◽

Optimum Diameter ◽

Ultrafine Grinding

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Preparation Sericite Nanoflakes by Exfoliation of Wet Ultrafine Grinding

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.178.242 ◽

2010 ◽

Vol 178 ◽

pp. 242-247 ◽

Cited By ~ 2

Author(s):

Hao Ding ◽

Xia Xu ◽

Ning Liang ◽

Yue Bo Wang

Keyword(s):

Shear Stress ◽

Solid Content ◽

Diameter Ratio ◽

Mass Ratio ◽

Optimum Conditions ◽

Grinding Balls ◽

Grinding Media ◽

Ultrafine Grinding ◽

Ultraviolet Ray ◽

Grinding Time

Sericite nanoflakes were prepared by exfoliating sericite layers by wet ultrafine grinding. Their appearance morphologies and main properties were characterized. Optimum conditions were studied with the purpose of forming shear stress which was beneficial to the exfoliation of mineral flakes. The results indicated that sericite nanoflakes could be prepared. Mass ratio of grinding media to materials, diameter ratio of grinding balls, solid content of powders and grinding time had significant effects on the preparation. The thicknesses of sericite nanoflakes were 20-80 nm, and the transmittances of ultraviolet ray with wavelength of 190-220 nm were only 0.1%-1%. This demonstrated that sericite nanoflakes had the function of shielding ultraviolet ray.

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