Grinding of Calcite to Nano-Size: Effect of Mill Capacity and Grinding Media Shape
Abstract
The fabrication
of nano-sized materials with conventional ball mill is a very difficult
process. But it is not impossible. When the capacity of the mill is reduced,
the nano-sized product can be reached. In this study, nano-sized calcite was
produced by conventional ball mill. Firstly, the mill capacity (feed amount)
was reduced, then, the effect of the grinding media type was investigated.
Spherical ball and cylindrical shaped “Cylpebs” are used as grinding media. Comparative tests have been performed using Cylpebs and spherical balls
in a 20 tph capacity industrial ball mill under the same conditions. The
results showed that Cylpebs was more efficient than conventional spherical balls. In addition, the capacity of the conventional ball mill for the fabrication
of nano-sized products should be significantly reduced. When the mill capacity
is reduced by 75% (5 tph) and grinded with Cylpebs, the fineness (d90)
of the product reaches 1300 nanometers
Keywords
References
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- [2] Hacıfazlıoğlu, H. 2018. Ultrafine Grinding of Kokaksu Bauxite ore via Stirred Mill and Ball Mill, Open Journal of Nano, Vol.3, no.1. p.1-4.
- [3] Shi, F., 2004. Comparison of grinding media-Cylpebs versus balls.Miner. Eng. 17, 1259–1268.
