Influence of milling parameters on particle size of ulexite material
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KünyeKütük, S. (2016). Influence of milling parameters on particle size of ulexite material. Powder Technology, 301, 421-428. doi: 10.1016/j.powtec.2016.06.020.
Commercial raw ulexite (U) materials were milled from 0 h to 8 h by using mechanical milling technique for var-ious initial powder size (−3mm;−75μm), ball to powder ratio (5:1; 10:1), and ball size (10 mm; 5 mm). Par-ticle size, morphology, elemental, and crystal structure measurements of the milled powders were performed. Inthe particle size distribution analysis, the smallestd50andd10values were respectively found as 8.846μmand790 nm for U_5m powder (obtained from that initial powder with−3 mm in size was milled by balls with5 mm in size) at 0.5 h. In the morphology analysis, the microstructure of the U_5m powder was observed tobe more homogeneous by means of milling process. In the elemental analysis, it was deduced that the U_5mpowder is not a pure compound. In the crystal structure analysis, it was determined that the crystal structureof the U_5m powder is exponentially deteriorated with increasing the milling time, and then it has become anamorphous structure at the end of 8 h. The crystalline size of the U_5m powder is reduced to 15.5 nm after 4 hof milling. The results of this study are considered to be useful for future nano studies and industrial applicationsof ceramic ulexite compound, which is a boron mineral.