Analisa Sifat Magnetik Dan Komposisi Partikel Pasir Alam Sungai Rokan Provisi…

The ball milling time affects the magnetic properties its product. Research on the magnetic properties and the product composition of natural sand of the Rokan River as a function of optimum time in ball milling has been done . The natural sand samples of Rokan River that has collected with a mass of 10 Kg were dried under the sun ray before the separation process between magnetic and nonma…