Apparatus for fracturing polycrystalline silicon and method for producing fractured fragments of polycrystalline silicon

The present invention provides an apparatus which fractures polycrystalline silicon into desired size and can prevent the polycrystalline silicon from being contaminated by impurity from fractured teeth and roller outer peripheral surfaces so as to obtain a high-quality polycrystalline silicon and a method for producing the fractured fragments of the polycrystalline silicon. The apparatus for fracturing polycrystalline silicon has: a pair of rolls (3) which are rotated in a counter direction each other around parallel axes; a plurality of fracturing teeth (5) which are provided on and protruded radially-outwardly from outer peripheral surfaces of the rolls (3), and are made from cemented carbide or silicon material; and resin covers (45) being wound around the roll (3) in a state in which the fracturing teeth (5) penetrate thereof so as to cover the outer peripheral surfaces of the rolls (3).