| 摘要 |
The present invention provides a method and an apparatus for fracturing polycrystalline silicon, and the method comprises steps of placing the polycrystalline silicon in a water tank containing water; applying an instant high voltage to the water tank so that high-voltage discharge occurs in the water of the water tank to fracture the polycrystalline silicon. The apparatus comprises a high-voltage transformer (B), a high-voltage rectifier (G), a charging capacitor (C), a disconnecting switch (K), a water tank (F) containing water, and a first electrode (1) and a second electrode (2) which are submerged in the water tank (F), the first electrode and the second electrode being disposed with a certain distance therebetween, wherein a primary winding of the high-voltage transformer (B) is connected to mains supply, a first terminal of a secondary winding of the high-voltage transformer is sequentially connected to the high-voltage rectifier (G), the disconnecting switch (K) and the first electrodes (1), a second terminal of the secondary winding is grounded and connected to the second electrode (2), and the charging capacitor (C) is connected between a common terminal of the high-voltage rectifier (G) and the disconnecting switch (K) and a common terminal of the secondary winding and the second electrode (2). The method and apparatus have advantages of simple process, uniform fragments and no metal contamination. |
