Patent ID: 9421583
Filing Date: 2016-08-23
CPC Classification: B08B,C01B,C30B

Claim Text:
1. A rinsing method for a polycrystalline silicon lump which is obtained by cutting or breaking a rod of polycrystalline silicon, comprising steps of: a providing step of providing: a charging step of charging the polycrystalline silicon lump in the wash basket; a supplying step of supplying rinse water to the wash tank from a bottom part of the wash tank continuously; and a swinging step of swinging the wash basket in the inner cage in the rinse water with overflowing the rinse water from an upper portion of the wash tank, wherein powders or chips of silicon and impurities are removed from a surface of the polycrystalline silicon lump in the wash basket, the powders or the chips and the impurities fallen from the wash basket through the through holes and trapped at the inner cage are recovered from the inner cage, and the powders or the chips and the impurities floating in the rinse water are discharged from the wash tank along with the rinse water.