| 摘要 |
<p>Disclosed is a method for removing impurities from a flux, which is characterized in that the impurities in the flux are reduced by heating and melting the flux containing the impurities and blowing a processing gas that contains a halogen gas into the flux. The method is capable of effectively reducing impurities, especially boron and phosphorus in a flux that is used for the production of high-purity silicon for solar cells and the like by a metallurgical process. As a result, a flux in which boron, phosphorus and the like are reduced can be obtained at extremely low cost.</p> |
