| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of reutilizing a silicon powder waste, which has been piled up at a disposal site or incinerated in an incinerator heretofore, as a raw materials for such as solar batteries and deoxidizers. SOLUTION: In the method, a silicon powder 8 waste is received in a die 6, and by sintering it highly densely by the discharge plasma sintering method at temperatures of 500-2,000°C in a non-oxidation atmosphere to causing a redox reaction, the high purity silicon can be easily produced. COPYRIGHT: (C)2009,JPO&INPIT
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