| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for efficiently manufacturing high-purity silicon dioxide using inexpensive diatomaceous earth. SOLUTION: The method for manufacturing high-purity silicon dioxide from diatomaceous earth is characterized in that powder granules of the diatomaceous earth are subjected to physical sorting. There are also provided high-purity silicon dioxide having purity of≥99.999% manufactured by the method for manufacturing and silicon for a solar cell obtained using the high-purity silicon dioxide as a raw material. COPYRIGHT: (C)2009,JPO&INPIT
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