Method for Producing High Purity Silicon
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United States of America Patent
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Issued Date -
Dec 18, 2008
app pub date -
Feb 28, 2006
filing date -
Mar 7, 2005
priority date (Note) -
Abandoned
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Abstract
An object of the invention is to provide a method for producing a large amount of inexpensive and high purity silicon useful in a solar battery. The method includes steps of preparing molten silicon, preparing a slag, bringing the molten silicon and the slag into contact with each other, and exposing at least the slag to vacuum pressure.
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