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VACUUM RECYCLING APPARATUS AND METHOD FOR REFINING SOLAR GRADE POLYSILICON
VACUUM RECYCLING APPARATUS AND METHOD FOR REFINING SOLAR GRADE POLYSILICON
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机译:真空回收装置和精制太阳能等级多晶硅的方法
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摘要
A vacuum recycling apparatus for refining solar grade polysilicon is provided which contains a vacuum degassing (VD) device and a vacuum recycling (RH) device. By storing liquid silicon in a bucket in the VD device, controlling the pressure inside the VD and RH devices, and introducing inert gas into the apparatus, the liquid silicon is stirred for the removal of impurities. With the present invention, solar grade polysilicon can be directly produced with a specified purity, significantly reducing the production time and cost.
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