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A vacuum recycling equipment for refining the solar grade poly silicon and a method for refining the solar grade poly silicon
A vacuum recycling equipment for refining the solar grade poly silicon and a method for refining the solar grade poly silicon
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机译:用于精制太阳能级多晶硅的真空回收设备和用于精制太阳能级多晶硅的方法
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摘要
A vacuum recycling apparatus for refining solar grade polysilicon is provided which contains a vacuum degassing (VD) device 1 and a vacuum recycling (RH) device 2. By storing liquid silicon L in a bucket 12 in the VD device 1, controlling the pressure inside the VD and RH devices 1 and 2, and introducing inert gas into the apparatus, the liquid silicon L 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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