发明授权
US08968470B2 Graphite crucible for silicon electromagnetic induction heating and apparatus for silicon melting and refining using the graphite crucible 有权
用于硅电磁感应加热的石墨坩埚和使用石墨坩埚进行硅熔化和精炼的设备

Graphite crucible for silicon electromagnetic induction heating and apparatus for silicon melting and refining using the graphite crucible
摘要:
Disclosed herein are a graphite crucible for electromagnetic induction-based silicon melting and an apparatus for silicon melting/refining using the same, which performs a melting operation by a combination of indirect melting and direct melting. The crucible is formed of a graphite material and includes a cylindrical body having an open upper part through which a silicon raw material is charged into the crucible, and an outer wall surrounded by an induction coil, wherein a plurality of slits are vertically formed through the outer wall and an inner wall of the crucible such that an electromagnetic force created by an electric current flowing in the induction coil acts toward an inner center of the crucible to prevent a silicon melt from contacting the inner wall of the crucible.
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