| 摘要 |
Method and equipment for production of high purity silicon (Si) metal fro m reduction of silicon tetrachloride (SiCI4) by liquid zinc metal. The Zn re duction of SiCI4 and the production of Zn by electrolysis of ZnCb take place in a common, combined reactor and electrolysis cell using a molten salt as electrolyte. The reactor and electrolysis cell may preferably be provided in a common housing which is divided into two or more communicating compartmen ts (13, 1, 2) by a first or more partition walls (15, 8, 7). Further, the el ectrolysis Of ZnCI2, performed by means of suitable electrodes, is taking pl ace in at least one compartment (1, 2) and the Zn reduction of SiCI4 takes p lace in at least one other compartment (13), where Zn metal flows between th e chamber/s (1,2) of the ZnCI2electrolysis to the chamber/s (13) of SiCI4 re duction, and where the electrolyte circulates between the chamber/s of ZnCI2 electrolysis to the chamber/s of SiCI4 reduction. The atmosphere in the cha mber/s where electrolysis takes place is preferably separated from the atmos phere in the other chamber/s by the first partition wall (15).
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