Polysilicon production method
Thread Content
We plan to launch a polysilicon project to utilize the excess chlorine in enterprises. There are currently many methods for polysilicon production, such as the modified Siemens process, silane thermal decomposition method, fluidized bed method, thermite reduction method, etc.; we’re not sure which method is the best
Consuming chlorine? What’s the explanation... The most commonly used process for polysilicon production nowadays is the modified Siemens method; some companies still use the metallurgical method. The silane pyrolysis method requires further process improvements to be made at a larger scale. The fluidized bed method represents a modification of certain aspects of the modified Siemens method. As for the thermite reduction method mentioned by the original poster, I don’t know much about it.
The most commonly used process for polysilicon today is the modified Siemens method, which accounts for about 70% of production. Some companies still use the metallurgical method, but the purity obtained is not very high. The silane cracking method requires process improvements to be made at a larger scale, and safety is a concern ； The fluidized bed method is a modification of some processes in the Siemens process; I am not familiar with the thermite reduction method mentioned by the original poster.
The metallurgical method is the direction for future development! Optimistic about the metallurgical method