Methods for producing polysilicon~~Siemens? What else?
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Methods for producing polysilicon~~Siemens? What else? Methods~~Which one is better~Are there any differences? I’ve just started working with polysilicon production~ I don’t know what method we use
The mainstream methods include the Siemens process, the fluidized bed process, and physical metallurgy methods; of course, there are also VLD, plasma, and similar techniques. It mainly depends on the type of reactor used in the reduction process; the Siemens method employs a reduction furnace to produce rod-shaped silicon ； The fluidized bed method uses a fluidized bed to produce granular silicon ； Physical metallurgy methods should involve metallurgical furnaces; what comes out should be silicon blocks (this is not clear). Of course, there are also differences among the various methods in terms of the processes used; for example, the raw material for the fluidized bed method can be silane gas, or it can be trichlorosilane in the case of a fluidized bed process. At present, the fluidized bed method appears to be more advanced
I know about the exhaust gas in the Siemens process for zinc recovery after electrolysis using zinc chloride
What was said upstairs refers to zinc reduction, right..........................
3# novoland1 I would like to ask about the electrolysis principle of zinc chloride.
Is it based on the same principle as electrolytic aluminum production...
It is mainly an improved version of the Siemens process; the technology is quite mature