RE:OK that is cool!Budaman wrote: Just so I understand what people have been writing about Purevap because I am not a scientist. PYR has managed to produce 4 Nines purity in the lab WITHOUT using crystallization because the sample sizes are limited? And at the pilot stage, when the sample sizes are larger, and they can use crystallization of the molten silicon, the purity levels are even higher because any impurities get forced to the edges?! Wow. I am buying more shares Monday!!!!! In my opinion only. Thanks-Buda
That's almost right budaman.
the small size of the samples being produced, actually makes it very much harder to achieve 4N or any high purities and not because of a lack of crystallization either. This actuall proves PUREVAP is a superior technique on its own.
if a sample size is only 8 grams ( the approximate maximum size reported so far), a contaminant of as little as 0.008 grams is present in that sample, which could be a tiny speck of dust from a tool or container in which the sample was made.
if the sample was 1000 grams the same speck of dust would result in a much higher overall purity.
So by simply increasing the size of the manufactured silicon batch the purity is much easier to control.
the DIrectional Solidification process causes the silicon to cool in a way that promotes crystallization to ocour, which further forces non silicon atoms out of the crystal formation.
this results in a much higher purity of silicon, but for practical reasons is more difficult to do in small samples, but is very easily done in larger samples of molten silicon.
hope this makes things a bit more clear.
You probably will have a great opportunity to buy more shares very cheap next week because of the pp shares hold time ending, I'm planning to top up too.
KD