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Silicon dioxide, in the form of quartz, is in abundance around my local area and I would be interested in creating silicon as a separate element. My problem is that I don't know what to react silicon dioxide with to reduce it to silicon. I have read that it can be reduced with carbon but I couldn't find any information about the temperatures this takes place at. I am also aware that a thermic reaction can take place between aluminium and silicon when mixed with sulfur but I don't have any aluminium powder. Thank you in advance.

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    $\begingroup$ en.wikipedia.org/wiki/Silicon#Metallurgical_grade $\endgroup$ – ParaH2 Mar 3 '17 at 17:47
  • $\begingroup$ @hex can you build an answer around that reference? The given answer is rejected as not an answer, and for my part I am not convinced it would work. $\endgroup$ – Oscar Lanzi Mar 29 '18 at 16:42
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    $\begingroup$ @OscarLanzi When I post it a year ago the link was different as it is today. However if you read the wikipedia page and the references you'll find what you want. I have no time to read for others and as I am not a specialist of the question ... :-) $\endgroup$ – ParaH2 Mar 29 '18 at 18:02