Camroc37 - 21-8-2015 at 18:39
I heard you can make Sulfur Dioxide by roasting Pyrite. Is this true? If so, do you know the temperature it has to be and how to make sulfur from it?
I tried it with a butane torch and a few sparks appeared after about 25 seconds of direct heating...
Hawkguy - 21-8-2015 at 19:42
I thought pyrite was FeS2, and when heated it decomposes to FeS and releases vaporized Sulfur, the Oxide forming when it comes in contact with
atmospheric Oxygen... I could be wrong though...
Camroc37 - 21-8-2015 at 19:49
You may be right... That does make sense. I bet if I put it in a homemade pipe retort I could collect vaporized Sulfur at one end. I don't think
pressure would be a problem if the only products are FeS and Vaporized Sulfur in an oxygen-free atmosphere.
j_sum1 - 21-8-2015 at 19:54
I think that making sulfur from SO2 is probably not easy. Any gas to solid reaction is going to have considerable set-up and minimal product.
It is probably much easier to simply buy sulfur. It is available from garden supply paces as a soil acidifier. Often not that pure but it can be
purified.
The world actually has a large excess of sulfur at present. It is extracted from crude oil and stockpiled. In elemental form it is cheap, safe and ships easily. You should be able to get some without difficulty.
If you do need to synthesise it, reducing from bisulfite or thiosulfate is probably easier. Acidified thiosulfate precipitates elemental S quite
nicely. (And produces some SO2 as well if you do want to play with that.)
[edit]
"world" not "word" (#$%#@ keyboard)
[Edited on 22-8-2015 by j_sum1]
Camroc37 - 22-8-2015 at 12:00
I just wanted to try it for fun. Thanks for the info.