Nikko Posted January 12, 2014 Posted January 12, 2014 The stoichiometric ratio is 2.96 grams of iron III oxide per gram of aluminium. It makes a very nice, very easy 3 to 1 ratio. And if it's not labelled what kind of oxide it is, Iron III is a brownish red, very similar to a common housebrick. The yellow and black look very different, it's super easy to tell the difference. It just popped into my head, but my sister has video of us lighting our Christmas bonfire with 400 grams of thermite (I have done a few 2 kilo burns as well). I'll try and get it for this thread. I will mention right now as well that I made a potentially disastrous mistake while preparing the charge, to prime you for the video. I'm seriously glad everyone stood behind me, as asked. I was even a smidgeon too close.
MWJ Posted January 24, 2014 Posted January 24, 2014 I just bought some 30 micron or 500 mesh AL. for thermite, Does that work well with Black Iron Oxide? I want a good amount of molted metal. Or is the -325 Mesh better?
maho Posted February 6, 2014 Posted February 6, 2014 I've got some queries regarding Thermite.... Can Thermite be made with Aluminium + Iron (III) Oxide, as well as Aluminium + Iron (II) Oxide, or is only one type of Iron Oxide suitable? If adding Aluminium and Sulfur to make ignition easier, what's the percentage of Al + S (not just Sulfur on it's own) required as part of the Iron Oxide + Aluminium thermite mix?If you're interested in thermite you should take a look at this: http://www.amazingrust.com/Experiments/how_to/Thermite.htmlIt lays out all of the common types. I'm not sure about sulfur but I have used ~1 gram of KNO3/Al/sulfur flash on top of the thermite with a simple homemade fuse running into it. The flash burns slow and hot enough to get the reaction going without magnesium. It's cheaper, easier and seems safer than using magnesium. As for the lock, thermite isn't going to be easy to contain on the lock long enough. It will begin to drip off of it. Just use a hack saw.
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