31 May
2007
31 May
'07
10:24 a.m.
OI let's not forget Thermite! You combine rust and
powdered aluminum, ignite it (with a *storm match*,
whatever that is), and it produces 6000 degrees F.
Useful for welding train rails together, and rudders
on battle ships.
I saw an episode of "Beyond 2000" where some
scientists were experimenting w/something similar to
*hopefully* produce rocket propulsion.
--- Chuck Guzis <cclist at sydex.com> wrote:
See:
http://www.lateralscience.co.uk/AtomicH/AHW.html
But for most anything else, oxy-acetylene is fine.
A few years ago, I remember seeing a welding rig for
jewelers that
used electrolysis on water to create fuel and
oxygen. The thing drew
something like 10 amps at 240VAC and produced a very
tiny flame.
There was so little heat produced (although the
flame temperature was
pretty high) that you could pass your hand through
the flame.
IIRC, gold is usually deplated from other metals
(and out of ore)
with sodium or potassium cyanide. At least that's
what I recall from
reading about a "heap leach" gold mining operation.
Cheers,
Chuck
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