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Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
I'd do a bit more research first, you need to check what happens with these elements at the proposed temperatures. I think the chlorine attacks the iron in the stainless at the grain boundaries. It causes 'pitting', so if it attacks iron in stainless, it will dissolve an iron vessel. I assume it forms ferric chloride, or something similar. The sodium might dissolve it as well.
You may need something inert, like tungsten, but, again, I'd check first.
EDIT: sodium chloride causes iron (steel) to rust (salt on the roads in winter?), molten sodium chloride will probably 'eat' it
EDIT: Phosphor bronze or monel 'may' be a better bet, they are both immune to seawater, but I'd still check first'
Registered Member #3324
Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
I don't believe that chlorine or sodium would dissolve the iron/stainless steel/ mild steel.
This guy seemed to have no problem:
I think the only time chlorine causes problems with iron and stainless is when it is wet chlorine (water vapor) which won't be an issue as the pipes and the chlorine are at a high temperature.
EDIT:
Having done some more research it seem the leading method is to have a long 'neck' at the bottom of the container which is watercooled, using the solid NaCl as an insulator to protect the clay, plastic or other at the bottom.
Registered Member #3324
Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
I want to go with a Downs Cell specifically, The Downs Cell is an improved version of the Castner Cell that works using Sodium Chloride as opposed to Sodium Hydroxide.
Registered Member #193
Joined: Fri Feb 17 2006, 07:04AM
Location: sheffield
Posts: 1022
Just or the record, hot glass is an electrical conductor. There are two ways to think about that, one is to consider it to be a problem. the other is to use it as the solution.
Registered Member #33
Joined: Sat Feb 04 2006, 01:31PM
Location: Norway
Posts: 971
Bored Chemist wrote ...
Just or the record, hot glass is an electrical conductor. There are two ways to think about that, one is to consider it to be a problem. the other is to use it as the solution.
The same method is also mentioned in "Procedures in Experimental physics" by Strong from 1938. The book is out of copyright and freely available on arcive.org . This procedure is described on page 536.
Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
There is a patent here which uses sodium carbonate and a molten lead cathode. Sodium is separated from the lead by vacuum distillation. No idea if it works, though
Registered Member #3324
Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
Ash Small wrote ...
There is a patent here which uses sodium carbonate and a molten lead cathode. Sodium is separated from the lead by vacuum distillation. No idea if it works, though
Now you are getting complicated! haha,
I think I might put this project on the shelf for now to come back to, Get a tesla-coil built first (Fucking hell... I still haven't made one haha)
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Downs Cell Electrical Insulator
