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Inside an oxygen concentrator
Any ideas how much O2/N2 ratio these devices produce normally ?

I am currently after a discarded ...
12-11-2016 at 00:03
by: metalresearcher
Pretty Pictures (2)
Aluminum with silver sand (i.e. rather pure SiO2) heated in an electric arc to the boiling point of ...
7-11-2016 at 13:23
by: metalresearcher
Which vacuum pump ?
What I want to do with it ?
Vacuum distillations of aqueous solutions, low pressure experiments wit ...
5-11-2016 at 09:19
by: metalresearcher
Which vacuum pump ?
I am looking for a vacuum pump for obtaining pressures preferably under 0.01 bar.
I found several o ...
5-11-2016 at 02:12
by: metalresearcher
Carbon Foam Refractory Made From Bread
I took the 'bread char' out of the cooled wood stove.
The 'bread char' is very fragile. It breaks e ...
4-11-2016 at 00:11
by: metalresearcher
Carbon Foam Refractory Made From Bread
Just put a roll of bread wrapped in aluminium foil into the wood stove. I am curious how this turns ...
3-11-2016 at 12:47
by: metalresearcher
Making a really HOT electric resistance furnace
Great tips !
I already have experimented with electric arcs. Making CaC2 from CaO + charcoal, boili ...
1-11-2016 at 11:17
by: metalresearcher
Making Al powder yourself ?
How can I get a ball mill ?
On ebay I found some but costs thousands of dollars, probably for indus ...
1-11-2016 at 10:47
by: metalresearcher
Making Al powder yourself ?
I have a box of Al lathings, saved from lathing aluminum.

Is it possible to downgrind it to Al po ...
31-10-2016 at 12:45
by: metalresearcher
Water >> H2 and 1/2O2 electrolysis
Where can I get such a device (Hoffmann apparatus) ?

Ebay has it but seller ships within US only ...
29-10-2016 at 00:48
by: metalresearcher
Making a really HOT electric resistance furnace
Interesting article.
It also states that metals like Mo, W or Ta are rather useless as they oxidize ...
26-10-2016 at 07:50
by: metalresearcher
Making a really HOT electric resistance furnace
In the largest [url=https://en.wikipedia.org/wiki/ZrO2]online chemical textbook[/url] is stated that ...
24-10-2016 at 12:33
by: metalresearcher
Making a really HOT electric resistance furnace
The Nernst lamp might be an interesting source as it can be used in open air.

Preheating up the N ...
24-10-2016 at 08:50
by: metalresearcher
Making a really HOT electric resistance furnace
I have a kanthal furnace (http://kanthal.velp.info) which is very controllable and reaches 1100 C.
...
23-10-2016 at 11:50
by: metalresearcher
Potassium metal from K2CO3 + charcoal
https://www.youtube.com/watch?v=crtDLgAn8CA

I repeated an experiment done years ago, but now used ...
9-10-2016 at 07:28
by: metalresearcher
Making refractory from CaO ?
I have some CaO and want to make firebricks in which I can deploy an electric arc with a 150A DC wel ...
1-10-2016 at 22:48
by: metalresearcher
Flushing 8 liters Hg through the loo on YT, unsafe ?
This guy ('Cody's lab') has a special setup outdoor loo (not used for peeing and pooping) through wh ...
1-10-2016 at 22:45
by: metalresearcher
Chlorate from hypochlorite
Electrolyzing NaCl solution yields ClO- which will be oxidized to ClO3- by the electric current. Goe ...
6-9-2016 at 11:15
by: metalresearcher
Mg burns in air, Al not even when heated with KNO3 ?
When I melt a tiny chunk (1g) of Mg metal and add a knifetip of KNO3 to it, it starts burning.
I di ...
6-9-2016 at 11:12
by: metalresearcher
What's the most expensive substance you've bought?
Metallic 24ct gold, but not for chemistry use, but for jewelry making. Once I got 80 grams of Au met ...
4-9-2016 at 00:50
by: metalresearcher
Acid and Base slags in non-aqueous environment ?
I sometimes read about acid slags (containing much SiO2) and basic slags on top of metal melts in me ...
3-9-2016 at 09:29
by: metalresearcher
File hosting for videos or other files - FTP access
Get a VPS (a server running on a hosting provider).

Here in the EU we have Strato (www.strato.com ...
2-9-2016 at 22:52
by: metalresearcher
Most overrated and underrated hazardous chemicals?
What about ClF3 ?
I think that is the nastiest chemical which exists in the sense of oxidizing.

...
31-8-2016 at 11:41
by: metalresearcher
CaSO4 + Al powder + Zn snippets: like Thermite
[rquote=459294&tid=68621&author=blogfast25]
The reaction:

CaSO[sub]4[/sub] + 2/3 Al ===& ...
29-8-2016 at 11:19
by: metalresearcher
CaSO4 + Al powder + Zn snippets: like Thermite
[rquote=459217&tid=68621&author=blogfast25]Careful with the slag: contains quite a bit of Ca ...
28-8-2016 at 11:35
by: metalresearcher
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