metalresearcher
National Hazard
Posts: 758
Registered: 7-9-2010
Member Is Offline
Mood: Reactive
|
|
Making CaC2 using a DC welder
I repeated an earlier esxperiment of making calcium carbide which succeeded.
I put some charcoal with CaO powder in a crucible and put two carbon rods attached to a 140A DC welder into it.
I let it run a few minutes, which resulted in a very bright pinkish light and after cooling, I got a few chunks of (impure) CaC2 from the crucible.
The reaction is CaO + 3C => CaC2 + CO. The carbide is formed in a liquid state at a temperature well above 2000 C which freezes when cooling.
Throwing the carbide in water results in lots of C2H2 gas.
Here a video:
https://www.metallab.net/jwplayer/video.php?v=L2NsaXBzL0VBRi...
|
|
|
hissingnoise
International Hazard
Posts: 3940
Registered: 26-12-2002
Member Is Offline
Mood: Pulverulescent!
|
|
I thought about trying it a few times but in the end, I just ordered it off ebay ─ not as satisfying maybe, but a lot less effort...
|
|
|
Ubya
International Hazard
Posts: 1247
Registered: 23-11-2017
Location: Rome-Italy
Member Is Offline
Mood: I'm a maddo scientisto!!!
|
|
is it possible to measure the acetylene formed and from that calculate how much calcium carbide was made from the strarting reagents (just to have an
idea of the yield)
---------------------------------------------------------------------
feel free to correct my grammar, or any mistakes i make
---------------------------------------------------------------------
|
|
|
Texium
|
Thread Moved
29-11-2023 at 11:38 |
![[*]](images/xpblue/default_icon.gif){kind=icon}
