[eric2011 (OP)]

Hello.

If I take an oxyacetylene torch which can reach temperature up to 3200 C and point underneath a ceramic crucible filled with aluminum oxide which melts at 2100 C will the torch be able to melt the powder?

[chiralSPO]

What's the crucible made of? There are ceramics that can handle that, and ceramics that can't...

[eric2011 (OP)]

What's the crucible made of? There are ceramics that can handle that, and ceramics that can't...

I do not know but the seller told me it can stand more than 3000 C

[wolfekeeper]

You might well need more than one torch to get the whole crucible up to temperature.

[Bored chemist]

https://en.wikipedia.org/wiki/Verneuil_process

[evan_au]

Would an electrolytic process achieve what you are trying to do, but at a lower temperature?

[chiralSPO]

you can generate oxygen and hydrogen electrolytically, and burn them together in a torch flame with kits like this (http://hydrogengarage.com/h2eat.html). I probably wouldn't muck around with this sort of thing myself these days, but you can get some really high temperatures and rates of heating using hydrogen/oxygen...