Can I melt aluminium oxide with a blow-torch?

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Offline eric2011

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Can I melt aluminium oxide with a blow-torch?
« on: 09/10/2015 15:14:16 »
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?
« Last Edit: 09/10/2015 21:55:28 by chris »

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Offline chiralSPO

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Re: Melting Aluminum Oxide
« Reply #1 on: 09/10/2015 16:10:23 »
What's the crucible made of? There are ceramics that can handle that, and ceramics that can't...

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Offline eric2011

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Re: Melting Aluminum Oxide
« Reply #2 on: 09/10/2015 16:22:07 »
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

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Offline wolfekeeper

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Re: Melting Aluminum Oxide
« Reply #3 on: 09/10/2015 16:51:05 »
You might well need more than one torch to get the whole crucible up to temperature.

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Offline Bored chemist

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Please disregard all previous signatures.

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Offline evan_au

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Re: Melting Aluminum Oxide
« Reply #5 on: 10/10/2015 00:40:36 »
Would an electrolytic process achieve what you are trying to do, but at a lower temperature?

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Offline chiralSPO

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Re: Can I melt aluminium oxide with a blow-torch?
« Reply #6 on: 10/10/2015 00:44:13 »
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...