It would likely work, although I'd be worried about the potentially harmful fumes and molten metal that would ensue. Using an incinerator like they did in Mr. Robot would be better, if you can get access to one.
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How about taking it to a Crematorium:unsure:
https://www.youtube.com/watch?v=kJTclbBKxKk
Why not just take a sledge hammer to it and bust it into a 1000 pieces lol
if it is Nokia, then hard to destroy ;)
I would try a hammer
Put the phone on a small rock, like a teeter totter, then drive over it with a car.
Throw it from the Mount Everest Lol:lol:
Also watch out for flying parts when the battery ignites inside of the casing as it will allow the pressure to build up before release, ie. a very low powered grenade effect may occur.
Phone's have been known to explode... shoot it with a sniper rifle from 100 meters away.
Install the latest IOS version on it??? :lol: