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Bones break down due to calcification at approximately 760 to 982°C. The shards and fragments left behind that haven't completely broken down into ash are processed in a cremulator (a specialised food processor/small grinder) turning the rest into a white/grey ash.
Anything will burn with enough temperature and a cremator furnace is somewhat hotter than an industrial oven and more so than the domestic whitegoods version you bake your chicken in.
Even with domestic ovens, there are pyrolytic ovens that clean foodstuff in your oven that turn left overs into ash.
Pyrolytic can reach temps for cleaning at around 500°C whilst normal ovens only 220°C, that's why nothing happens to the chicken bones.
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[–] UncleDoug 0 points 1 point 1 point (+1|-0) ago
Bones break down due to calcification at approximately 760 to 982°C. The shards and fragments left behind that haven't completely broken down into ash are processed in a cremulator (a specialised food processor/small grinder) turning the rest into a white/grey ash.
Anything will burn with enough temperature and a cremator furnace is somewhat hotter than an industrial oven and more so than the domestic whitegoods version you bake your chicken in.
Even with domestic ovens, there are pyrolytic ovens that clean foodstuff in your oven that turn left overs into ash.
Pyrolytic can reach temps for cleaning at around 500°C whilst normal ovens only 220°C, that's why nothing happens to the chicken bones.
[–] clamhurt_legbeard ago
Yes, I actually linked to one in my response.