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@ mleku
2025-04-06 14:32:23
the reason for the different results at different temperatures is that at sufficiently high temperatures the phosphoric acid in the calcium triphosphate dissociates as elemental phosphorus and boils off... note that this has other possibly unwanted effects like forming phosphine gas and thus it's important to ventilate the furnace well if you are calcining bones like this.
also note that as well as being great at capturing fluoride you can directly use this with sodium/potassium silicate to make concrete