What is the cause of the explosion of the intermediate frequency furnace charge?

​​One of the reasons for the explosion:

After the micropowder is introduced into the intermediate frequency furnace, many small voids are filled, which reduces the air permeability of the intermediate frequency furnace charge and causes bursting.

Reason 2 for the burst of the intermediate frequency charge:

The zeolite-like calcium-aluminum-silicon hydrate or gel formed in the traditional intermediate frequency charge rarely forms an exhaust channel due to the decomposition of the hydrate before 300 degrees, and after 300 degrees, rapid dehydration releases a large amount of water vapor and causes explosion.