Try an aqueous HF solution in a plastic ( Teflon) vessel. Careful with HF solutions they are very toxic. Look up the properties of Hf before use
Yes, as DrCMS said I intend to use this on borosilicate glass, which would also be damaged, thanks for your respone nonetheless.
Did you read the actual question before you wrote your answer?
Try reading it again paying particular attention to this part.
The mix itself is quite difficult to clean from the bead after it has cooled which led me to wonder if there are chemicals that would dissolve the mixture of kaolin and alumina hydrate while not damaging the glass.
HF will dissolve the glass so is not suitable.
To be honest I do not think there is a chemical solution to this problem.
Dispersants poyacrylate or otherwise are designed to allow high solid slurries to be pumped etc. Kaolin mixed with water makes a paste but if you add a small amount of polyacrylate dispersant say 0.1% you can prepare a mobile slurry. The kaolin does not dissolve; the polyelectrolyte absorbs on the the surface of the particles and as opposite charges repel it prevents the particles sticking together allowing the high solid slurry to flow. If the kaolin is baked onto a glass surface dispersants will not help much.
Anything that will actually dissolve the alumina or kaolin is also likely to dissolve the glass such as NaOH or HF solutions.
I understand what you're saying, I figured that an acid or base that was strong enough to dissolve or turn the kaolin mix into a past would likely damage the glass.
Do you know if their is anything that can be added to the kaolin / alumina mix that would allow it to dissolve or break down under water / other substance, while still being able to withstand the heat from the torch? Perhaps something such as NaCl could be added to the mix before you put it under the torch, which might break the kaolin / alumina mix down when placed in water, although I'm sure the high heat from the torch will limit the possible choices.
Thank you for your insightful reply!