Another perlite/clay question

Hello to everyone.

I have some experience building rocket stoves.  I use batchbox designs. I want to thank to all of you who share their knowledge.

I build in Croatia.

I want lower part of my heat riser (outside use dorncooking and baking) using clay/perlite mix. I have octogonal forms 30cm in diametar and will put 13 cm pipe inside (only to hold form, I pull it out after).
I have something that is called chamotte flour, basically it is a fireclay product that is sold with waterglass (sodium silicate).
3kg of cfine chamotte uses 1l of waterglass.
I have read all  clay perlite riser threads.

My decision is to mist perlite with water, than dust perlit with chamotte powder and than soak it in chamotte waterglass slip. I can put a bit of refractory cement also in the mixture.  Than I would pack perlite into forms.

Has anybody used these products? I think it would hold better if I mix perlite in chamotte waterglass solution than if I just dust the perlite and don't use waterglass.

Upper 50 cm of heat riser would be either clay perlite also and for the experiment 50 cm  long  130 mm fi inox chimney that has 5cm of rockwool inside.

This stove is not meant for turbo temperatures needed for heating space so I don't have and fear either for perlite to melt or steel to melt (ASI 316 0,6cm inox on the inside).

I can post a picture of a chamotte based product that I have on hand.

Best regards to all of you.

Hi Leopold.

We are always interested in learning about innovative ways people have combined their rocket making materials and what the results were.

Please share with us what you learn.