dust free refractory materials
dust free refractory materials
(OP)
I am looking for a refractory material that is not dusty to the touch. Something like a piece of ceramic cookware would be perfect. I have scoured the web and talked to suppliers but have not found anything. The part is a disc 4" diameter x 1" thick with a hole in the center. I would like a thermal conductivity below 1 W/m·°K. The max service temperature is 700 C. Does anyone have a suggestion for a material or a supplier in the US?





RE: dust free refractory materials
Perhaps a piece of ceramic fibre millboard with a coat of rigidizer?
RE: dust free refractory materials
RE: dust free refractory materials
By reading their product data sheets if the thermal conductivities are too high you can use a multi-layer structure with insulating (dusty) refractory on the cold side and ceramic-glazed brick or just thin tile on the hot side.
Boilerone
RE: dust free refractory materials
I couldn't find anything on the HWR webpage and haven't gotten the right person on the phone yet. Do you have a link to specific product I could look at? What are these glazed bricks usually called by the manufacturer?
RE: dust free refractory materials
RE: dust free refractory materials
It's best to talk directly to their sales or technical person since you have a quite special application and dimensions.
RE: dust free refractory materials
f the insulation is going to be a working floor it will require special attention and probably require a composite structure.
With the information given a Mica based material would be ideal but your temperature is a little high.
I would give any of the manufacturers a call if something looks close to your requirements.
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RE: dust free refractory materials
It has a small amount of dust but it works. The materials that were dust free on their own were too dense and thus too high in thermal conductivity. So a less dense material with a coating was the compromised solution.
RE: dust free refractory materials
Russell Giuliano
RE: dust free refractory materials
RE: dust free refractory materials
Typical method to deal with your problem (thermal conductivity too high) is to use a two-layer design which has an 'insulating refractory' layer between the hot layer and the part that you want to protect.
It is a very common design practice.
Boilerone