Looking for 6000 deg refractory
Looking for 6000 deg refractory
(OP)
Hello.
I am looking for a refractory that can withstand up to 6000 F, to hold large,(12 pound charge), thermit reactions.
I prefer something I can shape myself.
Thanks.
I am looking for a refractory that can withstand up to 6000 F, to hold large,(12 pound charge), thermit reactions.
I prefer something I can shape myself.
Thanks.





RE: Looking for 6000 deg refractory
The Lindsay site has a book on crucibles as well as the thermite book.
http://www.erico.com/products/CadweldPlus.asp
http://www.lindsaybks.com/bks4/thermit/index.html
http://www
RE: Looking for 6000 deg refractory
I've made a few runs using a 5000 F rated furnace cement, but it takes a beating and needs repair after each run. The secondary crucible is the problem. I have to hold the molten charge, about 1 to 4 pounds, at heat, without damage to the refractory, or uptake of refractory in the ingot.
Also proper IR and UV protection is in order as it throws off a lot of radiation.
RE: Looking for 6000 deg refractory
Is your secondary chamber acting as a float chamber for the slag? If the melt hits something as it's falling it will help the melt and slag separate.
What is your reaction crucible made from?
Are you coating your mold with anything?
An MgO wash will be helpful but will not completely protect the crucible. Again look out for moisture.
I'm try to find my information on additives for the slag that will make it more fluid to get a better float and also help lower the temperature.
There is some information about this process on the blacksmith and sword making net.
RE: Looking for 6000 deg refractory
The reaction crucible is cyledrical, with cone shaped bottom.
I have a bunch of magnets under the mould crucible to possibly help with slag seperation. ????
The MgO is a good idea.
The blacksmith/sword maker is probably me ;)
Thanks once again!