Joseph: I built a blast furnace about 15 years ago in my back Yard…
It measured 24" high x 12" inside diam. and it has a 4" thick wall
and a 4" bottom. I contacted a Refractory cement co. in Los angeles
and went and talked to the people and told them what I wanted and
they sole me the refractory cement to do the job I used a
Volkswagon wheel for the top and filled it full of the cement and
built a device to lift the top up and pivot it out of the way si
I could load the furnace with crucible and bronze.
I set it up to use bottle gas which I have used and it will melt
23lb. bronze in 45 minutes from cold start.
I went to El Camino Coledge and asked the prof if I could look at
their furnice and take measurements and he gave me permioion and it
came out great. I am a certified field welder for heavy gage metal
so it was easy to do the project.
If you need more help e-mail me and I will be glad to give you
further pointers on making the furnace. Yours: Billy S. Bates