Oven built from free left-over heavy kiln fire bricks

I am sending a few pictures of what I built off of your guidance. Everyone loves it.

I had access to some free HEAVY firebricks that have never been used for a cement kiln. From a concrete company here in Kentucky, this company had them left over. The firebricks dimensions –
are: 8 1/2 x 7 1/2 x 2 1/2 inches in size. Naturally, I had to find out more about these heavy bricks.

The word I got back from my friend about the boiler (what I initially thought it was) is “It is a cement kiln. They use the brick to protect the steel shell from the heat.” The kiln gets between 2500 and 3500 Degrees Fahrenheit heat inside and operates under that temperature.

I was thinking that if the 8 inch of heavy firebrick grade is used to protect the steel shell of a large industrial kiln, I should be able to use it in both the floor and the ceiling with no any problem (in my smallish oven in comparison.)

I’ll look for a KY shirt for you in the new year.

Mel in,
Louisville, KY, USA