D.I.Y Castable Refractory Cement

Ky Speedracer wrote:How thin do you think you can you roll it out so its still effective? 1 inch? Maybe 3/4 of an inch?
The reason I ask is that I have a crack in a Florence Hot Blast fire pot. I would like to keep it as thin as possible so it will be able to super heat the secondary air...

I made mine about 1" thick, but I think you should be able to go to 3/4". I don't think I would try to go much thinner than that though. I really do not know what effect the lining would have on the secondary air.

Randy

I made mine with castable HT ciment, just add water and pour in the mold. The mold comes from my wife office ash plastic can ...The plastic smooth surface gave a very good result and the tapered form was just like the fire pot's one.
Still like new.

My first d.i.y. fire brick will be a mixture of furnace cement and Perlite, both are easily accessible up here and relatively inexpensive. The ratio will be 4:1 Perlite to furnace cement by volume.

Are there any other recipes that folks have?

nortcan wrote:I made mine with castable HT ciment, just add water and pour in the mold. The mold comes from my wife office ash plastic can ...The plastic smooth surface gave a very good result and the tapered form was just like the fire pot's one.
Still like new.

That looks really good!

I am going to have to try my hand at making my own bricks in the richmond advanced . I have some castable refractory that I have never used and have been meaning to try and I think it is the same stuff you used . I was going to use it with the Pearl cannon heater I had .

nortcan wrote:I made mine with castable HT ciment, just add water and pour in the mold. The mold comes from my wife office ash plastic can ...The plastic smooth surface gave a very good result and the tapered form was just like the fire pot's one.
Still like new.

Man, did you get lucky with that perfect fitting trash can. Nicely done. I looked for something "fitting" like that for mine, but couldn't find anything. And the G111 fire-pot isn't even tapered.

Joeq, what is the diameter of G-111 fire pot?

Hi Mike, Off the top of my head I wanna say 11 3/4"s, but it's late and I've been driving for 4 hrs, so I won't swear by it.
Some 5 gal. buckets come real close. But not close enuff.

joeq wrote:Hi Mike, Off the top of my head I wanna say 11 3/4"s, but it's late and I've been driving for 4 hrs, so I won't swear by it.
Some 5 gal. buckets come real close. But not close enuff.

a 10 inch sona-tube could give you approx. 7/8" thickness of fire brick.

nortcan wrote:I made mine with castable HT ciment, just add water and pour in the mold. The mold comes from my wife office ash plastic can ...The plastic smooth surface gave a very good result and the tapered form was just like the fire pot's one.
Still like new.

nice job nortcan.How much refractory cement was required to do the job?Also,how easily does it pour thru to the bottom of the mold,and how did you cure it?

Since we're getting so many threads about roughly the same topic, I took the liberty of starting a thread with the title, "Fire Bricks and Linings" with the intension of having one thread that will turn up links to all the other threads not using those same words. There's also info on firepot linings.

Fire Bricks and Linings - Making Your Own.

This way one thread with the most common search title should lead to all the wealth of info on making molds, bricks, and linings.

If anyone knows of other threads that I haven't put a link to, please add it to the post.

Thank you,
Paul