Castable Refractory Cement

Re: Castable Refractory Cement

PostBy: CapeCoaler On: Tue Feb 03, 2009 10:38 pm

I am loking for a more 'commercial' product that is good to 3000*F.
Yes cast iron melts below that but I like to over design the parts.
CapeCoaler
 
Stoker Coal Boiler: want AA130
Hand Fed Coal Stove: DS Machine BS#4, Harman MKII, Hitzer 503,...
Coal Size/Type: Pea/Nut/Stove

Re: Castable Refractory Cement

PostBy: baldeagle On: Wed Feb 04, 2009 2:21 pm

CapeCoaler: Spent most of my life in the basic steel industry, two years ago I needed some castable refractory to
use in my coal stove, the angle iron steel retainer (basic "U" shape) that held the fire brick in place on the two sides
and the back of my front-loading Hitzer 354 had warped and I wanted to get the brick back against the walls. (ashes had
gotten behind them - suspected I was losing heat transfer) I cleaned the stove, reset the fire brick against the steel sides
and the just trowelled a 45' degree shelf above the tops of the bricks hoping to hold them in place once the castable setup.
I used a material that was left over from a blast furnace stove job site, my friend informed me the spec was for "zero"
(that means in real life- near zero) expansion and 3000F service life. The material was "Greenpatch 421" supplied by
Harbison-Walker / Narco ......... It looks today the same as then except for some glassing/shine to the surface. One point you may wish to remember is a fire brick should have a permanent modulus of expansion and you will have cracking
if the bricks have not yet been in service at high temperatures. This material was premixed, I simply trowelled it on and there it stays. I would guess it can only be removed with a hammer and chisel (or by a jackhammer in the plant.)
If you cannot find this is Mass., try an industrial supply house; locally we have a "Graingers" that sells a great many industial products.
baldeagle
 
Stove/Furnace Make: Hitzer 354
Stove/Furnace Model: Hitzer 503

Re: Castable Refractory Cement

PostBy: baldeagle On: Wed Feb 04, 2009 2:25 pm

CapeCoaler: just looked on the internet, this material came up a $57/pail at RefractoriesWest -- I would guess it must be readily available ... they say 3200F, my friend was talking "Service Temperature"
Good Luck, baldeagle
baldeagle
 
Stove/Furnace Make: Hitzer 354
Stove/Furnace Model: Hitzer 503

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Re: Castable Refractory Cement

PostBy: CapeCoaler On: Wed Feb 04, 2009 5:42 pm

Thanks baldeagle!
Thanks for the testimonial on the greenpatch 321!
http://www.hwr.com/
ANH is the company that absorbed AP Green, North American and Harbison-Walker and carries their lines of refractories.
They have a office in West Haven CT.
AP Green also made the fire brick in the Russo and I suspect the refractory they used came from the same place.
I have a phone number for one of the 'old-timers' that worked for AP Green as a chemist and that should yield the info I seek.
Yes photos you shall have!
CapeCoaler
 
Stoker Coal Boiler: want AA130
Hand Fed Coal Stove: DS Machine BS#4, Harman MKII, Hitzer 503,...
Coal Size/Type: Pea/Nut/Stove

Re: Castable Refractory Cement

PostBy: jpete On: Thu Feb 05, 2009 7:31 pm

I am on another forum with a guy who worked at AP Green. If you hit a dead end, let me know and maybe I can hook the two of you up. Who knows, might be the same guy!
jpete
 
Hand Fed Coal Stove: Harman Mk II
Coal Size/Type: Stove, Nut, Pea
Other Heating: Dino juice

Re: Castable Refractory Cement

PostBy: Scottscoaled On: Thu Feb 05, 2009 8:01 pm

So how much do the curved fire bricks actually cost? I have a monster hand fired hot air furnace that needs some new bricks and was wondering where and how much? :) Scott
Scottscoaled
 
Stoker Coal Boiler: EFM 520x4, 700. Van Wert 1200.
Hot Air Coal Stoker Furnace: EFM 150, Keystoker 150
Coal Size/Type: Lots of buck

Re: Castable Refractory Cement

PostBy: CapeCoaler On: Thu Feb 05, 2009 8:29 pm

http://www.sheffield-pottery.com/Bricks_and_Refractories_s/24.htm
For the normal bricks; a nice chart with sizes and some pricing.
The funky stuff is the custom cast or extruded brick like the warm morning corner vented brick.
The Newcastle stoves have a brick cast from refractory and are not standard brick sizes.
There are metal forms that bolt together and the refractory is poured in then poped out when dry.
You can cast it in place also, just make sure your form will not leak much!
Cardboard and some bracing, then start a small fire to cure and burn out the form!
You milage may vary, there are many ways to skin this cat!
CapeCoaler
 
Stoker Coal Boiler: want AA130
Hand Fed Coal Stove: DS Machine BS#4, Harman MKII, Hitzer 503,...
Coal Size/Type: Pea/Nut/Stove

Re: Castable Refractory Cement

PostBy: JB Sparks On: Thu Feb 05, 2009 8:55 pm

CapeCoaler, been following this thread and am interested to know what your going to use to make your own bricks. please post your reseach results. Thanks
JB Sparks
 
Stove/Furnace Make: Harman - Chubby
Stove/Furnace Model: Harman: SF160 - Chubby Sr.

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