Not the sort I would choose, you want castable refactory , it is made from crushed fire brick and high temperature cement . Normally comes in 60lb bags at around $30 a bag. The one I use is rated at 1200c but you can also get 1600c for double the cost.
I don’t know where you live but I live on a island near France although I buy my product from England. There are many outlets in the U.K. and France so I assume there will be something near you where ever you live. There might be a key search word like kiln supplies or forge supplies or castable refactory or pizza oven supplies? Here is my supplier www.castreekilns.co.uk/dense-castable-189-c.asp
You can make your own firebrick or any shape you want. Remember that expansion from hot spots can cause it to crack, though not a big deal. Keep shapes simple and use several pieces instead of one or two complex sides.
Got it at a local furnace firebox MFG company, about $40 USD for a 55 lb bag.
Keep it away from dampness if you don't use it all at once
Post by keithturtle on Mar 23, 2020 19:38:20 GMT -8
I also tried some home brew refractory, batch was made with 1 part alumina cement, 1 part fireclay, 2 parts mason sand and 2 parts perlite sifted to 1/8" or less. Add the fire clay last and use as little water as possible; ram it into forms.
This was used to line a clay drainage tile, cast about 3/4" thick wall as a smelter or forge. So far it has held up well but I've not yet got it really hot, just heating metal red/orange to bend.
The alumina cement came from a drilling supply firm, 5 times the cost of portland about $60 for a 94 lb bag.
Is this the right stuff with which to attempt a cast core? Since I have no idea what I'm doing, this seems to be the best way forward.
The Rutland in your post is Castable Refractory.. It will work but is more expensive than the dry mixes. One advantage is that it is pre-mixed to the right wetness. There are a lot of people that build forges with it and they go to temps at or above our rocket stoves. When used for kilns it is often mixed with grog, which is crushed firebrick. They claim that the grog allows for better expansion and thermal shock. If I remember correctly they use 10 - 15% grog.
martinm: any one here with info \ experience with heat (from a mass heater) distribution with ducts throughout two storey house ?
Sept 8, 2018 22:58:52 GMT -8
padica: Good morning, this is a wonderful subject, please someone can help me with the theme of double and triple combustion, how it is achieved, theory and design, thank you
Sept 15, 2018 7:13:40 GMT -8
wiscojames: I'm afraid you won't get a response to such a vague question - I suggest reading through some of the threads related to your questions before asking for an explanation. People will be very generous with their knowledge if your question is more specific.
Sept 18, 2018 4:48:00 GMT -8
daniel: in my experience as I am working now on something of that nature, I have thought of making a heat exchanger and distributing the heat through vents using a slower fan. Now after a few years I realize that mass heaters give out primarily radiant heat, for
Nov 30, 2018 12:48:38 GMT -8
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place...
Dec 16, 2018 18:10:49 GMT -8
vesuvius: High Temperature Glass options,
Jan 4, 2019 16:28:17 GMT -8
vesuvius: Do any of you have experience with using the glass from home oven doors on a rocket stove? I'd like to have a viewing port on my stove but don't want to fork out for new ceramic glass. Any thought as to whether it would take the heat of a rocket stove?
Jan 4, 2019 16:30:40 GMT -8
yaya: you dont need the blowair for that temp..
Jan 13, 2019 16:43:57 GMT -8
flybywire: Glass window from an old washing machine is designed to take high temps. Cheap solution to your need.
Jan 27, 2019 0:10:58 GMT -8
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place to have a discussion... it is for short announcements
Feb 7, 2019 0:11:23 GMT -8
coastalrocketeer: you won’t likely get replies to questions here, and it is not a spot that makes holding an ongoing discussion possible...
Feb 7, 2019 0:12:22 GMT -8
TexasGonzo: Sooooo glad I found this site! Its always rewarding to find such a super group of folks! To any and all, feel free to PM me anytime. Thanks for having me!
Mar 11, 2019 18:56:41 GMT -8
jlmtech: GADGET: CONSIDER USING A JET PUMP INSTEAD OF A BLOWER FAN TO INDUCE DRAFT; NO CLOGGING.
Mar 26, 2019 8:19:28 GMT -8
michaelegan: i am unable to open the sketchup files on my mac. I used sketchup a few years back but apparently the company now requires a subscription. does anyone have any advice/instructions on how to use the program or how to view pictures without spending money?
Aug 20, 2019 18:41:48 GMT -8
mannytheseacow: michaelegan: download AutoCAD student version for free... import .SKP
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topbaza: hi everyone, been searching all over net and this is were i need to be i think!!
Sept 28, 2019 6:16:25 GMT -8
anounaki: Hi, why I cant upload photos when I make new tread to this forum?
Feb 28, 2020 2:09:40 GMT -8
ahansen: photos under 1 mb not possible?
Jun 4, 2020 0:09:21 GMT -8