Cavpilot2k Posted November 30, 2024 Share Posted November 30, 2024 I recently got a great deal on a bundle of these IFBs (38 of them for $40). They are not like the lightweight white IFBs I am used to. They are much more like regular hard (non-insulating) fire bricks, but they are clearly marked IFB. They measure 2.5”x4.5”x9 and I did not weigh them, but they weigh about as much as a brick should - not lightweight like the white ones. Can someone help me identify what type of brick (high alumina?) and maybe a max temp associated with the type? TIA Bonus question: there are two in the bunch that are slightly smaller and are marked EJB. Identification on those? Quote Link to comment Share on other sites More sharing options...
BillyBones Posted November 30, 2024 Share Posted November 30, 2024 EJB. Those are my initials. Please return ASAP. Quote Link to comment Share on other sites More sharing options...
Frosty Posted November 30, 2024 Share Posted November 30, 2024 Do a web search for, "IFB Refractories." They do make "insulating fire brick" of all types and it is in fact the company name. They've been around since 1919. The above is probably why most refractory makers call their insulating brick, "Light Insulating Fire Brick" or similar or other name that doesn't infringe on patent and copyright laws. Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
Cavpilot2k Posted December 2, 2024 Author Share Posted December 2, 2024 (edited) Great tip, I looked them up - thanks! Do you know if there is any way to tell exactly which model of brick I have though, so I know what their temp limits are? Edited December 2, 2024 by Mod30 Remove @name tag Quote Link to comment Share on other sites More sharing options...
Frosty Posted December 2, 2024 Share Posted December 2, 2024 Please don't use the @ tag with names it messes up the forum OS. It isn't a chat type system. You'd have to talk to the company to see if there is a way to ID what you have. I'd just test to see how much heat they can take, an Oxy Acet torch will get way hotter than you or I will likely ever need. You can call a ceramic or kiln supply and see what temperature cones are available and test with them. Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
Cavpilot2k Posted December 2, 2024 Author Share Posted December 2, 2024 Cool, thanks. And appreciate the tip in the @ Quote Link to comment Share on other sites More sharing options...
Frosty Posted December 3, 2024 Share Posted December 3, 2024 You're welcome, it can be hard to remember site rules, especially if you're using a cell app. Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
Scott NC Posted December 4, 2024 Share Posted December 4, 2024 I'll try for the bonus question concerning the EJB bricks. I found this: https://www.daves-brick-collection.com/2023/05/brick0311-ejb-union-mining-company.html?m=0 Which led me to this: http://www.mountsavagehistoricalsociety.org/brick yard/history of union mining company.htm I couldn't find specifications. Some history and identification if nothing else. Like rust, technology never sleeps: https://news.mit.edu/2024/electrified-thermal-decarbonizes-heavy-industry-with-thermal-batteries-1126 Quote Link to comment Share on other sites More sharing options...
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