So I've been researching all the different designs of coal burners and came across some forge info where some people are making graphite crucibles for their backyard forges.
I'm wondering how it might hold up as a firebrick liner, has anyone ever tried this? I know its brittle and all, but I'm sick of replacing bricks non stop cause the anthracite is breaking the clay/ceramic ones like a mofo.
But at the same time as I look into it it's also being called the highest grade of coal, which makes sense as its almost pure carbon. I'm thinking it will be ignited when burning anthracite, but at the same time if its holding up to forge temps, maybe its far beyond any temperature flash points we can reach when burning at full capabilities in a furnace.
I'm going to test this I have some graphite blocks laying around I used to use in an EDM machine that has been broken for 20 some odd years now. even if I can use it as a secondary layer on the outermost sides it might be worth it. I'll try throwing some small pieces in on top of a raging coal fire tomorrow and see if it burns or does anything of interest and post the results.
In the production of iron, graphite blocks are used to form part of the lining of the blast furnace. Its structural strength at temperature, thermal shock resistance, high thermal conductivity, low thermal expansion and good chemical resistance are of paramount importance in this application.