Foxden Posted August 20, 2014 Report Share Posted August 20, 2014 I have a bunch if firebricks, k-23 and k-26 that I stored outside for a few years. They are in prefect condition but many are covered with algae and mold from exposure to the elements. I was thinking I could just load them in an electric kiln, preheat to dry them and fire them to around 700 degrees to burn off the organic material. Is there a better way? Link to comment Share on other sites More sharing options...
Mark C. Posted August 21, 2014 Report Share Posted August 21, 2014 Since you let them get wet-most likely they still are wet. You better go real slow heating them up to 212 degrees where steam forms.This needs to be a slow fire. Soft brick do not do well getting wet-hopefully they did not freeze? After firing you may still have to brush them. Mark Link to comment Share on other sites More sharing options...
Foxden Posted August 21, 2014 Author Report Share Posted August 21, 2014 They definitely didn't freeze. I'm in Florida. I'll treat them like damp greenware. Do you think 700 is high enough? I know things burn at 451, but don't want to have do do it twice. Also, how tightly do you think I can pack them in? Link to comment Share on other sites More sharing options...
Guest JBaymore Posted August 21, 2014 Report Share Posted August 21, 2014 Don't pack too tight.... they will have significant thermal lag....... since they are designed to be insulators. Stak in an open pattern to get the faces hot..... and burn off the junk. I'd go toe 1000-1100 F. best, ..................john Link to comment Share on other sites More sharing options...
Biglou13 Posted August 21, 2014 Report Share Posted August 21, 2014 foxden i can take them off your hands if you dont want to clean them........ i'd candle them 180 ish overnight, id even go to 210F for a few hours think loosely packed kiln, with minimal brick overlap Link to comment Share on other sites More sharing options...
Foxden Posted August 21, 2014 Author Report Share Posted August 21, 2014 I'll take this advice. Only the top ones on the stacks are bad. Obviously they have strong insulating properties so I will pack loosely and take time before going above 212. I might as well take it to 1000 or so, too. Thanks for the guidance. Link to comment Share on other sites More sharing options...
oldlady Posted August 22, 2014 Report Share Posted August 22, 2014 why not just pour bleach on them and use a brush? wear white. Link to comment Share on other sites More sharing options...
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