What to line metal foundry/furnace with?
Sep 23, 2016· industrial furnace supply house sell bags a castable refractory. this mixes like concrete and sets over night. it has temperature rating the highest temperature rating material is heavier tougher but not as good a insulator. they sell stuff rated for 2300F that has ceramic fiber insulation mixed in. lighter, not as tough but better insulator to the point it might need 1/2 the fuel.