The chemical properties of the ceramic fiber module are relatively stable on the whole, and have good resistance to acid and alkali corrosion. However, the ceramic fiber module is not suitable for use in the furnace atmosphere of the following substances.
1Fluorine and fluoride
Fluorine is the most corrosive to ceramic fibers, and it reacts with all aluminum silicate materials, including mullite fibers.
2Vanadium and other heavy metals
V2O5 is produced when vanadium and other heavy metals in low-quality fuel burn. It melts into liquid at about 690 degrees, adsorbs on the pores of the fiber, and forms a hard shell on the surface of the fiber lining, which will corrode layer by layer after falling off.
3 sulfur and sulfuric acid
Although sulfuric acid does not react with ceramic fibers, it corrodes metal anchors seriously. In some cases, it even "dissolves" the anchors and furnace shell.
4 alkali metals
Long-term application in an alkaline environment will cause shrinkage and damage of the fiber lining, and will continue to corrode the bottom layer after the surface layer falls off.
5 sulfuric acid
Experiments have shown that when used in an environment above 540°C for a long time, the fiber will shrink significantly.
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